The US government has lifted its two-week ban on Anthropic’s Fable 5 AI model, making it available worldwide again after addressing a security vulnerability that allowed it to be ‘jailbroken’. The model was restricted due to its ability to identify software vulnerabilities and produce code to exploit them. Anthropic has since trained a new filter to block such requests, but it also flags harmless programming tasks more often. Why it matters: this incident highlights the ongoing challenges of ensuring AI safety and security, and the need for industry-wide standards to address these issues.