Identity attacks are now the primary access path in hybrid estates

At a glance

What this is: This is a Hydden analysis arguing that identity attacks have become the dominant initial access path in hybrid and multi-cloud environments, spanning credential abuse, phishing, cloud misconfiguration, privilege escalation, and token abuse.

Why it matters: It matters because IAM, PAM, and NHI governance can no longer be treated as downstream hardening layers; they now sit on the front line of initial access prevention and attack-path disruption.

By the numbers:

• Valid account abuse was responsible for 35% of cloud-related incidents, according to CrowdStrike cited by Hydden.

Context

Identity attack surface management is the discipline of discovering and governing every account, credential, token, and trust path that can be used to enter an environment. In hybrid estates, that matters because attackers rarely need to break the perimeter when they can abuse legitimate identity pathways instead.

Hydden frames the problem as a shift from network-first intrusion models to identity-first access paths across human and non-human identities. That is consistent with what IAM, PAM, and NHI teams are seeing in practice: lifecycle gaps, cloud misconfigurations, and weak visibility create usable entry points long before any endpoint alert fires.

The article’s core claim is not that identity is new, but that identity is now the main attack surface organisations fail to inventory completely. That makes continuous discovery and lifecycle governance a control problem, not a reporting exercise.

Key questions

Q: What breaks when identity visibility is incomplete in hybrid estates?

A: When identity visibility is incomplete, attackers can hide inside legitimate accounts, cloud roles, and machine identities without triggering the controls teams think they have. The result is not just missed inventory, but missed attack paths: hidden privilege, unmanaged tokens, and trust relationships that still work. In hybrid estates, incomplete visibility turns governance into guesswork.

Q: Why do compromised identities remain such a persistent risk in identity security programs?

A: Compromised identities are persistent because access often outlives the original approval, especially for service accounts, API keys, and delegated privileges. When teams cannot continuously verify entitlement and usage, they keep trusting credentials that may already be exposed or misused. A strong program focuses on revocation, least privilege, and continuous monitoring.

Q: What are the signs that service accounts are becoming an attack path?

A: Warning signs include long-lived credentials, broad cloud roles, weak ownership, and service accounts that appear in authentication or privilege-change logs outside normal operations. Another signal is when machine identities are not reviewed with the same discipline as human accounts. Those patterns usually mean the account is usable well beyond the task it was created for.

Q: How should security teams reduce the blast radius of privileged identities?

A: Security teams should define a small set of tightly governed admin identities, give them the minimum authority needed, and make elevation time bound. The goal is to prevent one compromise from cascading across identity, device, and SaaS control planes. Continuous review of who can administer what is more important than periodic access cleanup.

Technical breakdown

How identity-based initial access works in hybrid estates

Initial access in identity attacks usually starts with something the environment already trusts: stolen credentials, phishing, exposed cloud services, or weak account controls. Attackers use those paths to authenticate as a real user or service, which bypasses many perimeter controls by design. In hybrid estates, the challenge is that the same identity may be valid across SaaS, cloud control planes, and internal systems, so one compromise can open multiple surfaces at once. This is why identity discovery and authentication telemetry matter as much as endpoint or network telemetry.

Practical implication: treat identity entry paths as first-class detection surfaces, not as authentication hygiene alone.

Why privileged account abuse accelerates lateral movement

Once inside, attackers look for group membership, service accounts, cloud roles, and PAM exposure that expand what the initial identity can do. Over-permissioned accounts are especially useful because they turn a low-value foothold into broad access without noisy exploitation. Credential dumping, pass-the-hash, OAuth token abuse, and application impersonation all support the same objective: move from one trusted identity to another while appearing legitimate. The mechanism is not brute force alone, but chaining valid access with hidden privilege edges.

Practical implication: map privilege relationships and identity dependencies so you can spot where a single account can fan out into broader access.

How persistence is maintained through tokens and hidden accounts

Persistence in identity-centric attacks often comes from backdoor accounts, malicious OAuth applications, stolen refresh tokens, or account creation events that look routine. Unlike malware-only persistence, these methods survive because they are rooted in identity trust rather than code on a single host. Machine identities amplify that risk because service accounts, API keys, and tokens can remain active for long periods and are often outside user-centric review cycles. In practice, the attacker is not merely keeping malware resident; they are preserving a reusable identity path back into the estate.

Practical implication: watch for identity creation, consent, and token events that outlive the business need that justified them.

Threat narrative

Attacker objective: The objective is durable access to sensitive data, SaaS applications, cloud resources, and privileged identity paths that can be reused for exfiltration or disruption.

1. Attackers enter through stolen credentials, phishing, exposed cloud services, or other identity weaknesses that provide valid authentication paths.
2. They establish foothold by mapping identity stores, group memberships, service accounts, and trust relationships to find privileged routes.
3. They escalate by abusing over-permissioned accounts, credential dumps, or token replay to move laterally across systems and cloud environments.
4. They persist through backdoor accounts, OAuth token abuse, and application impersonation before staging data for exfiltration or other impact.

