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Update Signal and pay attention when joining groups:
wired.com/story/russia-signal-

👉 No, Signal has not been compromised
👉 No, Signal encryption has not been broken
👉 No, there is no back-door in Signal

You should continue using Signal. The update is responding to a sophisticated, state-level attack targeting specific groups.

Unless you are a high-value target, you are almost certainly never going to see this in the wild.

If you know you are a high-value target, ask your support.

WIRED · A Signal Update Fends Off a Phishing Technique Used in Russian EspionageBy Andy Greenberg