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Home » Magazine Archive » 2009 » No. 5 » Lest We Remember: Cold-Boot Attacks on Encryption... » Abstract
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Lest We Remember: Cold-Boot Attacks on Encryption Keys
![[article image]](/system/assets/0000/0599/042209_CACMp94_Lest_We_Remember.large.jpg?1240437944&1240437944 "cold-boot attack of a laptop's memory chips")
DRAM retains its contents for several seconds after power is lost. Although DRAM becomes less reliable when it is not refreshed, it is not immediately erased, and its contents persist sufficiently for malicious (or forensic) acquisition of usable full-system memory images.
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