How to infer a bank PIN number in 15 guesses
Register story. “Cambridge researchers have documented a worrying PIN cracking technique against the hardware security modules commonly used by bank ATMs. Mike Bond and Piotr Zielinski have published a paper detailing how a complex mathematical attack can yield a PIN in an average of 15 guesses. By design, it shouldn’t be possible to guess a four-digit pin in less than an average of 5,000 attempts. …”