TidBITS#1121/09-Apr-2012
========================
  Issue link: <http://tidbits.com/issue/1121>


  In the news this week, we report on Dropbox doubling their referral
  bonuses — even retroactively! — and the notable release of FileMaker
  12. Also, Adam looks in depth at the fast-moving Flashback malware,
  which has reportedly infected 600,000 Mac users, and he describes how
  to determine if you’re infected and how to avoid falling prey to
  Flashback. Continuing on the security kick, Rich Mogull explains just
  how the security of cloud-based services works and how you can tell if
  employees of your cloud provider can read your data. Notable software
  releases this week include TinkerTool 4.8, Hazel 3.0.4, SpamSieve 2.9,
  and App Tamer 1.2.1.

Articles
    Dropbox Referral Bonuses Doubled to 500 MB, Retroactively
    FileMaker 12 Adds Power, Clarity, and Free iOS Apps
    How to Detect and Protect Against Updated Flashback Malware
    How to Tell If Your Cloud Provider Can Read Your Data
    TidBITS Watchlist: Notable Software Updates for 9 April 2012
    ExtraBITS for 9 April 2012


------------ This issue of TidBITS sponsored in part by: --------------

* READERS LIKE YOU! Support TidBITS by becoming a member today! 
  Check out the perks at <http://tidbits.com/member_benefits.html> 
  Special thanks this week to Guy Plunkett III, Marvin Cross, 
  John Harris, and Bill Russo for their generous support!

* BBEdit 10 from Bare Bones Software — All the editing power you 
  need, with more than one hundred new features! The leading 
  professional HTML and text editor for the Mac keeps getting better! 
  Download the demo and see for yourself! <http://barebones.com/>

* Dragon speech recognition software for Macintosh, iPhone, and iPad! 
  Get the all-new Dragon Dictate for Mac from Nuance Communications 
  and experience Simply Smarter Speech Recognition. 
  Learn more about Dragon Dictate: <http://nuance.com/dragon/mac>

* CrashPlan is easy, secure backup that works everywhere. Back up 
  to your own drives, computers, and online with unlimited storage. 
  With unlimited online backup, this is one resolution you can keep. 
  Back Up Your Life Today! <http://crashplan.com/ref/tidbits.html>

* New from Smile: PDFpen for iPad. Sign contracts, make changes, fill 
  out applications and more. With iCloud storage, you get seamless 
  PDF editing on your Mac and iPad. Take control of your PDFs 
  wherever you are. Get it on the App Store: <http://smle.us/tbpdfpen>

* Intego: Washing Machine cleans up files created by Web browsers 
  and other programs that access the Internet. Get rid of caches, 
  cookies, download histories, browsing histories and more. 
  Download a free trial. <http://www.intego.com/wmtb>

* Noteboom Video Tutorials for Apple Software: Learn how to use 
  iMovie, iPhoto, Lion, Bento, and more with our highly rated 
  video tutorials available on the Mac App Store and the App Store 
  on your iPad. <http://www.noteboomproductions.com/tb>

* Spending too much time editing videos on your iPhone? 
  Then you may be doing it wrong! Get Game Your Video for your 
  iPhone and transform your videos with just a couple of taps. 
  Get Game Your Video today! <http://bit.ly/gameyourvideo>

* Scan anywhere with Doxie, the scanner for your Mac. Doxie scans 
  paper, photos, and receipts anywhere — no computer required. 
  And Doxie’s great Mac software organizes, creates searchable PDFs, 
  sends to the cloud, and more. <http://www.getdoxie.com/a/bits>

* Discover Fujitsu ScanSnap Scanners — Featuring state-of-the-art 
  scanning solutions for companies of any size. Make your life more 
  productive, mobile, paperless, and efficient with a ScanSnap 
  scanner. To learn more, visit: <http://www.ez.com/sstb>

---------- Help support TidBITS by supporting our sponsors ------------


Dropbox Referral Bonuses Doubled to 500 MB, Retroactively
---------------------------------------------------------
  by Adam C. Engst <ace@tidbits.com>
  article link: <http://tidbits.com/e/12914>
  3 comments

  For every friend that you invite to join Dropbox, the cloud-based 
  storage and file sharing service has long awarded both you and your 
  friend 250 MB of free storage space. It’s a great technique for 
  encouraging people to sign up with the service, and Dropbox just 
  sweetened the deal by doubling the bonus space award to 500 MB. 
  (Educational Dropbox accounts were already receiving 500 MB referral 
  bonuses, and it appears they remain at that level.)

<http://blog.dropbox.com/?p=1096>

  Even better, and this is a truly classy move, Dropbox has applied 
  the doubling retroactively to all your previous referrals. As a 
  result, my account, already at 13.25 GB (2 GB base amount, plus 250 
  MB from being referred to Dropbox by someone else initially, plus 8 
  GB of 250 MB referrals, plus 3 GB from the Camera Upload beta test; 
  see “Get More Storage for Testing Dropbox Camera Uploads,” 29 
  March 2012) has now jumped to 21.25 GB thanks to the 8 GB of 
  referrals being doubled to 16 GB. Speaking of which, 16 GB is the 
  maximum a free Dropbox Basic account can gain from referrals; paid 
  Dropbox Pro accounts earn 1 GB per referral and can get up to a 
  maximum of 32 GB.

