Behind the defense.

I learned the trade in the United States, in Maryland, a stone’s throw from Washington D.C., on critical infrastructure, side by side with Pentagon leadership. I brought home a method I never let go of, «security is learned by attacking and proven by holding», and one certainty: there are no shortcuts, only foundations.

On those foundations I built everything else. I don’t configure other people’s solutions, I build from scratch. As Co-Founder & CTO of Securitix Solutions and CTO of Vulneralt I’ve designed and shipped a proprietary arsenal to production: a full XDR/MDR platform, an AI-powered threat intelligence engine, a deception network with intelligent honeypots, tools working in production every day. An integrated suite by design, not a patchwork of acquired products. And the building never stops.

Research has stayed the most alive part of the work: dozens of vulnerabilities reported in coordinated disclosure, Critical CVEs assigned, responsible disclosures to vendors like AWS SageMaker, labstack/echo and Anthropic. Today the frontier is AI security, where AI is not just a defense but an attack surface itself. I’m among the first approved into Anthropic’s Cyber Verification Program, vetted for dual-use offensive security. When I’m not building platforms, I run penetration tests on web, mobile and AI/LLM systems.

All of this points in one direction. I started out in Taranto and I work so that technology is something you build, not something you endure: I bring enterprise-grade defenses to those who usually can’t afford them (businesses, SMEs, schools, wherever they’re needed) and I invest in training more than anything else, from mentoring students to awareness programs. Because defense is not a product you buy: it’s a capability you build. And I build it, wherever it’s needed.

Dennis Sepede.