Thoughtful, detailed coverage of the Mac, iPhone, and iPad, plus the best-selling Take Control ebooks.

 

 

Pick an apple! 
 
View Extra Battery Details in Snow Leopard

In Snow Leopard, Option-click the Battery icon in the menu bar to show the battery's current condition - Normal is good. Other messages might read Replace Soon, Replace Now, Check Battery, or Service Battery. Choosing the message opens a Mac Help document with more information.

Submitted by
Doug McLean

 

 

Related Articles

 

 

Encryption Cracked by Listening to a Computer’s CPU

Send Article to a Friend

If this were a movie, we’d be laughing at the improbability of the premise — that encryption can be cracked by listening to the high-pitched sounds produced by a computer’s CPU as it decrypts data. But it’s real, and although it can be done at a distance of 4 meters with a parabolic microphone, the researchers (Daniel Genkin, Eran Tromer, and Adi Shamir, who is the S of the RSA cryptosystem) also showed that it could be done with a smartphone sitting next to a laptop. Upping the ante, they suggest that a microphone hidden inside a colocated server could eavesdrop on numerous nearby servers. In short, if security is paramount, both heavy-duty encryption and physical protection are necessary.favicon follow link

 

Comments about Encryption Cracked by Listening to a Computer’s CPU
(Comments are closed.)

James Deaton  2013-12-20 12:36
It does not matter how hard people try to hide under the bed, someone will poke under it with a boom handle some time or another. there is no way to save a computer from someone else, if they really want to see what you are doing... They will...
artMonster  2013-12-21 17:06
As far as electromagnetism is concerned, we all live in glass houses. Just keep building better blinds.