<http://tidbits.com/article/12898>

  So if you were previously on the edge of filling up your Dropbox 
  account, you may have just received some additional breathing room. 
  To see how much space you have, you can just look in the Dropbox 
  menu, where it will tell you what percentage of your overall space 
  is used. If you check your Account Info page, you can see how your 
  storage breaks down between your files and files shared with you.

<http://tidbits.com/resources/2012-04/Dropbox-menu.png>
<https://www.dropbox.com/account>


  ----
  read/post comments: <http://tidbits.com/e/12914#comments>
  tweet this article: <http://tidbits.com/t/12914>


FileMaker 12 Adds Power, Clarity, and Free iOS Apps
---------------------------------------------------
  by Mark H. Anbinder <mha@tidbits.com>
  article link: <http://tidbits.com/e/12912>
  3 comments

  With the release of the FileMaker 12 suite of software, FileMaker, 
  Inc. is reinvigorating its venerable database platform with robust 
  new versions of Mac and Windows applications, 64-bit server 
  software, and updated iOS apps, now free to download. The new 
  versions are available immediately.

<http://www.filemaker.com/products/filemaker.html>

  The company has clearly invested considerable effort in developing 
  comprehensive design tools that will enable users to implement clean 
  database interfaces without needing much in the way of design 
  skills. FileMaker Pro 12 offers an expanded and improved collection 
  of “starter solution” database templates users can adopt as is 
  or customize as needed, and 40 different themes to provide a rich 
  and professional-looking visual impression with little additional 
  time or energy on the database designer’s part. Many of the themes 
  offer layouts designed specially for use on an iPhone or iPad.

  FileMaker Pro 12 is available for both Mac OS X and Windows for 
  $299, with a $179 upgrade price, and FileMaker Pro 12 Advanced is 
  available for $499, with a $299 upgrade price. FileMaker Server and 
  FileMaker Server Advanced cost $999 and $2,999 respectively, with 
  upgrades priced at $599 and $1,799. Upgrade pricing is available to 
  owners of FileMaker Pro or Server 9, 10, or 11. Owners of FileMaker 
  Pro/Server 8 or earlier versions will need to purchase the full 
  product, and FileMaker Pro/Server 9 users are eligible for upgrade 
  pricing only through 27 September 2012.


**In the Palm of Your Hand** -- We’re not surprised to hear from the 
  FileMaker folks that iPhone, iPod touch, and iPad access to 
  FileMaker Pro databases has become a big deal since the release of 
  the FileMaker Go applications (see Steve McCabe’s “FileMaker Go 
  Brings FileMaker Databases to iOS,” 9 February 2012). These iOS 
  apps, geared toward portable access to databases developed on the 
  desktop, become free with the release of FileMaker Go 12. New 
  versions are available now in the App Store. (The paid versions of 
  FileMaker Go 11 will remain available in the App Store for those who 
  want to continue working with FileMaker Pro 11 or FileMaker Server 
  11.)

<http://tidbits.com/article/12725>

  In line with one of Steve McCabe’s criticisms, FileMaker Go 11 
  users, especially on the smaller iPhone screen, often found 
  themselves pinching and swiping quite a bit to zoom and pan around 
  layouts designed for use on a laptop or larger desktop screen. For 
  version 12, FileMaker has done that extra work for us; the provided 
  themes, which can be applied even to existing databases with a 
  couple of clicks, not only turn jumbled rows of fields into tidy 
  layouts for the bigger screens, they also seamlessly deliver 
  handheld-sized and tablet-optimized screens — complete with the 
  bigger spaces and controls that come in handy when you’re 
  interacting with a form using your finger, and not a mouse or 
  trackpad.

  At the same time, FileMaker has added a richer array of iOS-specific 
  features to the FileMaker Go apps. Database developers can take 
  advantage of iOS location capabilities if allowed by the user, users 
  can record audio and video directly into a database with multimedia 
  fields, and multimedia playback supports AirPlay streaming to 
  devices like the Apple TV. 

  We’re pleased to see the company has also addressed one of our 
  longstanding frustrations with FileMaker Go. Better wide-area 
  networking support in the software at both ends means iOS users can 
  now access databases that are being served just about anywhere. 
  Earlier versions of FileMaker’s iPhone and iPad apps could only 
  open databases hosted on the same local network, or while using a 
  VPN connection to a remote network.

  FileMaker’s layout features have been changed to reflect spacing 
  and sizing based on points rather than pixels, important in a Retina 
  display world where pixel size can vary enormously from device to 
  device. (The company says the apps don’t automatically deliver 
  different graphics optimized for the Retina display in current 
  iPhone and iPad models, but the resolution independence will allow 
  that in the future. In the meantime, text and certain other visual 
  elements drawn by the apps will take advantage of the Retina 
  display.) The iOS apps now even have their own capability to export 
  data into Excel, CSV, and tab-delimited text files, which can be 
  emailed directly.

