About
Esteban Rojas Villar
I architect defensive security programs that protect banking infrastructure from sophisticated threats while enabling business innovation. Over 12+ years in financial services cybersecurity,I've built incident response capabilities, threat detection systems, and security operations that reduce breach risk without slowing the business -- because effective security accelerates trust.
My certifications span both offensive and defensive disciplines -- from OSCP and CRTO to Digital Forensics Examiner and Cloud Security Knowledge. I combine traditional security fundamentals with emerging AI technologies, leveraging machine learning for behavioral anomaly detection and predictive threat intelligence.
Beyond the technical, I believe security expertise means little without community. I founded and organize BSides Costa Rica, bringing together hundreds of security professionals, and am active in the OWASP Costa Rica chapter. Based in San Jose, Costa Rica, I work globally with teams at Experian to protect enterprise systems at scale.
Core Values
Security First
Every decision starts with security. I believe in defense-in-depth and reducing attack surface at every layer.
Evidence-Driven
Assumptions are the enemy. I follow the evidence, verify findings, and document everything for reproducibility.
Curiosity
Threat actors don't stand still and neither do I. Continuous learning and staying ahead of emerging techniques is non-negotiable.
Reliability
When the pager goes off at 3 AM, I show up. Dependability under pressure is the foundation of any security team.