Lock In a previous post, I talked about whole disk encryption. More and more security incidents are reports by medias were laptop are stolen or list in the nature with thousands of ultra-confidential-top-secret-data. That’s why disk encryption becomes a hot topic at the moment.

A “hot” topic? In fact, it’s more a “cold” topic! It seems that DRAMs memory chips are extremely sensitive to their environment: when the temperature falls, they can keep their data for minutes whitout power! With physical access to an encrypted laptop, it becomes easy to try to recover the encryption key:

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