When logging in to an app or service, you often have to authenticate by entering your email address or phone number and a one-time password sent via email or text message. Engineer Daniel Huang points ...

Nestled in the middle of iOS 9 announcements were two security-related bumps: Apple now suggests you sete a six-digit passcode instead of a four-digit one; and two-factor authentication becomes a ...

I already switched to 6 (though you can't tell it wants 6) with a wipe after 10 failures. I also disabled touchID unlock on the phone, and only use it for payments ...