TeleMessage, an encrypted messaging app based upon Signal, has been temporarily suspended out of "an abundance of caution" ...

Sen. Ron Wyden (D-Ore.) is calling on the Department of Justice to investigate the risks associated with Trump administration ...

TeleMessage, a messaging app used by Trump adviser Mike Waltz, has suspended services after a hacker accessed sensitive ...

TeleMessage's modified Signal app, TM SGNL, used by Trump officials, has been found to allow plaintext chat access, leading ...

Hackers say they have breached the message archiving system Trump officials have adopted since the Signal chat debacle in ...

A hacker breached TeleMessage, a company that sells a modified version of Signal to the US government. Mike Waltz was spotted ...

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TeleMessage, an Israeli software company that sells a modified version of the encrypted messaging app Signal to the U.S.

A hacker breached TeleMessage, a government-approved messaging app used by Trump administration officials, exposing archived ...

TeleMessage, the app that former national security adviser Mike Waltz was seen using, has suspended all services after ...

Good morning. Mostly sunny with a high around 77. A low around 60 overnight. The Nationals will host the Cleveland Guardians ...

Ahead of the conclave to elect a new pope, a chimney has been installed atop the Sistine Chapel to signal when a new pontiff has been selected. NBC News' Anne Thompson describes how it works.