What are common mistakes with everyone permissions?

Common mistakes are granting everyone permissions by default, using them for convenience, and failing to review inherited access after the original need has passed. This can expose sensitive files to the whole organisation or to large groups that do not need them. Restrict broad permissions, document exceptions, and periodically recertify access on shared locations.

Why everyone permissions become a problem fast

“Everyone” permissions are broad by design, so the common mistake is treating them as harmless convenience instead of a high-blast-radius access decision. Once a shared folder, share point, or repository is opened to everyone, the control shifts from intentional access to default exposure, and later cleanup is often forgotten.

That is why the issue is usually not the permission model itself, but how it is used. A broad grant may be acceptable for a short-lived business need, but it becomes risky when it turns into a permanent shortcut, especially for files that include operational data, financial records, customer information, or internal plans.

In practice, the mistake is often compounded by inheritance. Access granted at a parent location can silently flow to many child folders or objects, so a single convenience decision can expose far more data than the person making the change expected.

Where broad access most often goes wrong

The first failure mode is defaulting to “everyone” because it is faster than creating a smaller group. That usually means the access decision is made for workflow speed rather than data sensitivity, which is exactly how sensitive files end up sitting in broadly reachable locations.

The second failure mode is using broad permissions for temporary collaboration and then never tightening them. Teams often create a shared location for a project, an incident, or a migration, but the access remains after the original need has passed. Data Security Guide is a useful reference point here because it frames over-permissioned data and open shares as a data exposure problem, not just an administrative one.

The third failure mode is failing to understand effective access. Users may not only inherit direct rights, they may also gain access through nested groups, synced identities, service accounts, or upstream role assignments. That makes periodic review essential, because the visible permission list is not always the full exposure picture.

Convenience also encourages repetition. Once one folder is set to everyone, the pattern gets copied into other locations, and access sprawl becomes normalised. Authorisation Models Guide helps explain why coarse access patterns age badly compared with role, attribute, or relationship based controls.

How to reduce exposure without slowing the business down

Broad permissions should be treated as an exception path, not a default operating model. The practical fix is to reserve them for cases where the audience is genuinely large and the data is low sensitivity, then document why the exception exists and when it should expire.

For shared content, the most useful control is a regular recertification cycle that checks both the folder and the data inside it. If the business owner cannot explain why broad access still exists, the permission should be narrowed or removed. Privileged Access Management Guide is relevant because the same discipline of scoped access, review, and removal applies whether the target is a privileged system or a shared data location.

When the object is sensitive or widely used, a better pattern is to give broad read access to a sanitized copy and keep the sensitive source restricted. That preserves usability while avoiding unnecessary exposure of the original data set, which is usually the safer compromise than open access to the live source.

If a location has already been opened too widely, fix the inheritance chain first, then review direct grants, then check whether any downstream systems copied or cached the same content. Top 10 Secrets Management Mistakes reinforces the same operational lesson: once sensitive material is broadly exposed, the cleanup problem is often bigger than the original configuration mistake.

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, NIST SP 800-53 Rev 5 and OWASP ASVS 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	Broad 'everyone' permissions are an access control failure that CIS-6 directly addresses.
Recommendation — Restrict shared access to least privilege and review broad permissions regularly.
NIST SP 800-53 Rev 5	AC-6 — Least Privilege	Everyone permissions expand access beyond business need, which AC-6 is meant to prevent.
Recommendation — Apply least privilege and remove access that no longer has a defined need.
ISO/IEC 27001:2022	A.5.15 — Access control	Open shared permissions are an access control governance issue covered by Annex A access control requirements.
Recommendation — Define and enforce access rules for shared locations and document exceptions.
OWASP ASVS	V8 — Authorization	Over-broad access is an authorization design and review problem, especially for shared content and applications.
Recommendation — Enforce authorization boundaries so broad access is an exception, not a default.
OWASP Non-Human Identity Top 10	NHI-05 — Overprivileged NHI	The same overprivilege pattern applies when shared access belongs to non-human identities and service principals.
Recommendation — Right-size non-human access and recertify it before inherited permissions become excessive.

Practitioner Guidance

What to prioritise: Start with the locations that hold the most sensitive or most copied content, because those are the permissions most likely to create repeated exposure. A broad grant on a low-value folder is a nuisance; a broad grant on a finance, HR, or engineering repository can become a reportable incident.

What to verify: Check effective access, not just the obvious permission entry. Confirm whether inheritance, nested groups, guest users, synced identities, or downstream sharing links are widening the audience beyond what the owner intended.

Common mistake: Teams often review only the group name and ignore the contents and lifetime of the share. The safer test is simple: if the original business need has ended, the exception should end too.

Practitioner takeaway: The real control is not avoiding every broad permission, it is proving that any broad permission is deliberate, time bound, and reviewed before it becomes permanent exposure.