John S.

About

John S. is a cybersecurity executive, incident response leader, and published security author with more than 25 years of experience helping organizations prepare for, respond to, and recover from complex cyber threats. He has built and led global programs across security operations, CSIRT, threat intelligence, threat hunting, detection engineering, offensive security, digital forensics, vulnerability management, and product security incident response.

John has led cyber defense and response functions across Fortune 50 retail, global manufacturing, aviation, consulting, and enterprise environments. His work has spanned large-scale operations across multiple regions, dozens of countries, and more than 100 business units. He has served as an incident commander and senior escalation leader during high-impact security events, coordinating security, engineering, legal, HR, communications, crisis management, executive leadership, and external partners to contain threats, restore operations, and reduce business disruption.

Known for connecting technical depth with business impact, John helps security leaders translate adversary behavior, operational telemetry, incident findings, and exposure data into clear decisions, measurable outcomes, and executive-ready risk narratives. He has reduced mean time to containment by more than 40%, expanded detection coverage from fewer than 70 to more than 230 use cases, and built mature security capabilities across SOC, CSIRT, threat intelligence, threat hunting, offensive security, SOAR, and product security programs.

John is the author of Web Application Firewalls: A Practical Approach and holds CISSP, GCIH, and OSCP certifications. His background combines hands-on technical expertise, consulting leadership, enterprise incident command, and executive-level security program development, making him a trusted partner for CISOs focused on building resilient, intelligence-led, and business-aligned cyber defense programs.

Specialties

• CISO / Security Leadership
• Cybersecurity Consulting
• Incident Response
• Security Operations Leadership
• Threat Detection

Skills

• Change Management
• Management Consulting
• Enterprise Architecture
• Project Management
• Business Process Design
• Analyste commercial
• Business Process Management
• Gestion de processus
• ITIL
• Management

18 skills in total

Experience

• Consultant

  Akilana

  Jan 2008 — Present

  Bern Area, Switzerland