John H. Sawyer is a senior security analyst with InGuardians, specializing in network, mobile and Web application penetration testing. John's experience in enterprise IT security includes penetration testing, system and network hardening, intrusion analysis, and digital forensics. John has developed and taught cybersecurity training for a large university and spoken at events for industry and law enforcement. He has consulted with federal, state and local law enforcement agencies on malware analysis, hacker attacks and digital forensics. John is the author of the popular blog "Evil Bytes" at DarkReading.com, and is a member of the winning team from DEF CON 14 and 15's Capture the Flag competition.