4096-bit RSA happens to be one of the most secure encryption algorithms worldwide, but researchers Daniel Genkin, Adi Shamir (co-creator of the algorithm itself) and Eran Tromer enlisted the help of a microphone in order to tune in to the sounds a computer’s CPU whenever it decrypts data. The sound is the result of the CPU regulating its voltage, with each sound emitted to represent a certain RSA key. Once you understand the RSA system of encryption, it is a simple matter of cracking the code in order to obtain full access to the data. RSA happens to be the only encryption method to be tested, and if it could be cracked, less secure methods would not be able to stand a chance either, using the same principle. Security and privacy issues, first world problems.