Sixteen states collectively suffered more than 90 false reports of school shooters during three weeks in September—and many appear to be connected.

Constantly posting content on social media can erode your privacy—and sense of self.

Plus: CIA failures allegedly got US informants killed, a former NSA worker is charged under the Espionage Act, and more.

People around the world are rallying to subvert Iran's internet shutdown, but actually pulling it off is proving difficult and risky.

Plus: WhatsApp plugs holes that could be used for remote execution attacks, Microsoft patches a zero-day vulnerability, and more.

The messenger protocol had gained popularity for its robust security, but vulnerabilities allowed attackers to decrypt messages and impersonate users.

For decades, security researchers warned about techniques for hijacking virtualization software. Now one group has put them into practice.

Damage to the pipeline that runs between Russia and Germany is being treated as deliberate. Finding out what happened may not be straightforward.

The internet infrastructure company has an alternative tool to check whether you’re human—and it doesn’t force you to pick out buses in tiny boxes.