I prefer this one: "RSA Key Extraction via Low-Bandwidth Acoustic Cryptanalysis" "The attack can extract full 4096-bit RSA decryption keys from laptop computer

I prefer this one: "RSA Key Extraction via Low-Bandwidth Acoustic Cryptanalysis" "The attack can extract full 4096-bit RSA decryption keys from laptop computers (of various models), within an hour, using the sound generated by the computer during the decryption of some chosen ciphertexts. We experimentally demonstrate that such attacks can be carried out, using either a plain mobile phone placed next to the computer, or a more sensitive microphone placed 4 meters away." http://www.tau.ac.il/~tromer/acoustic/ http://www.tau.ac.il/~tromer/acoustic/ Video: http://youtu.be/DU-HruI7Q30 http://youtu.be/DU-HruI7Q30 I'm pretty sure there's a better video of the attack being performed somewhere, but I can't find it right now.