  While the FileMaker Go 12 apps are available at no charge, the 
  average user won’t find them useful in a vacuum; databases 
  accessed via the apps must be created or hosted by FileMaker Pro 12 
  or FileMaker Server 12.


**On the Desktop** -- The core desktop version of FileMaker Pro 
  hasn’t changed too radically, though there are some nice 
  additions. When working with media, users can now drag images, video 
  files, or documents such as PDFs to the corresponding container 
  field in the database window, rather than having to go through the 
  multiple clicks of selecting the field, navigating around the file 
  selection dialog box, then selecting and attaching or uploading the 
  file. Media incorporated by users in local databases can be stored 
  within the database file or linked to the original on the user’s 
  hard drive.

  FileMaker Pro 11 introduced some basic charting capabilities, and 
  the company says the feature proved so popular that in FileMaker Pro 
  12 they’ve added a Quick Charts tool and several new types of 
  charts, including bubble, scatter, and stacked bar or column charts. 


**Power to Spare** -- At the far end of the FileMaker spectrum, the 
  company has revamped its FileMaker Server and FileMaker Server 
  Advanced products to run in 64-bit mode. The company says the 
  resulting access to additional memory can boost performance for 
  large databases. At the same time, FileMaker 12 sports a 
  re-architected Web publishing engine that provides better 
  performance when delivering FileMaker data embedded within Web pages 
  or to users accessing the databases directly via a Web browser.

  FileMaker 12 Server and Server Advanced also gain the capability to 
  serve streaming multimedia to database users. Image, audio, and 
  video files can be centrally managed and encrypted, and the content 
  delivered as needed over the available network connection.


**Taking the Plunge** -- We’re more impressed with the progress and 
  improvements we see in this latest FileMaker incarnation than we 
  have been for a few releases, and we think most serious FileMaker 
  users, especially those using the accompanying iPhone and iPad apps, 
  will want to upgrade. It is important to note that FileMaker 11 and 
  FileMaker 12 databases aren’t cross-version compatible, so 
  organizations will need to upgrade all at once, from the handheld to 
  the desktop to the server.


  ----
  read/post comments: <http://tidbits.com/e/12912#comments>
  tweet this article: <http://tidbits.com/t/12912>


How to Detect and Protect Against Updated Flashback Malware
-----------------------------------------------------------
  by Adam C. Engst <ace@tidbits.com>
  article link: <http://tidbits.com/e/12918>
  25 comments

  Apple has released updates to its Java libraries for users of Mac OS 
  X 10.7 Lion and 10.6 Snow Leopard (see “Java for OS X Lion 
  2012-001 and Java for Mac OS X 10.6 Update 7,” 3 April 2012). The 
  updates bring the Java runtime engine up to version 1.6.0_31 and fix 
  multiple vulnerabilities in Java version 1.6.0_29, “the most 
  serious of which may allow an untrusted Java applet to execute 
  arbitrary code outside the Java sandbox.” What those release notes 
  aren’t saying is that the vulnerabilities in question were being 
  exploited in the wild by a new variant of the Flashback malware (see 
  “Beware the Morphing Flashback Malware,” 27 February 2012).

<http://tidbits.com/article/12911>
<http://support.apple.com/kb/HT5228>
<http://tidbits.com/article/12818>


**Significant Infection Rates** -- A Russian antivirus developer, 
  Doctor Web, says their research shows more than 550,000 Macs have 
  been infected after users visited compromised Web sites that contain 
  JavaScript code to activate a malicious Java applet. Sorokin Ivan of 
  Doctor Web later raised that estimate to over 600,000 in a tweet.

<http://www.drweb.com/>
<http://news.drweb.com/show/?i=2341&lng=en&c=14>
<https://twitter.com/#!/hexminer/status/187623741273026562>

  Although we haven’t seen anything from Doctor Web before, the 
  question of who they are came up on TidBITS Talk, where security 
  analyst Brian McNett said:
      
      The first I heard of Doctor Web was when they were 
      referenced, and when Sorokin Ivan later responded via Twitter 
      to Mikko Hypponen, Chief Research Officer of F-Secure. I know 
      and trust Mikko. He uses reliable sources. Doctor Web appears 
      to be a Russian outfit, with largely Russian clientele, so it 
      wouldn’t be unusual for their reputation to be unknown 
      elsewhere. Their key discovery is that Flashback uses the MAC 
      address of the infected machine as the User-Agent when 
      connecting to its command-and-control server. This is a unique 
      pattern that allowed them to track infections before anyone 
      else. That they shared this finding publicly, along with their 
      data, adds to their credibility.

  Mikko Hypponen said in a tweet that F-Secure has spoken with Doctor 
  Web and that the infection numbers look real. And Kaspersky Labs has 
  now provided independent confirmation that Doctor Web’s numbers 
  are reasonable and are in fact Macs.

