What it means
Object storage is durable, scalable, and easy to integrate, which also makes it a common source of accidental public exposure and large-scale data access.
Why it matters
Security depends on identity, resource policy, organization guardrails, network paths, data classification, logging, and recovery—not only a public-or-private switch.
Practical focus
- Block public access by default
- Use narrowly scoped identities and resource policies
- Enable versioning, retention, and access logging where justified
- Discover sensitive data and review sharing continuously
Common mistakes
- Relying on legacy ACLs without understanding policy interaction
- Using one bucket for unrelated trust levels
- Deleting exposed objects without investigating access
Certification relevance
This subject appears in or supports the following certification bodies of knowledge: