acer aspire 3680 battery
Kamis, Juli 28th, 2011Modern laptop batteries contain a microcontroller that monitors the power level of the unit, allowing the operating system and the charger to check on the battery’s charge and respond accordingly. That includes permanently ruining batteries at will, and may enable nastier tricks like implanting them with hidden malware that infects the Apple A1185 Battery no matter how many times software is reinstalled or even potentially causing the batteries to heat up, catch fire or explode.
Miller discovered the two passwords used to access and alter Apple batteries by pulling apart and acer aspire 3680 battery update that Apple instituted to fix a problem with Macbook batteries. Using those keys, he was soon able to reverse engineer the chip’s firmware and cause it to give whatever readings he wanted to the operating system and charger, or even rewrite the firmware completely to do his bidding.
In fact, Miller permanently seven batteries just in the course of his tinkering. More interesting from a criminal perspective, he suggests, might be installing persistent malware on the chip that infects the Apple A1189 Battery of the computer to steal data, control its functions, or cause it to crash. Few IT administrators would think to check a battery’s firmware for the source of that infection, and if undiscovered the chip could re-infect the computer again and again.
When Miller examined those batteries in several acer aspire 4520 battery, however, he found a disturbing vulnerability. That embedded chip means the lithium ion batteries can know when to stop charging even when the computer is powered off, and can regulate their own heat for safety purposes.