<https://twitter.com/#!/mikko/status/187898394835025920>
<http://www.securelist.com/en/blog/208193441/Flashfake_Mac_OS_X_botnet_confirmed>

  According to Mac security firm Intego, Flashback-infected Macs show 
  no symptoms at all, other than communication with Flashback’s 
  command-and-control servers that could be detected by network 
  monitoring tools. Although we haven’t seen confirmation of this 
  with recent Flashback variants, earlier versions of Flashback tried 
  to capture user names and passwords by injecting code into Web 
  browsers and other network applications, like Skype. In such cases, 
  the affected programs tended to crash frequently. Security firm 
  Sophos says that along with stealing passwords, Flashback can also 
  poison search engine results to perform advertising fraud (by 
  fraudulently increasing click-through rate) or to direct victims to 
  further malicious content (though that seems unnecessary, if the Mac 
  is already compromised).

<http://nakedsecurity.sophos.com/2012/04/05/mac-botnets-gaining-traction-using-drive-by-java-exploit/>

  More concerning is that Intego says it has seen dozens of variants 
  of Flashback in the past weeks, indicating that the programmers 
  behind Flashback are modifying it quickly to avoid detection and to 
  take advantage of newfound vulnerabilities. That may render obsolete 
  any advice for preventing, detecting, and removing Flashback. On a 
  side note, Intego also says that it has evidence that Flashback was 
  created by the same people who created MacDefender in 2011 (see 
  “Beware Fake MACDefender Antivirus Software ,” 2 May 2011 and 
  “Apple Responds to Increasingly Serious MacDefender Situation,” 
  25 May 2011).

<http://www.intego.com/mac-security-blog/hundreds-of-thousands-of-macs-infected-by-flashback-malware/>
<http://www.intego.com/mac-security-blog/new-flashback-variant-changes-tack-to-infect-macs/>
<http://tidbits.com/article/12149>
<http://tidbits.com/article/12199>


**Detect Flashback Infection** -- So how can you tell if you’re 
  infected? Security firm F-Secure posted instructions for detecting 
  current Flashback infections; the instructions also include removal 
  steps that we would dissuade anyone but advanced users from 
  attempting. 

<http://www.f-secure.com/v-descs/trojan-downloader_osx_flashback_i.shtml>

  That said, detection comes down to issuing the following defaults 
  read commands in Terminal (F-Secure suggests only the first and 
  last; the others extend the technique from Safari to Google Chrome, 
  Firefox, and iCab). In each case, if you see “does not exist” at 
  the end of the response from each command, you are _not_ infected. 
  (The defaults read command is entirely safe — it’s just 
  attempting to determine whether some data exists in the Info.plist 
  file within each application package.)

      defaults read /Applications/Safari.app/Contents/Info LSEnvironment
      defaults read /Applications/Google\ Chrome.app/Contents/Info LSEnvironment
      defaults read /Applications/Firefox.app/Contents/Info LSEnvironment
      defaults read /Applications/iCab\ 4/iCab.app/Contents/Info LSEnvironment
      defaults read ~/.MacOSX/environment DYLD_INSERT_LIBRARIES

  For a simpler approach, Marc Zeedar, publisher of Real Studio 
  Developer magazine, has written a simple Test4Flashback application 
  that encapsulates the defaults read checks and presents a dialog 
  telling you whether or not you’re infected. It doesn’t attempt 
  to do any removal at all.

<http://www.rsdeveloper.com/>
<http://rsdeveloper.com/downloads/test4flashback.zip>


**Protect Yourself Against Flashback** -- In the meantime, if you are 
  using 10.7 Lion and have not yet installed Java, hold off unless you 
  need it. If you have installed Java in Lion or are using 10.6 Snow 
  Leopard, immediately install Apple’s Java updates via Software 
  Update to prevent infection from this particular variant of 
  Flashback. And although uninstalling Java is difficult, you can 
  disable it, either system-wide or in individual Web browsers 
  (Flashback relies entirely on Web-based attacks, as far as we’re 
  aware).

<http://reviews.cnet.com/8301-13727_7-57408841-263/how-to-check-for-and-disable-java-in-os-x/>

* To disable Java entirely on your Mac, open the Java Preferences 
  utility in /Applications/Utilities and uncheck the checkboxes. 
  Don’t do this if you use CrashPlan or any other Java-based 
  software, including some Adobe applications!

<http://tidbits.com/resources/2012-04/MacOSX-disable-Java.png>

* To disable Java in Safari, choose Safari > Preferences, and turn off 
  Java in the Security pane.

<http://tidbits.com/resources/2012-04/Safari-disable-Java.png>

* To turn off Java in Google Chrome, type about:plugins in the address 
  bar, scroll down, and click the Disable link for Java Plug-In 2 for 
  NPAPI Browsers.

<http://tidbits.com/resources/2012-04/Chrome-disable-Java.png>

* To turn off Java in Firefox, choose Tools > Add-ons, click the 
  Plugins tab, and disable the Java Plug-In 2 for NPAPI Browsers.

<http://tidbits.com/resources/2012-04/Firefox-disable-Java.png>

  If you need to use Java only occasionally, consider leaving it 
  enabled in a browser that you seldom use, and rely on that browser 
  for those specific sites — like Web conferencing tools — that 
  require Java.

