This is especially important because it helps independent specialists ensure it works as intended. Signal is open source, meaning the code is available to anyone. You don’t need to take their word for it. It’s designed to keep as little user data as possible. Signal offers end-to-end encryption, meaning that no one except your conversational partner can read the messages - not even the service provider. Signal looks and feels like your ordinary text messaging app, but how it protects messages and media in the background is different. In turn, they’ll relay the message to ensure it gets to the recipient, effectively sitting in the middle of the conversation.
When you send a message to someone over these platforms, what you’re really doing is sending a message to the service provider.
The same applies to messages you send privately over many apps (e.g., Facebook). When sending a photo over text message, the service provider (e.g., Sprint) can usually read the messages. But who else is able to see them beyond your conversational partner? When sent over text messages and apps, who else gets a copy? With Signal, a security-minded messaging app, it’s easy to send photos in private.
Nearly everyone’s sent a private photo at some point.
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