The AI Security Catch 22: A Pattern Emerges A British government agency has discovered vulnerabilities in OpenAI's GPT 5. 6 model that are similar to those found in Anthropic's Fable 5 model just a few months ago.
The U. K. AI Security Institute (AISI) found that GPT 5. 6 is susceptible to "universal jailbreaks," which can unlock cyber capabilities such as autonomous exploit development and vulnerability discovery.
The vulnerabilities were discovered relatively easily by AISI researchers, who had privileged access to GPT 5. 6's inner workings.