  Installing antivirus software like Intego’s VirusBarrier will also 
  provide protection, both from the software’s base functionality 
  and because the Flashback malware doesn’t install itself if it 
  detects certain antivirus programs.

<http://www.intego.com/virusbarrier>

  Lastly, it’s worth noting that some variants of Flashback worm 
  their way onto Macs not through exploiting Java vulnerabilities, but 
  by fooling users into entering an administrator password. The only 
  way you can protect yourself against such trickery is by being 
  suspicious of any password request that doesn’t come in direct 
  response to an action that you’ve just taken, such as installing a 
  new piece of software that you downloaded intentionally.

  Be careful out there. 


  ----
  read/post comments: <http://tidbits.com/e/12918#comments>
  tweet this article: <http://tidbits.com/t/12918>


How to Tell If Your Cloud Provider Can Read Your Data
-----------------------------------------------------
  by Rich Mogull <rich@tidbits.com>
  article link: <http://tidbits.com/e/12920>
  2 comments

  With the tremendous popularity of services like Dropbox and iCloud 
  there is, rightfully, an incredible amount of interest in cloud data 
  security. Once we start hosting our most sensitive data with cloud 
  services (or any third-party provider) it’s only natural to wonder 
  how secure our data is when it’s in the hands of others. But 
  sometimes it’s hard to figure out exactly _who_ can look at our 
  information, especially since buzzwords like “secure” and 
  “encrypted” don’t necessarily mean _you_ are the only one who 
  can see your data.


**How Cloud Providers Protect Your Data** -- In part because there are 
  numerous ways cloud providers could protect your data, the actual 
  implementation varies from service to service. All consumer cloud 
  services are what we in the cloud world call _public_ and are built 
  for _multi-tenancy_. 

  A public cloud service is one that anyone on the Internet can access 
  and use. To support this the cloud providers need to _segregate_ and 
  _isolate_ customers from each other. Segregation means your data is 
  stored in your own little virtual area of the service, and isolation 
  means that the services use security techniques to keep people from 
  seeing each other’s stuff.

  Practically speaking, multi-tenancy means your data is co-mingled 
  with everyone else’s on the back end. For example, with a calendar 
  service your events exist in the same database as all the other 
  users’ events, and the calendar’s code makes sure your 
  appointment never pops up on someone else’s screen. File storage 
  services do the same thing: intermingling everyone’s files and 
  then keeping track of who owns what in the service’s database. 
  Some, like Dropbox, will even store only a single version of a given 
  file and merely point at it from different owners. Thus multiple 
  users who happen to have the same file are technically sharing that 
  single instance; this approach also helps reduce the storage needed 
  for multiple versions of a file for a single user.

  Although multi-tenancy means co-mingling data, the cloud provider 
  uses segregation techniques so you see only your own data when you 
  use the service, and isolation to make sure you can’t maliciously 
  go after someone else’s data when you’re using the system.

  The cloud provider’s databases and application code are key to 
  keeping all these bits separate from each other. It isn’t like 
  having a single hard drive, or even a single database, dedicated to 
  your information. That simply isn’t efficient or cost-effective 
  enough for these services to keep running. So multi-tenancy is used 
  for files, email, calendar entries, photos, and every other kind of 
  data you store with a cloud service. 

  Not all services work this way, but the vast majority do.


**Encryption to the Rescue?** -- A multi-tenancy architecture has two 
  obvious problems. The first is that if there’s a mistake in the 
  application or database the service runs on, someone else might see 
  your data. We’ve seen this happen accidentally; for example, last 
  year Dropbox accidentally allowed any user access to any other 
  user’s account. There is a long history of Internet sites (cloud 
  and otherwise) inadvertently allowing someone to manipulate a Web 
  page or URL to access unauthorized data, and the bad guys are always 
  on the lookout for such vulnerabilities.

<http://www.wired.com/threatlevel/2011/06/dropbox/>

  The second problem, which has been in the press a lot lately, is 
  that the cloud provider’s employees can also see your data. Yes, 
  the better services usually put a lot of policy and security 
  controls in place to prevent this, but it’s always technically 
  possible. 

  One way to mitigate some of these concerns is with encryption, which 
  uses a mathematical process coupled with a digital key (a long 
  string of text) to turn your data into what looks like random 
  gibberish. That key is necessary to decrypt and read the data.

  Most cloud providers use encryption to protect your Internet 
  connection to them (via SSL/TLS — look for https URLs) so no one 
  can sniff it on the network. (Unfortunately, some large email 
  providers still don’t always encrypt your connection.) Most of the 
  time when you see “encryption” in a list of security features, 
  this is what they mean. But encrypting data in transit is only half 
  the battle — what about your data in the provider’s data center? 
  Encryption of storage is also necessary for any hope of keeping your 
  data secret from the cloud provider’s employees.

