)
Since 2012, we've secured the world's most targeted software with real security research and an attacker's mindset. App and infra security, blockchain, AI/ML, cryptography, and low-level systems, all under one roof. We map your threats, pressure-test your architecture and design, and review your code in depth, across verticals and at every stage of development.
Most of our work is public: 940+ publications, including 620+ public security audits and 200+ open-source repos. The full collection is at https://github.com/trailofbits/publications.
Our clients include OpenAI, Anthropic, Airbnb, Google, Meta, Microsoft, Zoom, and Reddit, alongside leading blockchain and AI companies.
Why work with us
Clients choose Trail of Bits for:
- Breadth no one else has under one roof. Application security, blockchain, AI/ML, cryptography, and low-level systems usually live at separate specialist shops. We cover all of them in one firm, and we pull cryptographers, compiler engineers, and systems people onto the same review as needed. We run one of the largest consulting cryptography teams in the world.
- Expertise you can verify. Our engineers publish peer-reviewed research, contribute to standards, and build the tools the industry relies on, including Slither, Echidna, and Manticore. Around 10% hold PhDs. The people doing original research are the ones who staff your engagement.
- Research that moves the field forward. We placed second in DARPA's Cyber Grand Challenge and won a $3M second-place prize at the 2025 DARPA AI Cyber Challenge finals, then open-sourced the system we built (Buttercup). We advise DARPA, ARPA-H, and the UK's Frontier AI Taskforce.
- We fix software, not just bugs. An engineer reproduces and explains every finding with its root cause and the path to a fix. We aim to retire whole classes of bugs, not just the instances in front of us, so your codebase comes out more resilient than a list of patched issues.
