Joshua Saxe leads Meta's efforts to integrate security into its large language models (LLMs) and to utilize AI for the security of Meta's billions of users. Before joining Meta, he served as chief scientist at Sophos, principal investigator on multiple DARPA programs at Two Six Labs and led machine learning security research at Applied Minds. Joshua co-authored the book "Malware Data Science" with Hillary Sanders, published by No Starch Press. He has authored dozens of scientific papers and patents on security AI and has presented at numerous conferences, including Defcon, Blackhat and RSA.