(Modified:
2026-10-21)
— Written by
SimeonOnSecurity— 3 min read
Master security for the CompTIA A+ 220-1202 Core 2 exam. Learn physical and logical security, Windows security settings, wireless protocols, malware, social engineering, and hardening.
(Modified:
2026-10-10)
— Written by
SimeonOnSecurity— 6 min read
Master Linux security for the CompTIA Linux+ XK0-006 exam. Learn permissions, special bits, ACLs, sudo, PAM, SSH hardening, SELinux, AppArmor, firewalls, auditing, OpenSSL, and gpg with real examples.