Hacker NewsWednesday · May 20, 2026FREE

Peter Neumann has died

The computing community is mourning the death of Peter G. Neumann, a distinguished computer scientist whose career spanned decades, focusing primarily on computer security and system reliability. Neumann was a principal scientist at SRI International and, most notably, the long-time editor of the RISKS Digest, an online forum dedicated to discussing computer-related risks, vulnerabilities, and failures. This digest, which he curated since its inception in 1985, became an essential resource for professionals seeking to understand and prevent software and hardware-related incidents. His meticulous curation and insightful commentary in the RISKS Digest provided a unique platform for sharing real-world security incidents and fostering critical thinking about system design flaws. His work at SRI included significant contributions to the development of secure operating systems, such as the Provably Secure Operating System (PSOS), and pioneering research into formal verification methods. These efforts influenced generations of researchers and practitioners in the pursuit of more robust and trustworthy computing systems. The announcement, shared via a TUHS mailing list on May 19, 2026, highlights the profound impact Neumann had on shaping the discourse around secure computing practices. His consistent emphasis on rigorous analysis, the ethical implications of technology, and the importance of learning from past mistakes has left an indelible mark on the field, fostering a culture of critical examination within software development and system administration globally. His legacy underscores the ongoing need for vigilance in an increasingly complex digital landscape.