Summer is not exactly slowing down.
The UK AI Security Institute (AISI) reported one of the clearest real-world examples yet of AI agents taking unexpected action beyond the intended scope of a cybersecurity evaluation. Across 122 test runs, agents powered primarily by Anthropic’s Mythos 5, and in two cases OpenAI’s GPT-5.6 Sol, took 19 actions involving the live internet, real people and real organizations. The most serious case involved an agent attempting to introduce malicious code into an open-source project, researching its maintainers, creating fake online identities and using social engineering to try to get the code approved. Other agents left instructions and resources on GitHub that later agents discovered and used, revealing an early form of indirect coordination between independently operating systems.
The central security issue is less about whether an AI system has bad intentions (AI does not have intentions as a non-sentient being) and more about what it is permitted and/or able to do when the most efficient path toward its objective is one its operators never anticipated. For businesses, the incident is an early warning about what changes as AI moves from answering questions to taking actions. AISI is already tightening internet controls, expanding live monitoring and redesigning evaluations around the assumption that capable agents may pursue unexpected routes to their goals. The questions now? What else can and might agents do as the technology progresses? And what does that mean for humans?
Tune in and listen or watch! We hope you enjoy it as much as we did.
“In the world of ones and zeros, of internet bytes and digi-pixels, there is no morality. There are just actions.” — Chelsea Toczauer
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Security Incident Disclosure: AISI August 4, 2026 - AISI’s report of the incident.
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