Token sprawl shows why access control is outgrowing IAM reviews

At a glance

What this is: This analysis shows how treating tokens as credentials turns modern automation into invisible access sprawl across cloud and SaaS environments.

Why it matters: It matters because IAM, NHI, and lifecycle programmes cannot govern what they do not inventory, especially when tokens outlive users, workloads, and review cycles.

👉 Read Token Security's analysis of access sprawl when tokens are treated as credentials

Context

Access sprawl is the uncontrolled growth of valid authorization paths, especially bearer tokens, API keys, OAuth grants, and personal access tokens that live outside normal identity review. In token-heavy environments, the problem is not just too many users or roles. It is too many durable access objects that never pass through the same governance path as human identities.

For IAM and NHI teams, the key issue is lifecycle mismatch. Human identity is managed through joiner-mover-leaver processes, but tokens follow application and automation lifecycles that are faster, messier, and often invisible to the identity provider. That gap is what makes token sprawl harder to see, harder to revoke, and easier to weaponise.

The vendor’s argument is straightforward: once a token behaves like a credential, it stops looking like a governed identity object and starts looking like a hidden access path. That is a typical cloud operating model, not an edge case.

Key questions

Q: How should security teams govern API keys and tokens in cloud environments?

A: Security teams should govern tokens as independent access objects, not as disposable secrets attached to a user account. That means inventorying every token, binding it to owner and purpose, limiting scope and lifetime, and revoking it when the business reason for use ends. If a token cannot be reviewed, it cannot be trusted.

Q: Why do bearer tokens create more risk than directory-based IAM records?

A: Bearer tokens create more risk because they often live outside directory records and can be used without reauthentication once stolen or copied. Their permissions persist in applications, code, and SaaS integrations even when the original user is removed. That makes them a silent access path that traditional IAM review cycles frequently miss.

Q: What breaks when tokens are treated like static credentials?

A: What breaks is ownership, lifecycle control, and revocation confidence. Static handling encourages sharing, hardcoding, and long-lived reuse across environments, so the token outlives the job or person that created it. The result is access sprawl, where valid credentials accumulate faster than security teams can see or remove them.

Q: Who should own token governance in an enterprise identity programme?

A: Token governance should be shared, but not blurred. Engineering teams usually create and use the tokens, while security and identity teams should define policy, inventory requirements, and revocation standards. If ownership is unclear, tokens become orphaned, and orphaned tokens are exactly the objects attackers look for in automation-heavy environments.

Technical breakdown

Why bearer tokens become hidden access paths

Bearer tokens, API keys, OAuth grants, and PATs are self-contained access instruments. Whoever holds the token can usually exercise the granted permissions without re-authenticating with MFA or a central identity provider. That design is useful for automation, but it also means the token becomes an independent authority object. Once copied into a config file, CI/CD job, or third-party integration, it may survive well beyond the original user session and bypass the governance controls that protect human logins.

Practical implication: Treat every token as a governed identity object with its own inventory, scope, and revocation path.

Why identity reviews miss token sprawl

Traditional IAM and IGA workflows are built around directories, groups, and roles. Tokens often live in application layers, developer tools, and SaaS platforms that do not synchronise cleanly back to the IdP. That creates a visibility gap: an organisation can have excellent user access review discipline and still carry thousands of active tokens. The blind spot is structural, not procedural. If the review process only asks who still needs a role, it will never ask which tokens still exist or where they are used.

Practical implication: Extend access review scope beyond users and roles to include token inventories, usage, and ownership metadata.

How lifecycle mismatch drives persistent privilege

Tokens are created for application tasks, but they are frequently governed as if they were human credentials. A token issued for a build job, vendor integration, or test workflow may stay active long after the task, project, or employee has moved on. Because token lifecycle is tied to deployment rather than employment, orphaned access accumulates. The result is standing privilege that is hard to spot and harder to clean up, especially when the same token is reused across environments or copied into shared repositories.

Practical implication: Bind token expiry, scope, and ownership to the business purpose that justified issuance, not to the user who first created it.

Threat narrative

Attacker objective: The attacker wants durable, low-noise access that survives normal identity revocation and enables lateral movement or data theft.

1. Entry occurs when an attacker finds a hardcoded token, copied OAuth grant, or shared API key in code, logs, or a collaboration platform.
2. Escalation follows when that token carries broad scopes or is reused across environments, allowing the attacker to move from one service to adjacent systems.
3. Impact occurs when the attacker uses the unmanaged token to exfiltrate data, modify cloud resources, or maintain silent access after the original identity is removed.

Breaches seen in the wild

• Salesloft OAuth token breach — hackers stole OAuth tokens to access Salesforce data via Salesloft.
• Dropbox Sign breach — compromised Dropbox Sign service account exposed API keys and OAuth tokens.

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

NHI Mgmt Group analysis

Access sprawl is the governance failure mode most identity programmes are still underestimating. User-centric IAM can be excellent while token-centric governance remains nearly blind, because the access object is no longer the person. The practical consequence is that directory hygiene and real access hygiene diverge, sometimes dramatically, once tokens are minted outside the identity layer. Practitioners should treat token inventory as a first-class governance problem, not an adjacent hygiene task.

Token sprawl is really lifecycle drift between people, applications, and permissions. Human offboarding can be complete while API keys, OAuth grants, and personal access tokens keep working. That means the identity lifecycle has ended for one subject but not for the access path attached to it, which is why conventional leaver controls miss the risk. Organisations need to understand that the lifecycle of the bearer instrument, not the user account, is often the controlling factor.

One named concept here is access sprawl: the uncontrolled proliferation of valid authorisation paths that outnumber the identities they were meant to serve. This is not the same as privilege creep, because the problem is not only that permissions get bigger. It is that the number of live entry paths grows faster than governance can observe, certify, or revoke them. That changes the identity security baseline across NHI, human IAM, and automation.

Tokens should be treated as NHI objects, not static secrets. That framing is useful because it moves the discussion from hiding values to governing subjects. Once a token can be created, shared, reused, and left behind independently of the user, it behaves like a non-human identity with its own lifecycle obligations. Practitioners should align NHI governance, IGA, and secrets workflows around that reality.

The hidden cost of modern automation is not just scale, but unreviewed scale. Automation multiplies token creation faster than most review cadences can react, especially when developers self-service access in seconds. The field implication is clear: organisations that cannot discover and classify tokens cannot credibly claim to govern machine access at all.

From our research:

• 72% of organisations have experienced or suspect they have experienced a breach of non-human identities, with 46% confirmed and 26% suspected, according to The 2024 ESG Report: Managing Non-Human Identities.
• Enterprises that have experienced a compromised NHI averaged 2.7 separate incidents in the past 12 months, which shows how quickly unmanaged machine access can compound.
• For a wider control view, compare that with The 2025 State of NHIs and Secrets in Cybersecurity and the secret exposure patterns it documents.

What this signals

Access sprawl will force IAM teams to shift from account governance to access-object governance. The practical test is whether your programme can discover, classify, and revoke tokens with the same confidence it applies to human accounts. If it cannot, the organisation still has a governance gap even when directory metrics look healthy.

With 44% of NHI tokens exposed in the wild in our 2025 research, the exposure problem is already operational, not theoretical. That means token governance must move into developer workflows, collaboration platforms, and secrets inventories instead of staying inside the identity team alone.

The next control boundary is not just least privilege, but least persistence. Teams that can tie token issuance to purpose, environment, and expiry will reduce hidden access paths before they become incident response problems.

For practitioners

• Build a complete token inventory Scan GitHub repositories, CI/CD pipelines, SaaS consoles, and secrets stores for active API keys, OAuth grants, and personal access tokens. Record owner, purpose, expiry, environment, and last-used timestamp so the governance team can identify orphaned access paths.
• Bind token use to purpose and context Issue tokens with narrow scopes, short lifetimes, and environment constraints such as specific IP ranges or VPCs. If a token is copied into another environment or used for a different workflow, treat that as governance drift and revoke it.
• Expand access reviews beyond users and roles Add tokens to IGA and PAM review cycles with a separate control owner. Review granted scopes against actual usage, then revoke dormant or over-scoped tokens before they become persistent backdoors.
• Automate revocation on lifecycle change Trigger token revocation when an application is decommissioned, a project ends, or the owning employee leaves. Do not rely on user offboarding alone, because token objects often survive that event in third-party systems.
• Alert on shared or cross-environment reuse Detect when the same token appears in multiple repositories, services, or environments. Shared use is a strong indicator that the token is no longer a bounded access object and should be reissued under a tighter governance model.

Key takeaways

• Token sprawl is a governance problem, not just a secrets-hygiene problem, because bearer access persists outside normal IAM visibility.
• The scale of the issue is already high enough to matter operationally, with unmanaged NHI exposure and breach experience showing that hidden access paths are widely present.
• Practitioners should inventory tokens, bind them to purpose and context, and automate revocation when the business justification ends.

Key terms

• Access Sprawl: Access sprawl is the uncontrolled growth of valid access paths across tokens, keys, grants, and permissions. It differs from simple account sprawl because the issue is not how many identities exist, but how many living ways there are to reach systems, data, and automation without being reviewed or revoked in time.
• Bearer Token: A bearer token is an access artifact that grants authority to whoever possesses it. In practice, it can function like a password without the same human-centric controls, which is why copying, hardcoding, or sharing it creates governance risk across applications, pipelines, and third-party integrations.
• Token Lifecycle: Token lifecycle is the full path from issuance to use, review, expiry, and revocation. Unlike human identity lifecycle, it is often tied to software deployment and automation schedules, which makes it easy for tokens to outlive the job or project that justified them in the first place.
• Orphaned Access: Orphaned access is a live credential or permission that no longer has a valid business owner or operating purpose. For tokens, this often happens when a user leaves, an application is decommissioned, or an integration changes, but the credential continues to work and remains available to attackers.

What's in the full article

Token Security's full blog covers the operational detail this post intentionally leaves for the source:

• Examples of token sprawl across CI/CD pipelines, collaboration tools, and third-party SaaS integrations
• The article's side-by-side comparison of identity sprawl versus access sprawl in modern cloud estates
• Practical guidance on using usage-based governance to flag dormant or unusually broad token access
• The source article's explanation of why tokens should be treated as Non-Human Identities

👉 Token Security's full post covers token lifecycle drift, hidden access paths, and governance failure modes in more detail.

Deepen your knowledge

NHI governance, agentic AI identity, and machine identity security 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.