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What is Signal, the app at center of White House security breach?
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White House

What is Signal, the app at center of White House security breach?

NBC Bay Area business and tech reporter Scott Budman breaks down what to know about Signal, the messaging app where a journalist says he was accidentally texted details of a planned United States attack by the country’s top defense officials.

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What is Signal, the app at center of White House security breach?
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