Having good passwords may protect you from drive-by attacks, but if you are individually targeted, online thieves can steal your cell phone number and reset all your passwords in minutes. Google Voice used with two-factor authentication is an answer for those for whom authentication apps don’t work well.

Logging into a new Apple device may result in a prompt that asks you for the passcode or password of another one of your devices. Glenn Fleishman explains why this happens and why it’s a good idea.

Billions of email addresses and other bits of data have been revealed in security breaches this year alone. There’s nothing you can do about what’s already out there, but read on for advice on preventing future problems.

A relatively new form of spam is making the rounds on the Internet. It purports to be from a hacker who has taken over your computer and who will reveal your porn browsing to all your contacts unless you pay a Bitcoin blackmail. It’s fake, but its use of breached passwords as “proof” points toward a concerning future.

Social news site Reddit has announced a relatively minor data theft that’s a good reminder to change old passwords, turn on two-factor authentication, and delete any Reddit content you don’t want linked to your email address.