What's a verification code, and why are they so important? Six-digit verification codes are a form of two-factor authentication, a process that helps keep your important online accounts secure. For ...

Activating a PayPal security key with your PayPal account requires a constantly changing six-digit passcode in addition to your username and password, every time you ...

We’ve all been using a passcode to secure our iPhones and iPads since forever, right? You’ve had the option to use an alphanumeric passcode since iOS 7, but if you chose to use a simple numeric code, ...

The iPhone offers strong end-to-end encryption for all your data, and that's a great feature to have on the most important computer in your life. But that encryption is only as good as the PIN or ...

A German-American team of IT security researchers has investigated how users choose the PIN for their mobile phones and how they can be convinced to use a more secure number combination. They found ...

New estimates from a security researcher suggest GrayKey, a digital forensics tool in active use by U.S. law enforcement agencies, is capable of cracking Apple's standard six-digit iPhone passcode in ...

It’s been thought for a while that a four-digit passcode on an iPhone (and other devices) was too weak. While Apple had safeguards in place to prevent repeated failed attempts, a proof of concept in ...