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What is Signal — and is it secure?

Signal is a widely used end-to-end encrypted messaging app that has recently been targeted by hackers accused of links to Russia.

Published Apr 25, 2026, 5:35 PM EDT | WFMZZ

Signal is an end-to-end encrypted messaging app long regarded as one of the most secure. It has recently faced attacks from hackers who are accused of having links to Russia.