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, ...

Update, May 26, 2025: This story, originally published May 24, has been updated with a brief history of PIN codes, information regarding the most secure codes you can use and why 8068 really isn’t the ...

If you use a four-digit PIN number, your personal code may not be as secure as you think. PIN codes are commonly used to unlock iPhone or Android devices, access online banking, get cash out of an ATM ...

It may be useful to change the PIN code of a newly purchased iPhone (if the PIN is set to 0000 by default for example) or for safety reasons to protect from fraudulent use of your phone in case of ...

Certain PIN codes are blacklisted on iOS. For example, iOS recommends you don't use 0000 or 0011, but doesn't have a problem with 0001 or 1001. But what combination of numbers are blacklisted, and ...

Guess how long it would take a computer to brute-force an 8-number password. The answer: instantly. That's according to Hive Systems' Password Table, which shows how shockingly quick passwords of ...