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.

A New Attack Impacts ChatGPT—and No One Knows How to Stop It

Researchers found a simple way to make ChatGPT, Bard, and other chatbots misbehave, proving that AI is hard to tame.

In the Fight Against Scams, ‘Cyber Ambassadors’ Enter the Chat

Police in the Indian state of Telangana have found a novel way to help people avoid getting swindled online: grassroots education.