Vercel disclosed a security incident involving unauthorized access to its internal systems, affecting a limited number of customers.

The web hosting platform published a security bulletin on April 19, urging all users to review their environment variables immediately.

What Happened at Vercel

According to Vercel’s official statement, attackers gained unauthorized access to certain internal systems. The company has engaged incident response experts and notified law enforcement.

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Developer Theo Browne shared additional details, noting that Vercel’s Linear and GitHub integrations bore the brunt of the attack.

However, environment variables marked as “sensitive” within the…