Keri Warr
Implementing SL4/5 and searching for differentially defense-favored security tools.
Stream overview
Developing techniques and technologies to enable SL4 and SL5 cybersecurity postures for LLMs, such as hardware and software supply chain management, confidential computing, weight exfiltration prevention, ML compute cluster security, and AI-powered insider threat detection.
Mentors
Technical Lead of the Infrastructure Security Engineering Team @ Anthropic. Implementing SL4/5 and searching for differentially defense-favored security tools.
Mentorship style
I love asynchronous collaboration and I'm happy to provide frequent small directional feedback, or do thorough reviews of your work with a bit more lead time. A typical week should look like either trying out a new angle on a problem, or making meaningful progress towards productionizing an existing approach.
Representative papers
https://arxiv.org/abs/2511.02620
Scholars we are looking for
Essential:
- Excited about doing Security Engineering work in partcular
- Non-zero experience in all three of: Software engineering, Cybersecurity, and Machine Learning
- Ability to quickly unblock yourself
- Willing to trade off against how shiny your project is in favor of doing work that will be impactful within the next 12 months
Preferred:
- Significant depth in at least two of: Software engineering, Cybersecurity, or Machine Learning
- Excited about delivering working open source code in addition research papers
Can independently find collaboraters, but not required.
Project selection
Mentor(s) will talk through project ideas with scholar, or scholar will pick from a list of projects.
Community at MATS
MATS Research phase provides scholars with a community of peers.
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During the Research phase, scholars work out of a shared office, have shared housing, and are supported by a full-time Community Manager.
Working in a community of independent researchers gives scholars easy access to future collaborators, a deeper understanding of other alignment agendas, and a social network in the alignment community.
Previous MATS cohorts included regular lightning talks, scholar-led study groups on mechanistic interpretability and linear algebra, and hackathons. Other impromptu office events included group-jailbreaking Bing chat and exchanging hundreds of anonymous compliment notes. Scholars organized social activities outside of work, including road trips to Yosemite, visits to San Francisco, and joining ACX meetups.