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Undelete an iPhone Voicemail Message

There's no Command-Z in the Phone app, but you may be able to retrieve a deleted voicemail message: Open the Voicemail screen in the Phone app. At the bottom of the screen, tap Deleted Messages. To restore a listed message, tap it and then click Undelete.

 
 

Hackers Can Root Macs by Going Back in Time

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A bug in OS X 10.8 Mountain Lion and 10.7 Lion allows attackers to gain superuser access if they reset the clock to 1 January 1970. The bug shouldn’t affect most people, as the attacker also needs shell access to the Mac, and the user must have enabled superuser access in the past.favicon follow link

 

Comments about Hackers Can Root Macs by Going Back in Time
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James Bailey  2013-09-03 12:08
There is a partial workaround for this problem that I use. I edit the bash logout file .bash_logout to include this line:

sudo -K

(that's a capital K).

This will remove any past sudo shell access from your history and block this exploit but only when you logout from the shell. When using sudo for anything, I always create a new shell window in Terminal and exit when I'm done. This ensures that the logout script runs.

The best part is that if or when Apple fixes this, you don't really have to do anything because the only consequence to doing this is that you get the initial warning message each time you used sudo instead of just the first time.