  Some providers do encrypt your data in their data center. There are 
  three ways to do this:

1. Encrypt all the data for all users using a single key (or set of 
   keys) that the cloud provider knows and manages.

2. Encrypt each individual user’s data with a per-user key that the 
   _cloud provider_ manages.

3. Encrypt each individual user’s data with a per-user key that the 
   _user_ manages.

  By far, most cloud services (if they encrypt at all) use Option
  #1 — keys that they manage and that are shared among users — 
  because it’s the easiest to set up and manage. The bad news is 
  that it doesn’t provide much security. The cloud provider can 
  still read all your data, and if an attacker compromises the 
  service’s Web application, he can usually also read the data 
  (since it’s decrypted before it hits the Web server). 

  Why do this level of encryption at all? It’s mostly to protect 
  data if a hard drive is lost or stolen. This isn’t the biggest 
  concern in the world, since cloud providers have vast numbers of 
  drives, and it would be nearly impossible to target a particular 
  user’s data, if the data could be read at all without special 
  software. It also means that providers get to say they “encrypt 
  your data” in their marketing. This is how Dropbox encrypts your 
  data.

  Option #2 is a bit more secure. Encrypting every user’s data with 
  an individual key reduces, in some cases, the chance that one user 
  (or an attacker) can get to another’s data. It all depends on 
  where the attacker breaks into the system, and still relies on good 
  programming to make sure the application doesn’t connect the wrong 
  keys to the wrong user. It’s hard to know how many services use 
  this approach, but when done properly it can be quite effective. The 
  major weakness is that the cloud provider’s employees can still 
  read your data, since they have access to the keys.

  Option #3 provides the best security. You, the user, are the only 
  one with the keys to your data. Your cloud provider can never peek 
  into your information. The problem? This breaks... nearly 
  everything. First of all it means you are responsible for managing 
  the keys, and if you lose them you lose access to your data. 
  Forever. Also, it is extremely difficult — if not impossible — 
  to allow you to see or work with your data in a Web page since the 
  Web server can’t read your data either. Thus it works for some 
  kinds of services (mostly file storage/sharing) and not others, and 
  _only_ for sophisticated users who are able to manage their own 
  keys.

  As is so often the case, these options reveal the tradeoff between 
  security and convenience.


**How to Tell if Your Cloud Provider Can Read Your Data** -- In two of 
  the three options I listed above, the provider can read your data, 
  but how can you tell for yourself if this is the case?

  There are three different (but similar) indications that your cloud 
  data is accessible to your provider:

* If you can see your data in a Web browser after entering only your 
  account password, the odds are extremely high that your provider can 
  read it as well. The only way you could see your data in a Web 
  browser and still have it be hidden from your provider is if the 
  service relied on complex JavaScript code or a Flash/Java/ActiveX 
  control to decrypt and display the data locally.

* If the service offers both Web access and a desktop application, and 
  you can access your data in both with the same account password, 
  odds are high that your provider can read your data. This is because 
  your account password is also probably being used to protect your 
  data (usually your password is used to unlock your encryption key). 
  While your provider could technically architect things so the same 
  password is used in different ways to both encrypt data and allow 
  Web access, that really isn’t done.

* If you can access the cloud service via a new device or application 
  using your account user name and password, your provider can 
  probably read your data. This is just another variation of the item 
  above. 

  This is how I knew Dropbox could read my files long before that 
  story hit the press. Once I saw I could log in and see my files, or 
  view them on my iPad without using a password other than my account 
  password, I knew that my data is encrypted with a key that Dropbox 
  manages. The same goes for the enterprise-focused file sharing 
  service Box (even though it’s hard to tell when reading their 
  site). Of course, since Dropbox stores just files, you can apply 
  your own encryption before Dropbox ever sees your data, as I 
  explained last year at Securosis.

<https://securosis.com/blog/how-to-encrypt-your-dropbox-files-until-dropbox-wakes-the-f-up>

  And iCloud? With iCloud I have a single user name and password. It 
  offers a rich and well-designed Web interface where I can manage 
  individual email messages, calendar entries, and more. I can 
  register new devices and computers with the same user name and 
  password I use on the Web site. Thus, from the beginning, it was 
  clear Apple had the capability to read my content, just as Ars 
  Technica reported recently.

<http://arstechnica.com/apple/news/2012/04/apple-holds-the-master-key-when-it-comes-to-icloud-security-privacy.ars>

  That doesn’t mean Dropbox, iCloud, and similar services are 
  insecure. They generally have extensive controls — both technical 
  and policy restrictions — to keep employees from snooping. But it 
  does mean that such services aren’t suitable for all users in all 
  cases, especially businesses or governmental organizations that are 
  contractually or legally obligated to keep certain data private.


**Doing It Right** -- The backup service CrashPlan is an example of a 
  service that offers flexible encryption to fit different user needs, 
  with three separate options. (For more on choosing the appropriate 
  encryption method for CrashPlan, see Joe Kissell’s “Take Control 
  of CrashPlan Backups.”) 

