John Strand is an American security professional and a known senior instructor of the SANS Institute. He teaches SEC504: Hacker Techniques, Exploits, and Incident Handling; SEC560: Network Penetration Testing and Ethical Hacking; SEC580: Metasploit Kung Fu for Enterprise Pen Testing; and SEC464: Hacker Detection for System Administrators. John is the course author for SEC464: Hacker Detection for System Administrators and the co-author for SEC580: Metasploit Kung Fu for Enterprise Pen Testing. He is the owner of Black Hills Information Security, specializing in penetration testing and security architecture services.