The Global Namespace Risk: Universal Bucket Hijacking Technique for Cloud Data Exfiltration

A universal bucket hijacking technique has been identified that exploits the global uniqueness of cloud storage bucket names across major cloud providers including Google Cloud, AWS, and Microsoft Azure. Attackers with permissions to delete a storage bucket can recreate it under their control, redirecting data streams such as logs, Pub/Sub messages, and storage transfers to their own environment, leading to silent data exfiltration. While no active exploitation has been observed, the architectural flaw enables long-term, undetectable compromise of sensitive data if proper IAM controls and monitoring are not in place.

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