FRANKFURT, April 15 : European Central Bank supervisors are set to quiz bankers about the risks that Anthropic's new artificial intelligence model might supercharge cyberattacks, one source familiar with the situation told Reuters on Wednesday. Anthropic's Mythos is seen by cybersecurity experts as ​posing significant challenges to the banking industry and its legacy technology systems, raising alarm bells among regulators in Britain and the U.S. ECB supervisors are gathering information about