John Jackson is a Senior Offensive Security Consultant and is the founder and a former member of Sakura Samurai 桜の侍, a hacking group dedicated to legal hacking.

He is most known for multiple CVE and government/enterprise security research contributions, and his book Corporate Cybersecurity: Identifying Risks and the Bug Bounty Program. Jackson currently resides in Denver, Colorado. He spends much of his time hacking, but also enjoys reading, writing, and making music.

Jackson has contributed to the threat and vulnerability space, disclosing several pieces of cyber vulnerability research and assisting in resolution for the greater good. He continues to work on several projects and collaborates with other researchers to identify major cyber vulnerabilities.