Who should be first in line for password retirement?

Why This Matters for Security Teams

Password retirement is not just an authentication project. It is a risk-prioritisation decision about where attackers will get the highest return on effort. Privileged users, high-risk business roles, and externally exposed access paths are first in line because those identities are the most likely to be phished, reused, or brute-forced, and they usually have the broadest blast radius when compromised. That is why guidance from the NIST Cybersecurity Framework 2.0 and the Ultimate Guide to NHIs both point toward least privilege, strong lifecycle control, and rapid reduction of exposed credentials.

The operational mistake is treating password retirement as a universal lift-and-shift exercise. In practice, the highest-risk accounts often sit at the intersection of legacy apps, shared admin access, and remote access tooling, which means they are also the hardest places to change first. That makes sequencing important: if the organisation starts with low-value internal users, it delays the controls that reduce actual breach likelihood. NHI Mgmt Group notes that 79% of organisations have experienced secrets leaks, with 77% of those incidents causing tangible damage, which is a reminder that credential exposure is already a live attack path, not a theoretical one.

In practice, many security teams discover the worst password dependencies only after an exposed account or privileged login has already been used in an incident.

How It Works in Practice

The right order is usually driven by three factors: privilege, exposure, and dependency complexity. Start with identities that can access sensitive systems, make administrative changes, or reach external-facing services. Those accounts create the fastest risk reduction because removing passwords, or replacing them with phishing-resistant methods, cuts off the most common attack paths first. The Ultimate Guide to NHIs is useful here because it frames authentication as part of a broader identity lifecycle, not a one-time login change.

A practical rollout often looks like this:

• Inventory accounts with privileged access, remote access, and third-party exposure.
• Replace passwords first on accounts with the highest blast radius, especially admin and break-glass paths.
• Move high-risk business roles next, such as finance, HR, and production support.
• Retire passwords on externally exposed services before low-risk internal users.
• Pair each cutover with MFA or phishing-resistant authentication and a rollback plan.

Current guidance suggests combining password retirement with access review, session logging, and credential cleanup so old paths are not left active in parallel. Where possible, align the change with a broader NIST Cybersecurity Framework 2.0 program so the organisation can track identity, protect, detect, and recover in one sequence. This also avoids the common failure mode where legacy service accounts, shared admin credentials, and password reset exceptions remain in place after the “retirement” project has technically finished.

These controls tend to break down when critical systems still depend on shared logins, hard-coded credentials, or vendors that cannot support modern authentication.

Common Variations and Edge Cases

Tighter password retirement often increases operational friction, requiring organisations to balance security gains against application compatibility and support burden. Not every environment can move at the same pace, especially where legacy applications, emergency access, or third-party integrations still depend on passwords. Best practice is evolving, but the general direction is clear: retire passwords first where the risk is highest, then work outward to lower-risk populations.

There are a few important exceptions. Break-glass accounts may retain a password temporarily, but they should be isolated, heavily monitored, and tested regularly. Shared vendor accounts can be especially messy because ownership is unclear and rotation is often inconsistent. Service accounts and other non-human identities should not be treated as an afterthought either. NHI Mgmt Group’s Ultimate Guide to NHIs highlights how widely secrets are exposed and mismanaged, which means password retirement should include machine access, not just employee logins.

The practical rule is simple: start where compromise would hurt most and where attackers are most likely to succeed. That usually means privileged users first, then exposed business-critical roles, then the long tail of lower-risk accounts. In environments with heavy legacy dependence, the strategy should be phased rather than absolute, because forcing a full cutover without compensating controls can create outages faster than it reduces risk.

Related resources from NHI Mgmt Group

• Should organisations prioritise external exposure or internal credential governance first?
• Why do access governance failures often show up first in offboarding?
• Why do password manager shutdowns matter for identity governance?
• What should organisations prioritise first: classification, DLP, or AI policy?