Shared accounts security for MSPs: why passwordless matters

At a glance

What this is: This piece argues that MSPs can secure shared-account access by removing shared passwords while preserving the workflows clients still rely on.

Why it matters: It matters because shared accounts sit at the intersection of human IAM, operational continuity, and access governance, and MSPs need controls that improve accountability without breaking legacy dependencies.

👉 Read Secret Double Octopus's guidance on securing shared accounts without shared passwords

Context

Shared accounts are a governance problem as much as an authentication problem. In client environments, they often exist because operations need speed, continuity, shift coverage, or backup access, but the moment one credential is used by many people, attribution and offboarding become materially weaker.

For MSPs and MSSPs, the key question is not whether shared accounts should disappear overnight. It is how to make access individually verifiable, auditable, and manageable while maintaining the business workflows that depend on them.

Key questions

Q: What breaks when multiple people use the same shared account password?

A: The main failure is accountability. Logs show the account, not the person, so audit evidence, incident response, and offboarding all become weaker. Shared passwords also expand the chance of reuse, phishing, and informal sharing. The safer pattern is to keep the account only when necessary and remove user knowledge of the secret.

Q: Why do shared accounts create more governance risk in MSP environments?

A: MSPs inherit the operational and compliance burden of proving access control across many client workflows. When one secret is reused across workers, shifts, or contractors, the provider cannot easily show who accessed what. That makes shared-account governance a lifecycle and evidence problem, not just a login problem.

Q: How can security teams reduce risk without redesigning legacy shared workflows?

A: They can place strong identity verification in front of the shared account and keep the backend password hidden from users. That preserves the workflow while removing the weakest control, which is secret distribution. Teams should also map each shared account to an owner, purpose, and review cycle.

Q: What should organisations review first when shared accounts are still necessary?

A: Start with the highest-risk shared accounts used for admin, support, contractor, or emergency access. Then verify that each one has a named business owner, approved user list, and offboarding trigger. If those three elements are missing, the account is operationally convenient but governance-poor.

Technical breakdown

Why shared passwords break accountability and audit trails

A shared account can still be useful operationally, but a shared password removes the ability to tie action to a person. Once multiple users know the same secret, logs only show the account, not the individual behind the session. That weakens audit evidence, complicates incident response, and creates a support burden when passwords are reset, rotated, or lost. In practice, the password becomes the control failure, not the account itself. Practical implication: preserve the account where needed, but remove user knowledge of the credential.

Practical implication: preserve the account where needed, but remove user knowledge of the credential.

How passwordless shared-account access works

The pattern described here places strong authentication in front of shared-account access. Users prove their identity with phishing-resistant methods such as passkeys, smart cards, biometrics, or approved OTP flows, while the backend shared credential remains hidden from the user. That means the system can grant access to the shared resource without requiring the person to know, type, or manage the password. This is different from simply storing or rotating a shared secret more safely. Practical implication: design the access path so the user authenticates as themselves, while the shared account stays opaque.

Practical implication: design the access path so the user authenticates as themselves, while the shared account stays opaque.

Where MSPs should separate passwordless from PAM

Traditional PAM centres on vaulting, checkout, rotation, and recording of privileged credentials. That model fits high-risk administrative access, but shared workforce accounts often need a different pattern because the objective is to eliminate password exposure rather than broker credential use. MSPs should treat these as related but distinct governance problems. Shared account access needs individual verification, central policy, and usable audit evidence without forcing application redesign. Practical implication: choose the control model based on whether the priority is privileged checkout or passwordless shared access.

Practical implication: choose the control model based on whether the priority is privileged checkout or passwordless shared access.

Threat narrative

Attacker objective: The objective is to obtain usable access that blends into legitimate shared-account activity while avoiding attribution to a specific person.

1. Entry occurs when multiple users share one password across workstations, service desks, legacy applications, or temporary workflows, creating a credential that can be copied, phished, reused, or written down.
2. Escalation follows when that shared secret gives an unauthorised person the same effective access as the intended user, with no reliable way to distinguish one session from another.
3. Impact is loss of accountability, weaker offboarding, more support overhead, and a higher chance that client access can be abused without a defensible audit trail.

Breaches seen in the wild

• Coupang Signing Key Breach — Unrevoked signing key credentials expose 33.7 million records after employee offboarding failure at Coupang.
• MongoBleed breach — MongoBleed exposed secrets across 87K MongoDB servers.

Read our 52 NHI Breaches Analysis report for a comprehensive view of breaches impacting Non-Human Identities including AI Agents.

NHI Mgmt Group analysis

Shared-account risk is fundamentally an attribution problem, not just a password problem. When multiple people use the same credential, the control plane cannot reliably answer who did what and when. That breaks auditability, complicates evidence collection, and turns offboarding into a brittle credential-change exercise rather than a lifecycle process. The practitioner conclusion is simple: if identity cannot be attributed, governance is incomplete.

