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Cloud object storage

Review cloud storage and service access through attributable ownership, least privilege, destination policy, and auditable configuration.

Guide 13 / 154 review notesUpdated 2026-10-11
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The review

What to look for

Defensive study and review of artifacts supplied by their owner. Record missing evidence as an open question.

  1. Establish ownership

    Tie each bucket, service identity, and integration to a documented account, environment, and responsible owner before drawing conclusions.

  2. Review effective policy

    Evaluate identity, resource, network, and conditional policies together for the exact action and tenant context.

  3. Constrain service egress

    Apply an explicit destination policy plus independent network controls for server-side requests.

  4. Audit change paths

    Ensure configuration changes, public sharing, and credential rotation leave reviewable records and safe defaults.

What to produce

  • Attributed asset inventory
  • Effective-permission review
  • Egress and audit controls

Common mistakes

  • Calling an internet-visible asset owned without attribution
  • Reviewing IAM policies in isolation
  • Using a network control as the only destination check

Continue the study

Reading & source context

Editorial notes above connect these references. Open each record for its original source and review date.

AWS IAM security best practices for workload identitiesAmazon Web Services OWASP Server-Side Request Forgery PreventionOWASP Cheat Sheet Series NIST SP 800-190: Application Container Security GuideNational Institute of Standards and Technology

Visual models

A requested destination passes consistent parsing, application policy and independent network egress checks. Invalid input or either policy failure is rejected. Only an approved destination is requested.Layer server-request destination controls ↗A verified workload identity and a requested operation enter an independent authorization decision. Policy checks the role, action, resource and tenant together. Only the approved resource scope is allowed; other requests are denied. Both decisions produce an audit record.Keep workload authority tenant-scoped ↗

Connected disclosures

Shopify Exchange screenshot service crossed internal boundariesShopify Meta service-identity exposure amplified by excessive secret accessMeta Actifio driver execution exposed excessive shared-service authorityGoogle

From the field toolkit

Cloud storage and public object huntingplaybooks ↗Cloud metadata boundaryplaybooks ↗Cloud / SaaS extraschecklists ↗cloud_enumtools ↗s3scannertools ↗

Guide by GK Data · Research snapshot 2026-10-04.
Sources and review dates are preserved in the library provenance.

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