The German government suspects that Russia is behind attacks on the messenger Signal. What's behind it and what you should look out for.

Depending on how intensively you use the messenger, it can take days for a deleted message to disappear. Signal ignored the bug for half a year.

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We hear Signal is in the news. As longtime fans of the app, and secure messaging more broadly, we feel like it's our duty at Engadget to ensure you know how to use the software properly. Signal is ...