Winternship 2025

Founded in 2012 by 3 expert hackers with no investment capital, Trail of Bits is the premier place for security experts to boldly advance security and address technology’s newest and most challenging risks. It has helped secure some of the world's most targeted organizations and devices. Our combination of novel research with practical solutions reduces the security risks that our clients face from emerging technologies. Our work helps drive the security industry and the public understanding of the technology underlying our world.

Cybersecurity preparedness is a moving target. Companies like ours are the tip of the spear in the fight against attackers. Our research-based and custom-engineering approach ensures that our client’s capabilities are at the forefront of what’s available. For companies and technologies that live and die by their security, a proactive, tailored approach is required to keep one step ahead of attackers.

Democratizing security information is essential. As part of our business, we provide ongoing informational support through blogs, whitepapers, newsletters, meetups, and open-source tools. The more the community understands security, the more they’ll understand why a company like ours is so unique and valuable.

Join Trail of Bits for a unique 2025 "Winternship" (Winter Internship) opportunity. This short-term remote program aligns with your University's winter break, letting you work on exciting projects while enjoying festive moments with family and friends. Starting in December and concluding in 3 to 6 weeks, the Winternship is tailored for impactful engagement. Transform your skills into tangible, real-world projects and seamlessly integrate them into high-impact solutions—Winterns will be paid $2,500 following program completion.

Projects should be short-term, achievable within the Wintership duration, and focused on cybersecurity. After the project concludes, project materials must be open-source code under a permissive license (e.g., Apache2) hosted on Trail of Bits' Github organization. Explore past internship programs on our our blog or podcast for inspiration!

Please select which teams you are interested in working with on the application.

During your winternship, you’ll collaborate with experts, gain valuable insights, and make an impact using the latest technology. Our winterns enjoy the flexibility of our program, while exercising creativity and problem solving skills on a project.  Check out some of the work from past programs here and here.

• Currently or recently enrolled in an undergraduate or graduate degree program.
• Available for at least three weeks between December 8, 2025 and January 30, 2026.
• Legally eligible to work in the United States either currently or upon graduation.

Preferred Qualifications (Nice to have, but not required. Please apply even if you don’t meet all of these!)

• Participated in CTFs
• Experience with reverse engineering
• Built AI applications
• Used AI in cybersecurity settings