Episode Details

Daily Cyber News: Cloudflare isolation failure exposed residual cross-customer data

Cloud customers faced a potential cross-tenant data leak because reused storage blocks were not fully cleared. A Workers Paid customer could have recovered residual files from previous Containers or Sandboxes running on the same physical host. During testing, residual material appeared on 18 of 24 placements and 20 of 22 nodes.

Key context: The issue crossed a core tenant-isolation boundary.

Additional detail: For leaders, shared-cloud assurance needs to include data-remanence controls, not just logical access policies.

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Topics: cybersecurity news, cybersecurity, cyber risk, Cloudflare, isolation, failure, exposed, residual, cross-customer, data.