Leadership & experts

The people who hunt attackers for a living

Behind every alert and every contained breach is a team of operators who've spent their careers on the front line. Meet the leaders setting the standard at S-Security.

Leadership team

Operators, not just executives

Each of them still takes SOC shifts, joins incident bridges, and reviews detections. Titles don't stop them from doing the work.

Alice Thompson, Chief Executive Officer

Alice Thompson

Chief Executive Officer

Alice spent a decade leading security operations at a global bank before co-founding S-Security in 2018. She built the company on a single conviction — that elite defense should be accessible to every organization, not just the few that can afford a 40-person team. She sets strategy, but you'll still find her on the incident bridge when it matters.

Bob Martinez, Chief Technology Officer

Bob Martinez

Chief Technology Officer

A former red-team operator and platform architect, Bob co-founded S-Security to rebuild enterprise tooling for the many. He leads the engineering and detection-science teams behind a platform that analyzes over four billion events a day. His obsession: machine speed without losing human judgment.

Charlie Kim, Lead Security Analyst

Charlie Kim

Lead Security Analyst

Charlie runs the human side of the SOC, mentoring analysts and owning the playbooks that turn raw alerts into decisive action. With a background in digital forensics, he's personally contained intrusions in some of our highest-stakes engagements — including the 11-minute ransomware eviction our clients still talk about.

Priya Nair, VP of Threat Intelligence

Priya Nair

VP, Threat Intelligence

Priya leads the research unit that tracks ransomware crews and nation-state actors. Her team's indicators reach client defenses before campaigns hit the mainstream news. She previously briefed government agencies on advanced persistent threats and is a frequent voice at security conferences.

David Okoro, Head of Incident Response

David Okoro

Head of Incident Response

When a client is under active attack, David's team is on the line within minutes. A veteran DFIR responder, he has led breach containment across healthcare, finance, and critical infrastructure. He's relentless about one thing: getting clients back to business safely and fast.

Sofia Reyes, VP of Engineering

Sofia Reyes

VP, Engineering

Sofia owns the reliability and scale of the S-Security platform — the systems that ingest billions of events without dropping a signal. She's spent her career building distributed systems that have to be right the first time, and she holds the team to a 99.9% uptime SLA she helped define.

Advisory board

Guidance from across the industry

Our advisors bring decades of perspective from the boardroom, the research lab, and the regulator's office.

Margaret Chen

Former Bank CISO

Three decades securing financial institutions. Margaret advises on enterprise risk governance and board-level reporting that executives actually understand.

Dr. Idris Bello

Security Researcher

A published academic in adversarial machine learning, Idris helps keep our detection science ahead of attacker innovation and AI-driven evasion.

Helena Voss

Privacy & Compliance Counsel

Helena keeps us honest on data protection, guiding our posture across GDPR, HIPAA, and emerging global privacy regimes.

Join us

Want to defend the undefended?

We're always looking for relentless, curious people who want their work to matter. If you'd rather stop breaches than write a slide deck about them, you'll fit right in.

We give analysts and engineers real ownership, modern tooling, and the kind of mentorship that turns good defenders into great ones.

S-Security analysts collaborating in the security operations center
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Put this team on your side

The experts above defend thousands of organizations every day. See what they can do for yours.