AI developers have "no excuse" for getting data privacy wrong, one of the heads of the UK's data regulator has said, warning those who don't follow the law on data protection will face consequences. The Information Commissioner's Office (ICO) enforces data protection in the UK. Speaking amid the explosion of interest in generative AI, especially Large Language Models like the one that powers OpenAI's ChatGPT, Stephen Almond, the ICO's executive director of regulatory risk, warned LLMs posed a risk for data security. Writing in a blog post, he argued it is time to "take a step back and reflect on how personal data is being used". He noted that Sam Altman, the CEO of ChatGPT creator OpenAI, has himself declared his own worries about AI advances and what they could mean.