Security Training

A free, no-signup primer on network security fundamentals — segmentation, firewalls, VPNs, IDS/IPS, DNS security and zero trust — written for people starting out, not just CISOs.

A free, no-fluff primer on operating system security: patching, least privilege, hardening baselines, logging, disk encryption, secure boot and privilege escalation — the fundamentals every IT and security beginner needs.