Organisations should move shared credentials into a centrally managed password system with role-based access, auditing, and encryption. Spreadsheets, documents, browser stores, and notebooks create uncontrolled exposure and make collaboration depend on unsafe channels like email or chat. A secure vault reduces breach risk, improves accountability, and gives IT visibility into who can access shared accounts.
Why This Matters for Security Teams
Shared spreadsheets and documents turn passwords into uncontrolled collaboration artifacts. The immediate problem is not just leakage, but the absence of ownership, auditability, and revocation when staff change roles or leave. Once a credential is copied into email, chat, or ad hoc files, access paths multiply and incident response becomes guesswork. NHI Management Group notes that 96% of organisations store secrets outside of secrets managers in vulnerable locations, and 79% have experienced secrets leaks, with 77% causing tangible damage in the Ultimate Guide to NHIs.
The security issue is especially acute because business teams often treat shared passwords as a convenience layer for legacy accounts, vendor portals, or service inboxes. That practice creates a hidden identity problem: the credential is effectively a shared non-human identity with no clear lifecycle controls. NIST guidance on access control and auditing, including NIST SP 800-53 Rev 5 Security and Privacy Controls, reinforces the need for accountability and traceable use. In practice, many security teams encounter credential sprawl only after an offboarding event, not through planned governance.
How It Works in Practice
The replacement pattern is straightforward: move shared passwords into a centrally managed vault, then use role-based access, approval workflows, logging, and encryption to control who can retrieve them. The vault should become the system of record, not a copy target. For business users, that usually means access through a secure portal or delegated sharing model rather than exporting secrets into files. For IT and security teams, the operational gain is that access can be reviewed, rotated, and revoked without searching personal drives or chat history.
Good implementations also separate the password store from the human workflow. A modern secrets process should support:
- Named ownership for each shared credential or account
- Least-privilege access based on business role, not convenience
- Multi-factor authentication for vault access
- Full audit logs showing who viewed, used, or shared a secret
- Rotation after staff changes, incidents, or vendor transitions
This is the same governance direction covered in the Ultimate Guide to NHIs, especially where shared credentials behave like unmanaged NHI assets. When the credential is tied to a service or integration, treat it as an identity with lifecycle controls, not as a note in a document. External guidance from NIST SP 800-53 Rev 5 Security and Privacy Controls supports access enforcement, auditability, and account management as core safeguards. Where teams need a real-world example of poor secret handling at scale, the Google Firebase misconfiguration breach illustrates how exposed configuration and credential handling can turn into broad data exposure quickly. These controls tend to break down when business units keep local copies of credentials for speed because the vault is not integrated into daily access workflows.
Common Variations and Edge Cases
Tighter password governance often increases operational friction, so organisations have to balance security with the need for fast collaboration. That tradeoff is real in shared vendor accounts, emergency access scenarios, and small teams that rely on legacy systems without granular user management.
Current guidance suggests three common exceptions need special handling. First, emergency access should use break-glass accounts with strong monitoring rather than circulating a permanent shared password. Second, vendor or third-party access should use time-bound sharing, not permanent file-based storage. Third, where a system cannot support individual accounts, the shared credential should still live in the vault with clear ownership, rotation, and alerting.
Best practice is evolving toward removing shared passwords altogether where possible, but there is no universal standard for that yet across all business applications. The practical goal is to eliminate uncontrolled copies, not to pretend every legacy workflow can be redesigned overnight. NHI Management Group’s research on secrets leakage in the Ultimate Guide to NHIs shows why cleanup matters: once secrets are distributed into documents, control weakens faster than most teams can track it. Organisations that still rely on file sharing for access should treat that as a temporary exception, not a policy destination.
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 address the attack and risk surface, while NIST CSF 2.0, NIST SP 800-63, NIST Zero Trust (SP 800-207) and NIST AI RMF set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-03 | Shared password files create unmanaged secret sprawl and weak lifecycle control. |
| NIST CSF 2.0 | PR.AC-1 | Access control is central when replacing ad hoc password sharing with governed access. |
| NIST SP 800-63 | Identity assurance matters when users retrieve sensitive shared credentials. | |
| NIST Zero Trust (SP 800-207) | AC-4 | Zero trust supports least privilege and continuous enforcement for credential access. |
| NIST AI RMF | GOVERN | Governance applies to credential handling workflows and accountability. |
Assign and enforce controlled access to shared credentials through approved identity workflows.
Related resources from NHI Mgmt Group
- How do organisations reduce risk from shadow applications without losing business agility?
- How should security teams manage shared social media account access without relying on password sharing?
- What breaks when organisations try to manage unmanageable applications with only password managers or network controls?
- How should organisations manage shared access to social media accounts without losing control when employees or agencies leave?
