When speaking about attacks against networks and computers, people mainly think today about viruses, worms, Trojans, keyloggers, denial of services, etc. In the last ten years a lot of new attacks were found against servers and smart cards. First are side-channels attacks: those are by using ”esoteric” channels to obtain protected, secure and private informations. Esoteric here means very often channels related to the communication channel (time of interaction), processors (power, electromagnetic radiations, caches, branching, etc.). Second are the malicious faults related to secret key cryptography. The interaction of cryptographic algorithms with malicious faults must be carefully known and understood: one error sometimes means a totally broken system.
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