Abstract: Extremely large-scale multiple-input-multiple-output (XL-MIMO), which offers vast spatial degrees of freedom, has emerged as a potentially pivotal enabling technology for the sixth ...

A popular messaging app called Signal was recently the preferred communications platform for top officials in the Trump administration to discuss secret war plans. But the use of the app, widely ...

With news this week of the messaging app being used to discuss war plans, we get you up to speed on what Signal should be used for—and what it shouldn’t. MIT Technology Review Explains: Let our ...

The Presidential Records Act and the Federal Records Act require officials to preserve communications related to government business. By Luke Broadwater Luke Broadwater is a White House correspondent.

Signal, the most secure widely available messaging app, has become a go-to resource for journalists, leakers and other people concerned about privacy. But it’s not infallible. And its shortcomings and ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. It’s not clear whether the team at Signal believes the maxim that ...

Aimee Picchi is the associate managing editor for CBS MoneyWatch, where she covers business and personal finance. She previously worked at Bloomberg News and has written for national news outlets ...

The National Security Agency sent out an operational security special bulletin to its employees in February 2025 warning them of vulnerabilities in using the encrypted messaging application Signal, ...

We have probably all done it: Gossiped about a friend in an email, only to discover we accidentally included the friend in the correspondence. Or dashed off a sensitive text to Gene, our friend, and ...

We hear Signal is in the news. As longtime fans of the app, and secure messaging more broadly, we feel like it's our duty at Engadget to ensure you know how to use the software properly. Signal is ...

As ads for secure messenger Signal go, this one is hard to beat. Trump’s senior officials using the encrypted app to discuss America’s attack on Yemen — whether or not war plans were actually shared — ...