I know Checkpoint invented the first physical firewall, but who invented the first Web Application Firewall? Wikipedia sites Perfecto Technologies but the source is Perfecto's PR. Any idea?
The first "WAF" likely emerged from simple rules and logic applied at the server level or on an edge device. Check out modsecurity <a href="https://en.wikipedia.org/wiki/ModSecurity" rel="nofollow">https://en.wikipedia.org/wiki/ModSecurity</a> but modesec seems to have emerged after Perfecto.