ZeroPassword-style access changes the control objective from secret sharing to identity verification. The value is not that the password is better protected in storage, but that the user never needs to handle it at all. That aligns shared-account access with modern IAM expectations while preserving operational workflows that clients still depend on. The practitioner conclusion is to treat password exposure as the failure mode, not the presence of a shared account alone.

Shared-account governance should be measured by visibility and revocation, not by the number of credentials vaulted. A client can have fewer obvious password issues and still lack meaningful evidence about who accessed an operational account. This is where MSPs need stronger access attribution, centralized policy, and offboarding that actually removes human access paths. The practitioner conclusion is to validate control outcomes, not just control presence.

Identity lifecycle discipline applies to shared accounts exactly as it does to human users. Joiner-mover-leaver events, contractor access, and emergency access all create churn around who should be able to use the account, even if the account itself persists. The governance question is whether access rights change cleanly as people change roles or leave. The practitioner conclusion is to map shared-account access to lifecycle ownership, not informal operational convenience.

Shared-account access is a useful bridge case for MSPs, but it should not become a permanent exception. It can be the right starting point where legacy systems, shift work, and operational constraints block per-user redesign. But the long-term goal should still be fewer shared identities, clearer attribution, and stronger policy boundaries. The practitioner conclusion is to use shared-account controls as a stepping stone toward better identity governance, not an excuse to leave the model untouched.

From our research:

• The average estimated time to remediate a leaked secret is 27 days, despite 75% of organisations expressing strong confidence in their secrets management capabilities, according to The State of Secrets in AppSec.
• Only 44% of developers are reported to follow security best practices for secrets management, exposing a significant developer behaviour gap, according to GitGuardian & CyberArk.
• For lifecycle-heavy programmes, review Ultimate Guide to NHIs , Lifecycle Processes for Managing NHIs to align revocation, rotation, and offboarding with shared-access governance.

What this signals

Shared-account governance will increasingly be judged by attribution quality, not by whether a password vault exists. MSPs that can prove individual verification and clean offboarding will have a stronger story than those relying on generic credential storage. The operational bar is moving toward auditable identity, not merely protected secrets.

Ephemeral credential trust debt: when access is technically available but operationally difficult to attribute, organisations accumulate hidden governance debt. That debt surfaces during incidents, audits, and staff changes, which is why shared-account controls should be measured as lifecycle controls, not convenience features.

As shared access expands across legacy and hybrid estates, practitioners should expect stronger pressure to align passwordless controls with IAM evidence requirements, including access reviews and revocation proof. The teams that connect shared-account access to lifecycle ownership will be better positioned for auditability and client trust.

For practitioners

• Separate shared-account governance from shared-password handling Inventory which client workflows genuinely require shared accounts, then remove user knowledge of the backend password wherever the workflow must remain. Preserve the account only where operational continuity depends on it.
• Require individual verification before shared access is granted Place phishing-resistant authentication in front of the shared account so every session is tied to a specific person, even when the resource itself remains shared.
• Document who can use each shared account and why Maintain an access register that ties each shared account to approved users, business purpose, and review owner so auditors can test accountability, not just credential storage.
• Align offboarding with shared-account exposure points When a contractor, temporary worker, or technician leaves, review every shared workflow they could access and remove their eligibility before the next operational handoff.

Key takeaways

• Shared accounts are not automatically the problem, but shared passwords are because they erase individual accountability.
• The practical risk is not only security exposure, but also audit failure, support overhead, and weak offboarding evidence.
• MSPs should keep required workflows intact while moving access control toward individual verification and passwordless operation.

Key terms

• Shared Account: A shared account is one identity used by multiple people for a common workflow. It can support operational continuity, but it weakens attribution, offboarding, and audit evidence because the account no longer maps cleanly to one person.
• Passwordless Authentication: Passwordless authentication verifies a user without requiring them to type or manage a reusable password. In shared-account scenarios, it shifts control from secret sharing to person-level authentication, which preserves access while reducing exposure of the underlying credential.
• Access Attribution: Access attribution is the ability to determine which person performed an action under a given account. It is a core governance requirement for investigations, compliance evidence, and accountability, and it becomes fragile when passwords are shared across users.
• Lifecycle Offboarding: Lifecycle offboarding is the process of removing access when a person leaves a role, contractor engagement, or support relationship. For shared accounts, it means eliminating eligibility and revoking access paths that were granted for a specific operational need.

What's in the full article

Secret Double Octopus's full blog post covers the operational detail this post intentionally leaves for the source:

• Deployment examples across shared workstations, legacy applications, and remote access workflows
• How the ZeroPassword approach fits alongside existing authentication and directory infrastructure
• Operational arguments for reducing password reset tickets and improving attribution evidence
• The source's discussion of when shared accounts remain necessary in regulated and legacy environments

👉 The full Secret Double Octopus post covers MSP use cases, workflow examples, and the shared-account model in more detail.

Deepen your knowledge

NHI governance, agentic AI identity, and machine identity lifecycle are core topics in our NHI Foundation Level course, the industry's only accredited NHI security programme. If you are responsible for identity security strategy or NHI governance in your organisation, it is worth exploring.