Cybercriminal Group Weaponizes Claude and Grok to Attack 400+ Latin American Banks

A Mexican cybercrime organization known as CyberCartel deployed a network of AI agents powered by Anthropic's Claude and xAI's Grok to automate attacks on more than 400 Latin American financial institutions, according to security research disclosed by The Information on October 21, 2026. The attack system, named CARLIY0S, represents one of the first documented cases of AI models being systematically misused at scale for coordinated financial cybercrime, with the group stealing credentials and account access details from banks and payment service providers across the region.