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S3 Compatibility Doesn't Guarantee S3-Level Security

Security researchers at Wiz recently examined S3-compatible object storage services across six popular neoclouds, revealing significant security gaps compared to Amazon S3.

  • S3-compatible services lack AWS-level security
  • Nebius and Cloudflare R2 allow public buckets but block anonymous object listing
  • Wiz investigation found unauthorized privilege escalation and broken tenant isolation

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