High numbers of regulatory T cells (red) — seen here interacting with antigen-presenting cells (blue) — are usually associated with poorer outcomes in cancer. A new MSK study, however, found that a ...

James LaPorta is a national security coordinating producer in CBS News' Washington bureau. He is a former U.S. Marine infantryman and veteran of the Afghanistan war. The report found the former Fox ...

A Pentagon watchdog report has found that Defense Secretary Pete Hegseth put U.S. service members at risk when he used the Signal messaging app to discuss a military strike in Yemen earlier this year.

Secretary of Defense Pete Hegseth risked compromising sensitive military information, which could have endangered American troops and mission objectives, when he used Signal in March of this year to ...

Jack Dorsey and Peter Todd are among the Bitcoiners voicing support for privacy messaging app Signal to adopt Bitcoin amid a “Bitcoin for Signal” campaign. Several Bitcoiners, including Jack Dorsey, ...

The encryption protecting communications against criminal and nation-state snooping is under threat. As private industry and governments get closer to building useful quantum computers, the algorithms ...

London-based artificial intelligence startup Signal Media Ltd., better known as Signal AI, today announced it has raised $165 million in new growth-equity funding led by Battery Ventures. Following ...

The Signal Foundation president recalls where she was when she heard Trump cabinet officials had added a journalist to a highly sensitive group chat. Of course, you know the rest: In the piece, The ...

Privacy-focused messaging app Signal announced on Monday that it’s introducing a feature that allows users to back up their text conversations for free, along with ...

The Pentagon’s inspector general has received evidence that the military plans shared from Secretary of Defense Pete Hegseth’s Signal account to a group chat earlier this year were taken from a US ...

After messages from Mike Waltz's leaked chat on the Signal app went massively public months ago, he was ousted as President Donald Trump's top national security adviser. Now, he's up for a new ...