The Internet’s Forgotten Protocols: Why SMTP, FTP, and Telnet Are Still Insecure (and What to Use Instead)
If the internet had a junk drawer, it would be full of old protocols we still use because “they just work.” SMTP delivers email. FTP moves files. Telnet lets you manage systems. They’re simple, familiar—and dangerously outdated. Here’s the problem: these protocols were never designed for hostile networks. No encryption. Weak or no authentication. Zero…