Could a hacker steal enough information from a store you’ve shopped at to print up fake debit cards in your name and withdraw cash from your checking account at an ATM? Even if you’ve never told a ...

Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. Keeping your iPhone or Android device secure is a no-brainer.

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 ...