Josh Sitter

Senior Cybersecurity Consultant with 25+ years of IT and Cyber Security experience, including 7+ years specializing in Advanced Threat Hunting, Detection Engineering, Threat Intelligence Integration, APT Defence, and Enterprise Security Operations. Currently operating within one of Canada's major financial institutions, focusing on nation-state threat detection, enterprise-scale Microsoft Sentinel operations, advanced telemetry correlation, cloud security initiatives, ransomware investigations, insider threat investigations, and enterprise detection engineering. Experienced in leading threat hunting initiatives, Microsoft Sentinel deployment planning, ADX notebook integration projects, Microsoft Graph and Fabric integrations, SOC modernization efforts, and threat intelligence-driven security operations.

Seeking senior consulting, threat hunting, detection engineering, or security operations leadership opportunities in Japan.

Sr. Cyber Threat Hunter at CIBC (Canadian Imperial Bank of Commerce) (2022-05 – 2026-07)

• Led advanced threat hunting operations focused on nation-state and APT activity.
• Supported Microsoft Sentinel deployment and detection engineering initiatives.
• Conducted ransomware, insider threat, and enterprise incident investigations.
• Improved SOC operational maturity through telemetry correlation and workflow optimization.

Lead Threat Hunter at Hitachi System Security Inc. (2021-10 – 2022-04)

• Built threat hunting program from planning through MSSP operational maturity.
• Created hunting roadmaps and scalable detection methodologies.
• Integrated Microsoft Sentinel connectors and automation workflows.

Lead Threat Hunter at Open Text Corporation (2020-06 – 2021-10)

• Developed advanced detection mechanisms against APT activity.
• Improved operational visibility and detection engineering capabilities.

Senior Cyber Security Consultant at Buck (Arthur J. Gallagher & Co.) (2018-12 – 2020-03)

• Conducted security reviews, phishing simulations, incident response, and forensic investigations.
• Collaborated with governance, compliance, HR, and legal stakeholders.

Freelance Cybersecurity Consultant at Self-Employed (2002-01 – 2017-03)

Provided independent cybersecurity consulting, security research, threat intelligence analysis, and infrastructure hardening support across a variety of private and international environments.

• Infrastructure Hardening & Security Assessments
• Open-Source Intelligence (OSINT)