Signal is the world’s most widely used truly private messaging app, and our cryptographic technologies provide extra layers of privacy beyond the Signal app itself. Since launching in 2013, the Signal Protocol—our end-to-end encryption technology—has become the de facto standard for private commu...
Its not about protection or even going unnoticed like the responders say. I’ve fixed unprotected payment systems on websites, the real problem is they use it to validate CC information as live. By raising the cost, you make other lower hanging fruit more appealing and keep scammers from using your service to test CC info.