Former national security adviser Mike Waltz defended his use of the messaging app Signal during a confirmation hearing Tuesday during which lawmakers largely avoided the topic.

ATS is a piece of hardware that automatically shifts the electrical load from primary power supply to a backup or standby ...

When light strikes the photodiode’s active region, current flows from cathode to anode. Ideally, this entire photocurrent ...

What is Signal, the chat app used by US officials to share attack plans? Signal uses end-to-end encryption for its messaging and calling services that prevents any third-party from viewing ...

Defense Secretary Pete Hegseth and other Trump officials allegedly used Signal for a group chat to discuss a highly sensitive operation.

Signal’s encryption protocol is open source, meaning that it’s freely available for anyone to inspect, use or modify. The encryption protocol is also used by another popular chat service ...

Marlinspike merged two existing open source apps, one for texting and one for voice calls, to create Signal. The nonprofit Signal Foundation was set up in 2018 to support the app’s operations as well ...

Marlinspike merged two existing open source apps, one for texting and one for voice calls, to create Signal. The nonprofit Signal Foundation was set up in 2018 to support the app’s operations as well ...

Signal’s encryption protocol is open source, meaning that it’s freely available for anyone to inspect, use or modify. The encryption protocol is also used by another popular chat service ...