Everyone Permissions are access settings that grant a file, folder or resource to all users in a domain or environment, rather than to named groups. They often create unintended broad exposure. Defenders should search for these permissions, replace them with role-based groups, and verify that inherited access does not reopen the resource.
What Everyone Permissions Are and Why They Matter
Everyone permissions are broad access settings that make a file, folder, or resource available to all users in an environment instead of limiting access to a named group. That convenience is exactly what makes them dangerous: they often become invisible overexposure.
In practice, this pattern usually appears when teams want fast sharing or temporary convenience and never come back to tighten the scope. Once created, the permission can outlive the business need that justified it.
How Everyone Permissions Create Excessive Exposure
The core problem is not just that the access is broad, but that it bypasses the normal discipline of role design. A permission granted to “everyone” usually ignores job function, ownership boundaries, and the principle of least privilege.
That can expose sensitive documents, configuration files, internal data stores, or collaborative workspaces to users who should never have seen them. It also increases the chance that inherited or nested permissions quietly reopen a resource after a cleanup effort, so review has to consider both direct grants and inherited access paths.
Common Causes and Visibility Gaps
Everyone permissions often persist because they are easy to miss in large environments. Administrators may focus on explicit group membership while overlooking shared folders, default templates, inherited ACLs, or legacy resources that still carry a broad grant.
They also survive because ownership is unclear. If no one is responsible for reviewing a share, a drive, or a cloud resource, the permission can remain in place long after the original project ended. The result is a slow drift from intended access to ambient exposure.
Why Security Teams Replace Them With Role-Based Access
The safer alternative is to map access to named roles or groups that reflect business function, then validate that the resulting permissions still match actual need. That shift makes access review practical because the question becomes “who needs this role?” rather than “why does everyone have this resource?”
For broader data-access hygiene, teams should also compare the permission model against surrounding exposure controls, especially when files or shared repositories contain regulated or operationally sensitive material. NHIMG’s Data Security Guide covers how broad sharing, shadow data, and over-permissioned resources fit into a larger data protection programme.
Where broad access exists because permissions were inherited from a cloud or directory control path, the fix often requires tightening the upstream role model, not just changing a single share. The same least-privilege logic applies when access is granted through a platform role instead of a file ACL.
That is why access cleanup is most effective when it is paired with a permissions model that can be reviewed, recertified, and revoked without guesswork.
Risk and Threat Considerations
Everyone permissions create an exposure pattern that attackers, insiders, and accidental users can all exploit. If a sensitive resource is broadly readable or writable, the main failure is not subtle, it is that the access boundary no longer matches the sensitivity of the asset.
Failure mechanism: A broad grant, inherited ACL, or default share exposes data or controls to users outside the intended audience, and the overexposure may persist even after local cleanup if upstream inheritance is left untouched.
Impact: The result can be data disclosure, unauthorized modification, lateral discovery of additional resources, and a larger blast radius when one account, share, or folder is compromised.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 addresses the attack surface, CIS Controls v8 and NIST SP 800-53 Rev 5 set the technical controls, and ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| CIS Controls v8 | CIS-6 — Access Control Management | Everyone permissions are an access control hygiene issue that requires periodic review and restriction. |
| Recommendation — Review and remove broad resource permissions, then enforce named-group access aligned to job roles. | ||
| NIST SP 800-53 Rev 5 | AC-6 — Least Privilege | Broad 'everyone' access directly conflicts with least-privilege access limitation. |
| AC-3 — Access Enforcement | The term is about enforcing who may access a resource and preventing unintended broad access. | |
| Recommendation — Limit resource access to the minimum set of authorized users and groups. Enforce authorization decisions so only approved identities can access the resource. | ||
| ISO/IEC 27001:2022 | A.5.15 — Access control | Everyone permissions are a direct access-control governance problem under Annex A. |
| Recommendation — Define and apply access control rules that prevent broad default exposure. | ||
| OWASP Non-Human Identity Top 10 | NHI-05 — Overprivileged NHI | Broad permissions mirror the overprivilege pattern when non-human or shared access is in play. |
| Recommendation — Right-size permissions so accounts and service identities do not inherit excessive access. | ||
Practitioner Guidance
What to watch for: Treat “everyone” style permissions as a review trigger, not a convenience feature. They are especially risky on resources that hold sensitive files, operational data, or any content that could be reused across teams without a clear business justification.
Governance implication: Ownership should be explicit, and review should include inherited access as well as direct grants. If the resource cannot be explained as safe for the whole environment, the permission model is probably too broad.
Practitioner takeaway: Replace broad grants with named roles or groups, then verify the resource stays closed after inheritance and nested access are accounted for.