An anonymous reader writes: "Security researcher Jonathan Brossard created a proof-of-concept hardware backdoor called Rakshasa that replaces a computer's BIOS (Basic Input Output System) and can compromise the operating system at boot time without leaving traces on the hard drive. Brossard, who is CEO and security research engineer at French security company Toucan System, demonstrated how the malware works at the Defcon hacker conference on Saturday, after also presenting it at the Black Hat security conference on Thursday. Rakshasa, is not the first malware to target the BIOS — the low-level motherboard firmware that initialises other hardware components. However, it differentiates itself from similar threats by using new tricks to achieve persistency and evade detection. Rakshasa replaces the motherboard BIOS, but can also infect the PCI firmware of other peripheral devices like network cards or CD-ROMs, in order to achieve a high degree of redundancy." PDF entitled, "Hardware backdooring is practical"
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