Facebook owner Meta says an issue during an evaluation by an independent testing company allowed one of its artificial intelligence (AI) models to connect to the internet and hack another organisation's system. The announcement follows recent incidents across the AI industry, including breaches by OpenAI and Anthropic models, that have raised cyber-security concerns. A Meta spokesperson told the BBC that it was investigating the hack, which it attributed to a "misconfiguration" similar to previously reported incidents at other firms. Meta said the security trials were conducted by Irregular, the same AI security vendor that carried out tests for Anthropic's AI model that had gained access to three other companies' systems. OpenAI and Anthropic are preparing blockbuster stock market listings that are expected to value each firm at around $1tn (£740bn).