If you have an Apple or an Android phone—and you probably do—you have the option of locking your phone using a PIN code. With most of these phones, you can choose a four-digit PIN or a six-digit PIN.

Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. Update, May 20, 2025: This story, originally published May 19, ...

You’ve likely seen a list of top 25 passwords that get reused time and time again – “password” is a usual suspect – but what about phone PIN numbers? How ...

Secure instant messaging app Signal launched this week a new feature called "Signal PINs" which the company says will help users migrate account data between devices. Signal says that in the long run, ...