Trail of Bits

Trail of Bits is a highly specialized cybersecurity research and consulting firm headquartered in New York City, widely regarded as one of the foremost authorities on software assurance, source code review, and blockchain security. Founded in 2012 by Dan Guido, the company has built an extraordinary reputation for deep technical analysis that extends far beyond traditional penetration testing into the realm of formal verification, program analysis, and cryptographic review.

Trail of Bits is perhaps best known for their extensive work in blockchain and smart contract security, having audited many of the most prominent cryptocurrency protocols and DeFi platforms. Their team develops and maintains numerous open-source security tools including Slither, Echidna, and Manticore, which have become industry standards for smart contract and binary analysis.

Beyond blockchain, Trail of Bits provides application security assessments, source code reviews, cloud infrastructure reviews, and cryptographic implementations analysis for organizations ranging from startups to government agencies. Their consultants include PhD researchers, former CTF champions, and published authors who approach security from a deeply academic yet practical perspective. The firm's work product is known for exceptional depth and rigor, making them the choice for organizations where the consequences of security failures are severe.