Signal Finally Rolls Out Usernames, So You Can Keep Your Phone Number Private

We tested the end-to-end encrypted messenger’s new feature aimed at addressing critics’ most persistent complaint. Here’s how it works.

GitHub’s Hardcore Plan to Roll Out Two-Factor Authentication (2FA)

GitHub has spent two years researching and slowly rolling out its multifactor authentication system. Soon it will be mandatory for all 100 million users—with no opt-out.

Twitter’s SMS Two-Factor Authentication Is Melting Down

Problems with the important security feature may be some of the first signs that Elon Musk’s social network is fraying at the edges.

Careless Errors in Hundreds of Apps Could Expose Troves of Data

Researchers found that mobile applications contain keys that could provide access to both user information and private files from unconnected apps.

End-to-End Encryption's Central Role in Modern Self-Defense

With abortion set to be criminalized in more than half the US, encryption has never been more important for protection—and civil disobedience.