A new paper explains how signals oscillating at complex-valued frequencies could transform sensing, imaging, and ...

President Donald Trump appeared to place the blame for the Signal chat scandal on national security advisor Mike Waltz. The president was asked who was responsible for the scandal while signing an ...

The encrypted messaging app Signal is receiving renewed attention after high-level members of President Donald Trump’s administration inadvertently added a journalist to a group chat discussing ...

Scandal surrounding the Trump administration’s Signal group chat has led to a landmark week for the encrypted messaging app’s adoption—its “largest US growth moment by a massive margin.” ...

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Through a stroke of exceptional carelessness, President Trump’s top deputies got caught this week discussing sensitive military operations via the popular smartphone app Signal. The brewing ...

By Kate Conger Reporting from San Francisco Signal, a popular messaging app, came into the spotlight this week after reports that several senior Trump administration officials had used the tool to ...

“While I know everybody’s talking about the ‘Signal’ leak ... organization,” Ernst said during an interview with KMA radio, “so there’s a little bit of concerning news, but then ...

If you hadn’t heard of Signal before Monday, chances are you have now. The secure messaging app, available for iPhones and Android devices, has long been popular with journalists because of its ...

Messaging app Signal is in the news, and not for anything positive. Defense Secretary and former Fox News contributor Pete Hegseth recently demonstrated how not to use a secure communications ...