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Charlie Miller finds MacBook battery security hole, plans to fill with Caulkgun
Those batteries have probably met a worse fate than the white MacBook line they came from. According to Forbes, Charlie Miller's managed to render seven of them useless after gaining total access to their micro-controllers' firmware via a security hole. Evidently, the Li-ion packs for the line of lappies -- including Airs and Pros -- are accessible with two passwords he dug up from an '09 software update. Chuck mentions that someone could "use them to do something really bad," including faulting charge-levels and thermal read-outs to possibly even making them explode. He also thinks hard-to-spot malware could be installed directly within the battery, repeatedly infecting a computer unless removed. Come August, he'll reportedly be detailing the vulnerability at the Black Hat security conference along with a fix he's dubbed Caulkgun, which only has the mild side-effect of locking-out updates by Apple. Worth being safe these days, though. Right? Full story in the links below.
MacBook and MacBookPro suffer performance anxiety once the battery is removed
Are you one of those thrifty-types who's always looking for an angle, always trying to stretch every last penny? You know who we're talking about: Montel Williams bases whole episodes around you, the kind of person who reuses tea bags and separates sheets of triple-ply paper towels. Unfortunately, it now looks like you now have one less trick at your disposal. According to Zach Honig over at Gearlog, running your MacBook or MacBookPro without its battery (trying to squeeze out an extra month or two of battery life) will cause a significant performance decrease: we're talking upwards of 40 percent. When he checked Apple's knowledgebase, it turns out that this is by design -- processor speed is reduced when the machine detects that its relying solely on A/C to prevent it from demanding more power than the adapter alone can provide (and any nasty shutdowns that would result). We don't know if we buy this line of reasoning, but one thing is certain: if you know what's good for you, you'll leave that battery where it belongs.
How to calibrate your MacBook battery
This Apple KB article is a must read for all you MacBook and MacBook Pro owners out there. It details the process of 'calibrating' your MacBook's battery, which is very important to the overall lifetime of the battery. Astute readers will notice that since the last iteration of the 15 inch Powerbook and all the new MacBooks sport new batteries the process of calibration is slightly different than it was in days of yore.[via theory.isthereason]
