What it is: Signal is an open source, free program that lets you communicate securely using encryption.
Any time you make a call or send a text message, that information can be intercepted and read by someone else. Chances are good no one is watching your activities but they could. If you’re doing something illegal such as committing a crime or simply passing on information your government doesn’t want you to reveal, your communication with others could be intercepted and used against you. In many countries, upsetting the government will quickly get you killed.
So if you want a safe, secure way to communicate with others without sacrificing the convenience of smartphones and computers, use Signal, a free, open source program that encrypts your data so no one (not even the makers of Signal) can crack it easily. Of course, the only way you can use Signal is to get other people to use it too, but once you have Signal and want to talk to someone else who also has Signal, you can securely chat or text message each other without fear of getting your information intercepted.
Signal runs on Android, iOS, Windows, macOS, and Linux (sorry Windows Phone and BlackberryOS users), so there’s a good chance you can use Signal with practically anyone on the planet. For further security, you can also create disappearing messages so your text messages get wiped off your own device after a fixed amount of time. That way if someone does gain possession of your device and gets your password, they won’t be able to read any of your past messages.
If you’re worried about security, download and install a free copy of Signal. Then get all your friends and contacts to use Signal as well. The more people who use Signal, the easier it will be for everyone to keep their communication private and secure from prying eyes of any type.