<http://www.crashplan.com/>
<http://www.takecontrolbooks.com/crashplan?pt=TB1121>

  First, by default, your data is encrypted using a key protected by 
  your account password. This still isolates and protects it from 
  other users, while enabling you to view file information through the 
  CrashPlan Web site and the CrashPlan Mobile app. But CrashPlan’s 
  employees could still access your data.

  Second, if you want more security, you can add a separate backup 
  password that only you know. This approach still allows access 
  through the CrashPlan Web site and the CrashPlan Mobile app, but 
  CrashPlan employees can’t see your data except (maybe) during a 
  Web session after you enter your separate password. Attackers 
  can’t access your data either, though your password may be 
  susceptible to brute force cracking or social engineering.

  Third and finally, you can generate your own per-device encryption 
  keys, which CrashPlan never sees or knows about, rendering your 
  backups readable only by you (or anyone who can beat the key out of 
  you — never underestimate the power of a wrench — props to 
  xkcd!). You could technically use a different encryption key on each 
  device (or share, your choice) so that even if one system were to be 
  compromised, it wouldn’t allow access to backups from your other 
  devices. Clearly, this is much more difficult to manage and well 
  beyond the needs or capabilities of the average user (heck, even I 
  don’t use it).

<http://xkcd.com/538/>

  So if you want to be certain that your data is safe from both 
  attackers and the cloud provider’s employees snooping, look for 
  services that offer additional options for encrypting data, either 
  with a password or an encryption key known only to you. If such an 
  option isn’t available at the next cloud service you check out, 
  you’ll know that the provider’s employees could technically read 
  your data. And when the next big story of a cloud provider reading 
  data hits the headlines, you can smugly inform your friends that you 
  knew it all along. 


  ----
  read/post comments: <http://tidbits.com/e/12920#comments>
  tweet this article: <http://tidbits.com/t/12920>


TidBITS Watchlist: Notable Software Updates for 9 April 2012
------------------------------------------------------------
  by TidBITS Staff <editors@tidbits.com>
  article link: <http://tidbits.com/e/12922>

**TinkerTool 4.8** -- Marcel Bresink has released version 4.8 of 
  TinkerTool, his system utility that lets you adjust a variety of 
  settings under Mac OS X’s hood (covered previously by Matt 
  Neuburg; see “Lion Frustrations? Don’t Forget TinkerTool,” 29 
  October 2011). While TinkerTool can still be used with Mac OS X 10.6 
  Snow Leopard, this update focuses on adding new ways to control 
  system behavior in 10.7 Lion, including Launchpad and Mission 
  Control animations, the delay when moving between Spaces and Mission 
  Control, and the capability to open Dock Stacks by scrolling. You 
  can also add pop-up notifications to the Dock when playing a new 
  track in iTunes 10.4 or later, enable copy operations when 
  previewing text files in Quick Look, and configure a less-precise 
  edge to windows when grabbing to resize them. If you’re running a 
  Mac OS X version prior to 10.6 Snow Leopard, TinkerTool is available 
  in separate applications for use with those previous iterations 
  (TinkerTool Classic for 10.1 Puma, 10.2 Jaguar, and 10.3 Panther; 
  TinkerTool Classic Generation 2 for 10.4 Tiger and 10.5 Leopard). 
  (Free, 1.7 MB, release notes)

<http://www.bresink.com/osx/TinkerTool.html>
<http://tidbits.com/article/12601>
<http://www.bresink.com/osx/TinkerToolClassic.html>
<http://www.bresink.com/osx/TinkerToolClassicG2.html>
<http://www.bresink.com/osx/0TinkerTool/history.html>

  Read/post comments about TinkerTool 4.8.

<http://tidbits.com/article/12917#comments>


**Hazel 3.0.4** -- Noodlesoft continues to refine its file cleanup 
  utility with Hazel 3.0.4 after its recent update to version 3.0 (see 
  “Hazel 3.0.1,” 4 March 2012). This release modifies a number of 
  user interface behaviors, including the capability to click on 
  tokens to add them when editing patterns and display of a pause icon 
  for paused folders in the Run Rules submenu. It fixes a problem 
  where a deleted custom token wasn’t deleted from patterns using it 
  and a bug where multiple custom tokens were created with the same 
  name. The update also fixes incorrect formatting of custom tokens 
  with numbers, prevents Growl messages from converting slashes to 
  colons, prevents a crash when opening rules that used the old 
  keywords attribute, and fixes a bug using the copy action with the 
  Throw Away Duplicate Files option set. ($25 new, $10 upgrade, 5.0 
  MB, release notes)

<http://www.noodlesoft.com/hazel.php>
<http://tidbits.com/article/12832>
<http://www.noodlesoft.com/release_notes.php>

  Read/post comments about Hazel 3.0.4.

