Hayashi previously served as an Assistant Police Inspector with the Tokyo Metropolitan Police Department, where he investigated cybercrime cases, conducted forensic examinations, analyzed malicious code, and developed cybercrime investigation training programs. According to his professional profile, he participated in what was described as Japan’s first arrest of malware developers. After his work in law enforcement, he moved into security consulting and enterprise defense leadership roles at Symantec Japan Research Institute, Nomura Research Institute, Symantec, Broadcom, and later Zscaler. His background includes directing national security consulting teams, conducting incident response and security architecture projects, and developing specialized cybersecurity training programs for government agencies and enterprise organizations.
Hayashi holds the Certified Information Systems Security Professional (CISSP) and GIAC Certified Incident Handler (GCIH) certifications and previously served as an examination committee member for Japan’s Information-Technology Engineers Examination Center. According to his professional profile, he designed and developed cyber range exercise services that simulated targeted attacks against enterprise environments, including virtual banking infrastructure with emulated users, vulnerable systems, and attack scenarios. His profile also notes that he developed and delivered training programs focused on malware analysis, computer forensics, encryption, and public key infrastructure (PKI).
Originally trained in physics, Hayashi later transitioned into cybersecurity and digital investigations, building a career that has spanned law enforcement, consulting, enterprise security leadership, and cybersecurity education. His experience includes work with government agencies, universities, and large enterprises on cyber defense initiatives, technical training, and incident response preparedness. He continues to work in cybersecurity leadership and advisory roles while teaching for SANS.
Qualifications Summary
- Associate Instructor, SEC401: Security Essentials
- Transformation Architect at Zscaler
- Former Assistant Police Inspector, Tokyo Metropolitan Police Department
- GIAC GCIH Certified
- CISSP Certified
