Vercel says its internal systems were accessed via a compromised third-party AI tool, after a user with a ShinyHunters handle claimed a breach on BreachForums

Vercel has disclosed a security incident after detecting unauthorized access to its internal systems. The disclosure follows claims by a threat actor operating under the ShinyHunters handle on BreachForums.

The hacker alleged they breached Vercel's systems and attempted to sell stolen data on the notorious cybercrime forum. Vercel acknowledged the unauthorized access but has not detailed the full scope of what was compromised.

ShinyHunters is a well-known handle in breach circles, previously linked to high-profile data theft operations. BreachForums remains a go-to marketplace for threat actors looking to monetize stolen information.

The cloud development platform, widely used by developers for frontend deployment and serverless functions, has not yet shared specifics on what data may have been accessed or how many users could be affected.