# Trail of Bits > Since 2012, Trail of Bits has helped secure some of the world's most targeted organizations and products. We combine high-end security research with a real-world attacker mentality to reduce risk and fortify code. We don't just fix bugs, we fix software. Trail of Bits provides comprehensive security services through four primary areas of expertise: application security, blockchain, cryptography, and AI/ML. Our approach emphasizes discovering root causes of security weaknesses and providing actionable recommendations that enhance overall system resilience. ## Software assurance services - [AI/ML Security](https://www.trailofbits.com/services/software-assurance/ai-ml/) - [Application Security](https://www.trailofbits.com/services/software-assurance/appsec/) - [Blockchain Security](https://www.trailofbits.com/services/software-assurance/blockchain/) - [Cryptography](https://www.trailofbits.com/services/software-assurance/cryptography/) ## Security reviews - [AI/ML](https://github.com/trailofbits/publications?tab=readme-ov-file#mlai-reviews) - [Cryptography](https://github.com/trailofbits/publications?tab=readme-ov-file#cryptography-reviews) - [Technology product](https://github.com/trailofbits/publications?tab=readme-ov-file#technology-product-reviews) - [Cloud-native](https://github.com/trailofbits/publications?tab=readme-ov-file#cloud-native-reviews) - [Invariant testing and development](https://github.com/trailofbits/publications?tab=readme-ov-file#invariant-testing-and-development-engagements) - [Blockchain](https://github.com/trailofbits/publications?tab=readme-ov-file#blockchain-reviews) ## Security engineering - [Custom Software Development](https://www.trailofbits.com/services/security-engineering/) - [Open Source Security](https://www.trailofbits.com/services/security-engineering/) ## Research and development - [Applied Research](https://www.trailofbits.com/services/research-and-development/) - [AI Grand Cyber Challenge Finalist](https://blog.trailofbits.com/2024/08/12/trail-of-bits-advances-to-aixcc-finals/) ## Resources - [Academic papers](https://github.com/trailofbits/publications?tab=readme-ov-file#academic-papers) - [Conference presentations](https://github.com/trailofbits/publications?tab=readme-ov-file#conference-presentations) - [Guides and Handbooks](https://github.com/trailofbits/publications?tab=readme-ov-file#guides-and-handbooks) - [Datasets](https://github.com/trailofbits/publications?tab=readme-ov-file#datasets) - [Podcasts](https://github.com/trailofbits/publications?tab=readme-ov-file#podcasts) - [Public comments](https://github.com/trailofbits/publications?tab=readme-ov-file#public-comments) - [Disclosures](https://github.com/trailofbits/publications?tab=readme-ov-file#disclosures) - [Workshops](https://github.com/trailofbits/publications?tab=readme-ov-file#workshops) - [Research reports](https://github.com/trailofbits/publications?tab=readme-ov-file#research-reports) - [Application security testing handbook](https://appsec.guide/) - [Building Secure Contracts handbook](https://secure-contracts.com/not-so-smart-contracts/cosmos/) - [ZKdocs](https://www.zkdocs.com/) ## Popular blockchain tools - [Slither](https://github.com/trailofbits/publications?tab=readme-ov-file#academic-papers) - [Medusa](https://github.com/crytic/medusa) - [Attacknet](https://github.com/crytic/attacknet) ## Popular cryptography tools - [Decree](https://github.com/trailofbits/decree) ## Popular AI/ML tools - [PrivacyRaven](https://github.com/trailofbits/PrivacyRaven) - [Fickling](https://github.com/trailofbits/fickling) ## Popular application security tools and rules - [Semgrep rules](https://github.com/trailofbits/semgrep-rules) - [Ruzzy](https://github.com/trailofbits/ruzzy) ## Other popular tools - [WeAudit](https://marketplace.visualstudio.com/items?itemName=trailofbits.weaudit) - [SARIF Explorer](https://marketplace.visualstudio.com/items?itemName=trailofbits.sarif-explorer) ## Contact and socials - [Contact Us](https://www.trailofbits.com/contact/) - [Blog](https://blog.trailofbits.com/) - [Twitter](https://twitter.com/trailofbits) - [LinkedIn](https://www.linkedin.com/company/trail-of-bits) - [GitHub](https://github.com/trailofbits/) - [Community Forum](https://slack.empirehacking.nyc/) ## Optional - [Careers](https://www.trailofbits.com/careers/) - [Resources](https://www.trailofbits.com/resources/) - [Built In Best Places](https://www.trailofbits.com/) - [Forrester Recognition](https://www.trailofbits.com/forrester/)