The news-rating group NewsGuard has found dozens of news websites generated by AI chatbots proliferating online, according to a report published Monday, raising questions about how the technology may supercharge established fraud techniques.

The 49 websites, which were independently reviewed by Bloomberg, run the gamut. Some are dressed up as breaking news sites with generic-sounding names like News Live 79 and Daily Business Post, while others share lifestyle tips, celebrity news or publish sponsored content. But none disclose that they’re populated using AI chatbots such as OpenAI’s ChatGPT and potentially Alphabet’s Google Bard, which can generate detailed text based on simple user prompts. Many of the websites began publishing this year as the AI tools began to be more widely used.

In several instances, NewsGuard documented how the chatbots generated falsehoods for published pieces. In April, a website called published an article titled, "Biden dead. Harris acting President, address 9 a.m.” Another concocted facts about the life and works of an architect as part of a falsified obituary. And a site called TNewsNetwork published an unverified story about the deaths of thousands of soldiers in the Russia-Ukraine war, based on a YouTube video.