https://www.vincentpassaro.com High-scale systems engineering, adversary language, and agentic defense insights from the builder of FT3 and Head of Attacker Engineering, Stripe. en-us https://www.vincentpassaro.com/blog/ft3-vs-mitre-f3-operating-layer https://www.vincentpassaro.com/blog/ft3-vs-mitre-f3-operating-layer FT3 built the operating language for fraud defense before the market had one. The next phase is making that language executable. Wed, 27 May 2026 22:14:00 +0000 https://www.vincentpassaro.com/blog/agentic-commerce-object-of-fraud https://www.vincentpassaro.com/blog/agentic-commerce-object-of-fraud Fraud defense now requires language for delegated authority, scoped consent, and machine-speed behavior. Explore the three-axis coordinate model. Sun, 07 Jun 2026 21:05:00 +0000 https://www.vincentpassaro.com/blog/fraud-frameworks-convergence https://www.vincentpassaro.com/blog/fraud-frameworks-convergence Five fraud frameworks like FT3 and MITRE F3 emerged in 18 months. Here is why the industry must move past fragmentation toward operational interoperability. Sun, 24 May 2026 09:00:00 +0000 https://www.vincentpassaro.com/blog/mission-first-leadership https://www.vincentpassaro.com/blog/mission-first-leadership Mission-critical leadership is not about control. It is about creating the clarity, rigor, and trust teams need to move under pressure. Exploring executive leadership, cross-functional alignment, mentorship, and disciplined execution build teams that can change outcomes when the stakes are real. Wed, 13 May 2026 22:00:00 +0000 https://www.vincentpassaro.com/blog/building-adversary-language-systems https://www.vincentpassaro.com/blog/building-adversary-language-systems Inside every adversarial system, there is a moment when the harm is real but the language is still behind the event. Traces the work of turning messy, high-stakes domains into shared operating language defenders can use to name, map, automate, prosecute, and disrupt. Tue, 12 May 2026 00:00:00 +0000 https://www.vincentpassaro.com/blog/open-source-as-defensive-infrastructure https://www.vincentpassaro.com/blog/open-source-as-defensive-infrastructure Open source is shared defense, which is why FT3 had to be visible, inspectable, and extensible and how open frameworks become defensive infrastructure when defenders can test them, improve them, and build on them. Tue, 12 May 2026 00:00:00 +0000 https://www.vincentpassaro.com/blog/the-language-is-infrastructure https://www.vincentpassaro.com/blog/the-language-is-infrastructure Before defenders can automate, disrupt, or prosecute, they need a shared language that survives the handoff. Mon, 11 May 2026 07:23:00 +0000 https://www.vincentpassaro.com/blog/stix-is-the-answer-until-you-ask-it-about-fraud https://www.vincentpassaro.com/blog/stix-is-the-answer-until-you-ask-it-about-fraud STIX 2.1 is the language of CTI, but it fails at modeling financial fraud like card testing. Vincent Passaro breaks down the architectural gaps and the cost of custom extensions. Wed, 18 Mar 2026 00:00:00 +0000 https://www.vincentpassaro.com/blog/inside-a-tier-3-incident-response-career https://www.vincentpassaro.com/blog/inside-a-tier-3-incident-response-career Excerpts from a long-form conversation about Incident Response at scale as not just a test of tools. It is a test of language, memory, trust, and decision-making while the facts are still arriving. Vincent Passaro reflects on Tier-3 IR, AWS-scale response, and the lessons that later shaped FT3. Thu, 21 Jan 2021 00:00:00 +0000