<http://tidbits.com/article/12916#comments>


**SpamSieve 2.9** -- C-Command Software has released SpamSieve 2.9 to 
  address a bevy of maintenance issues. This update improves the 
  spam-filtering software’s training regimen for “good” Exchange 
  messages in Apple Mail as well as handling of incoming messages in 
  Microsoft Outlook. The release adds support for Growl notifications 
  via GNTP and support for training messages as spam via the Herald 
  notification plug-in. Other changes include adding a new 
  auto-training parameter in the score script that can override the 
  setting in preferences on a case-by-case basis, modifying the 
  mailbox moving behavior of the Change Settings command in Apple 
  Mail, and adjusting drone AppleScripts for better troubleshooting. 
  SpamSieve is also now code-signed for compliance with OS X 10.8 
  Mountain Lion’s Gatekeeper security feature. The update is rounded 
  out by improvements in handling errors and fixes to other bugs. ($30 
  new, free update, 9.3 MB, release notes)

<http://c-command.com/spamsieve/>
<http://c-command.com/forums/showthread.php/3472-SpamSieve-2-9>

  Read/post comments about SpamSieve 2.9.

<http://tidbits.com/article/12915#comments>


**App Tamer 1.2.1** -- St. Clair Software has released App Tamer 1.2, 
  which gives some props to our own Adam Engst for the change to its 
  menu bar icon. The St. Clair Software blog writes that this update 
  to the CPU-monitoring utility started as a user request for a 
  colored menu bar icon, but it evolved after reading about Adam’s 
  account of an unseen CPU process draining the battery of his MacBook 
  (see “Solving iCloud-Related Slowdowns in Lion,” 16 February 
  2012). To better get your attention, App Tamer 1.2 now dynamically 
  colorizes its menu bar icon (turn it on in App Tamer’s 
  preferences), with the color getting brighter and more alarming 
  (moving from pale yellow to red) as your CPU usage climbs toward 100 
  percent. The menu bar icon also displays a speedometer-like needle 
  to reflect processor load, and you can choose to display the 
  percentage next to the icon. Version 1.2 also fixes an issue that 
  prevented viewing of all processes launching and quitting, and it 
  enables you to double-click App Tamer to open its window if the 
  application icon isn’t in the Dock. A quick 1.2.1 update solves a 
  problem when running under very high load and fixes the menu bar 
  icon in Mac OS X 10.5 Leopard. ($14.95 new, free update, 3.6 MB, 
  release notes)

<http://www.stclairsoft.com/AppTamer/>
<http://stclairsoft.com/blog/2012/03/27/app-tamer-1-2-whats-in-a-menubar-icon/>
<http://tidbits.com/article/12796>
<http://www.stclairsoft.com/AppTamer/release.html>

  Read/post comments about App Tamer 1.2.

<http://tidbits.com/article/12905#comments>




ExtraBITS for 9 April 2012
--------------------------
  by TidBITS Staff <editors@tidbits.com>
  article link: <http://tidbits.com/e/12925>

  Read on for a comprehensive look from Stephen Fry at how Apple’s 
  competitors have repeatedly dropped the ball since the release of 
  the iPhone, and a perspective-setting article from Nick Bilton of 
  the New York Times about how companies other than Apple that use 
  questionable Chinese labor to manufacture devices have been 
  suspiciously silent about the issue.


**Stephen Fry on What the iPhone’s Competitors Missed** -- Apple is 
  at the top of its game now, but that level of success isn’t 
  entirely attributable to its products. Multi-hyphenate Stephen Fry 
  has been carrying multiple cellular phones — and smartphones — 
  since long before 2007, and he writes about how the failures of 
  Apple’s competition since the introduction of the iPhone have 
  helped Apple reshape the market.

<http://www.stephenfry.com/2012/04/03/four-and-half-years-on/>

  Read/post comments

<http://tidbits.com/article/12924#comments>


**Too Much Silence on Working Conditions** -- Judging from most press 
  reports over the last couple of months, you’d think Apple has done 
  a horrible job of protecting the safety of the Chinese workers who 
  manufacture most of its devices. Foxconn, one of Apple’s largest 
  manufacturers, is actually a behemoth that builds cell phones, 
  computers, tablets, and other technology for most of the big 
  companies around the world. Nick Bilton of the New York Times 
  started asking these other firms — including Dell, HP, Samsung, 
  and Microsoft — about how they’re responding to working 
  conditions. The answers? Silence, pat press releases, and very 
  little actual information.

<http://bits.blogs.nytimes.com/2012/04/08/disruptions-on-worker-conditions-apples-rivals-are-silent/>

  Read/post comments

<http://tidbits.com/article/12923#comments>




$$

This is TidBITS, a free weekly technology newsletter providing timely
news, insightful analysis, and in-depth reviews to the Macintosh and
Internet communities. Feel free to forward to friends; better still,
please ask them to subscribe!

Non-profit, non-commercial publications and Web sites may reprint or
link to articles if full credit is given. Others please contact us. We
do not guarantee accuracy of articles. Caveat lector. Publication,
product, and company names may be registered trademarks of their
companies. TidBITS ISSN 1090-7017.

Copyright 2012 TidBITS: Reuse governed by Creative Commons license.

Contact us at:	  <editors@tidbits.com>
License terms:    <http://tidbits.com/copyright.html>
Full text search: <http://tidbits.com/search>
Subscriptions:	  <http://tidbits.com/lists.html>
Account help:     <http://tidbits.com/about_accounts.html>




