Signal had approximately 20 million active users in December 2020, TechCrunch reports. But it's a double-edged sword, as this level of secrecy on Signal and similar apps can also give cover to bad actors. This can be helpful for people who work with sensitive content, like journalists, organizers, or those living under repressive regimes. "We’ve designed the Signal service to minimize the data we retain about Signal users, so the only information we can produce in response to a request.is the date and time a user registered with Signal and the last date of a user’s connectivity to the Signal service," the app maker said in 2016. If the cops want access to your chats, messages, or files, they'll need direct access to your device because Signal has no record of them. Signal is an end-to-end encrypted messaging app, which is a complicated way of saying that only the device sending the message and the device receiving it can see the content of messages. A flood of sign-ups took it offline briefly this month, but it's back and ready to shield your chats from prying eyes. The messaging app achieved mainstream status after Black Lives Matter protests, a WhatsApp privacy mishap, and a boost from Elon Musk on Twitter. It's been a turbulent year, but Signal come through it on top.
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