Q: I’ve been an Amazon customer for 20 years, but after changing my phone number, I’m locked out of my account because two-factor authentication (2FA) still uses my old number. I’ve called Amazon six ...

Authentication has been a part of digital life since MIT set up a password on their shared-access computer in 1961. Today, authentication covers virtually every interaction you can have on the ...

You’ve probably noticed a requirement to enter a temporary passcode sent through email or text message after giving your password to log into one of your online ...