pajus @published 2026-10-15 · 10 min read SMTP Smuggling on Debian 13: Postfix Defenses How SMTP smuggling abuses bare-LF end-of-data handling to pass SPF, and how to detect and block it in Postfix on Debian 13 with a self-test. Tags Debian Linux Security Server Hardening Hacking Email Security
pajus @published 2026-10-03 · 10 min read SSH Agent Forwarding Hijacking on Debian 13 How root on a jump host hijacks a forwarded SSH agent socket, how to spot it with ss and lsof, and how to stop SSH agent forwarding abuse on Debian 13. Tags SSH Linux Security Server Hardening Hacking Debian
pajus @published 2023-07-21 · updated 2026-09-23 · 2 min read Kevin Mitnick: From Outlaw to Security Expert Kevin Mitnick went from America's most wanted computer outlaw to KnowBe4's chief hacking officer. How a notorious hacker became a security expert. Tags Hacking Cybercrime