Breaches seen in the wild

• Co-op cyber attack 2025: Attackers linked to Scattered Spider tricked their way into a Co-op employee account and stole personal data of all 6.5 million members.
• Sisense breach 2024: A credential in Sisense's GitLab reportedly opened S3 buckets of customer tokens, passwords and certificates; CISA urged a full reset.

Read and download The State of NHI & AI Agent Breach Report 2026, covering 200+ breaches impacting Non-Human Identities including AI Agents.

NHI Mgmt Group analysis

Identity discovery is now an access-control prerequisite, not an inventory nicety. The article’s central finding is that attackers exploit what defenders have not mapped, whether that is a shadow service account, a forgotten cloud role, or an OAuth token that still works. Traditional IAM assumes the estate is sufficiently known to govern it; hybrid identity attacks prove that assumption no longer holds. Practitioners should read this as a governance problem where incomplete identity visibility directly translates into attackable access.

Machine identity governance has become part of initial access defence. Service accounts, API keys, and other non-human identities are no longer just back-end plumbing. They are often the easiest path from first foothold to broad enterprise access because they combine high privilege with weak human-style oversight. That means NHI lifecycle control is not a niche control plane but a core element of access-path reduction.

Standing privilege is the identity blast radius multiplier. The article repeatedly shows attackers turning one legitimate identity into many systems through group membership, cloud roles, and PAM exposure. The issue is not only privilege excess, but the fact that hybrid estates preserve it across platforms and trust boundaries. That makes blast-radius reduction the real objective, because the compromise of one account can otherwise become a multi-domain event.

Zero Trust fails when identity visibility is incomplete. The article’s own critique is blunt: you cannot verify what you do not know exists. That means Zero Trust Architecture can become a paper control if the identity layer is not continuously discovered, classified, and correlated across on-prem, cloud, SaaS, and machine identities. The implication is that Zero Trust and identity attack surface management must be aligned operationally, not just discussed together in strategy decks.

What this signals

Identity attacks are no longer a specialised subset of intrusion activity; they are the default route into hybrid estates whenever visibility, lifecycle governance, or privilege boundaries are weak. That means identity programmes need to be measured by how much attack path they remove, not just by how many accounts they administer.

Identity attack surface management: the useful unit of analysis is the full set of accounts, credentials, tokens, roles, and trust relationships that can be used for access, not the directory alone. Teams that operationalise that view can connect IAM, PAM, and NHI governance into one control narrative.

For practitioners

• Implement continuous identity discovery Replace periodic manual audits with continuous discovery across on-prem, cloud, SaaS, and hybrid identity stores so hidden accounts and trust paths do not persist between reviews.
• Correlate identity telemetry with vulnerability data Connect exploit intelligence, account creation events, privilege changes, and authentication logs so you can trace when a vulnerability turns into usable identity access.
• Prioritise non-human identity controls Apply strict rotation, vaulting, JIT access, and least privilege to service accounts, API keys, refresh tokens, and other machine identities with broad reach.
• Scrutinise identity lifecycle anomalies Watch for unusual account creation, privilege changes, deletion gaps, consent grants, and token persistence patterns that indicate identity abuse rather than normal administration.
• Red-team identity attack paths Test phishing, MFA downgrades, credential stuffing, token replay, and privilege escalation routes against the identities that matter most in your environment.

Key takeaways

• Identity compromise now functions as the main access path in hybrid estates, which makes identity governance a front-line security control rather than a back-office administration task.
• The article shows a repeatable attack pattern that spans credential abuse, phishing, cloud misconfiguration, privilege escalation, and token persistence across human and non-human identities.
• The most effective response is to shrink the identity attack surface through continuous discovery, tighter privilege boundaries, and lifecycle control over both human and machine credentials.

Key terms

• Identity Attack Surface Management: The practice of identifying and reducing the identity-related paths an attacker can use to gain or expand access. It covers accounts, permissions, trust relationships, authentication settings, and administrative workflows, with special attention to the places where identity compromise can become enterprise-wide compromise.
• Machine Identity: The digital identity of a machine, device, or workload, such as a server, container, or VM, used to authenticate it within a network. Sometimes used interchangeably with NHI, though NHI is the broader category.
• Standing Privilege: Standing privilege is access that remains active even when no immediate task requires it. For NHI programmes, it is a common failure mode because long-lived credentials and persistent roles create unnecessary exposure. Reducing standing privilege usually means tighter expiry, on-demand access, and clearer review of who or what still needs access.
• OAuth Token Abuse: The misuse of valid OAuth access or refresh tokens to gain unauthorized access without repeating the original login. In NHI terms, the token becomes the credential, so the real control problem is issuance, storage, scope, and revocation rather than passwords alone.

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 building or maturing an IAM programme, it is worth exploring.