[AI Cloud Service Vercel Discloses Security Incident: Unauthorized Access to Internal Systems, Some Users Affected] AI cloud infrastructure provider Vercel announced a security incident in April 2026, stating that some of its internal systems were accessed without authorization. The company is currently conducting an ongoing investigation and has brought in a professional incident response team to assist in handling the situation. Additionally, law enforcement agencies have been notified. To mitigate potential risks, Vercel recommends all users review their environment variable configurations and utilize the sensitive environment variable feature to enhance security measures. Vercel disclosed that only a small number of users have been affected, and the team is communicating with those users individually. Overall services remain operational as usual.