Lateral movement is the identity gap IAM teams still miss

At a glance

What this is: This article explains lateral movement as an attacker using one compromised foothold, valid credentials, and trust paths to reach higher-value systems.

Why it matters: It matters because IAM and PAM teams have to govern the paths credentials can open, not just the identities that initially authenticate.

By the numbers:

• The average breakout time fell by 67% over the past year, and more than one-third of adversaries broke out in less than 30 minutes.
• StrongDM says 54% of the techniques and tactics used to execute testing of lateral movement were missed.
• StrongDM reports that 97% of the behaviors executed did not have a corresponding alert generated in the SIEM.

Context

Lateral movement is the phase where an attacker turns one initial foothold into access across multiple internal systems. In identity terms, the problem is not just compromise at the edge, but the trust paths, shared credentials, and administrator relationships that let one account or session reach many others.

For IAM, IGA, and PAM teams, this is a governance problem as much as a detection problem. If remote admin tools, local administrator rights, and shared login credentials are allowed to connect sensitive and non-sensitive assets, an attacker can move through the environment while appearing to operate normally.

Key questions

Q: What breaks when an attacker can move laterally with valid credentials?

A: The failure is that internal authentication no longer proves legitimacy. Once a valid identity can reach multiple hosts, the attacker can impersonate normal administration, reuse trust relationships, and blend into expected traffic while expanding access. That is why lateral movement turns identity governance into a containment problem, not just a login problem.

Q: Why do valid credentials make lateral movement so hard to detect?

A: Valid credentials let attackers appear to be normal users or administrators, so the traffic often blends into routine operations. Detection improves when teams combine session baselining, access policy, and behavioral analysis, rather than relying only on malware signatures or perimeter alerts. Identity context is what turns activity into a signal.

Q: What are the signs that lateral movement controls are not working well enough?

A: Weak lateral movement controls usually show up as unusual authentication patterns, unexpected process creation, and network traffic between systems that rarely communicate. Another warning sign is slow detection, because attackers can remain hidden for long periods if monitoring is not baseline-driven. If teams cannot see user, device, and workload activity across segments, their containment model is probably too porous.

Q: How do IAM and PAM teams reduce lateral movement through machine identities?

A: Start by eliminating standing access paths that let one machine identity reach many sensitive systems. Then bind privileged access to purpose, context, and shortest-possible duration, with logs that show which identity used which privilege and why. That combination reduces reuse, constrains blast radius, and improves incident investigation.

Technical breakdown

How lateral movement paths create legitimate-looking access

Lateral movement paths are the internal routes an attacker uses after the first foothold to reach other hosts, services, or data. The article points to remote desktop tools, remote administration tools, credential theft, and Pass the Ticket techniques as common mechanisms. The security problem is that once an attacker has valid credentials, their activity can resemble routine administration, especially where the environment already permits broad internal trust. That makes the path itself, not just the initial compromise, the real control surface.

Practical implication: map which identities, sessions, and admin tools can legitimately reach sensitive systems, then treat those paths as governed assets.

Why privilege escalation and credential dumping accelerate spread

The article describes attackers performing reconnaissance, then stealing credentials and using them to move from device to device. Credential dumping turns one compromise into repeated authentication opportunities, and privilege escalation increases the reach of each subsequent hop. This is not just about breaking a password. It is about reusing a valid identity in places where the organisation has not bounded its reach tightly enough. Once a credential can access multiple tiers, the attacker inherits the trust already embedded in the environment.

Practical implication: reduce the number of accounts that can authenticate across tiers and remove standing privileges that make each stolen credential more valuable.

How detection fails when internal traffic looks normal

The article makes a key point: lateral movement can look like normal network traffic once valid credentials are in hand. That undermines simple perimeter thinking and creates a gap between authentication and behavioural detection. Network traffic analysis, UEBA, and SIEM alerts help, but only if teams have already identified the likely movement paths and the assets reachable through them. If the environment is full of shared access, then legitimate-looking activity becomes the attacker’s camouflage.

Practical implication: correlate identity, endpoint, and network telemetry around internal access paths instead of relying on perimeter alerts alone.

Threat narrative

Attacker objective: The attacker aims to expand one initial compromise into broad internal access that reaches sensitive data and critical systems while remaining difficult to remove.

1. Entry begins with a phishing or credential-theft event that gives the attacker one usable foothold in the environment.
2. Reconnaissance follows as the attacker maps users, devices, host naming conventions, and internal trust relationships to choose the next target.
3. Credential access and privilege escalation occur when the attacker dumps or reuses credentials to access additional hosts and impersonate legitimate users.
4. Impact comes when the attacker reaches sensitive systems, persists across multiple devices, and exfiltrates data or sabotages key systems.

Breaches seen in the wild

• Salt Typhoon telecom intrusions 2025: Salt Typhoon breached US telecoms mainly with stolen logins, then harvested SNMP strings and TACACS/RADIUS keys to spread and persist for years.
• AI LLM hijack breach: attackers used stolen AWS access keys to hijack Anthropic LLM models on Bedrock.

Read and download The State of NHI & AI Agent Breach Report 2026, covering 150+ breaches impacting Non-Human Identities including AI Agents.

NHI Mgmt Group analysis

Lateral movement is an identity governance failure, not just a detection problem: the attack succeeds because the organisation has already allowed credentials and admin relationships to span too many systems. Once valid access exists across multiple tiers, the attacker no longer needs to behave like an intruder to keep moving. Practitioners should treat internal reachability as a governed identity property, not an incidental network condition.

Shared trust paths create identity blast radius: a non-sensitive machine or user that can reach a sensitive host becomes a bridge for attacker expansion. The article shows why local administrator privileges, shared login credentials, and unsegmented internal access turn ordinary accounts into lateral movement infrastructure. The implication is that blast radius is defined by access paths, not by where the breach began.

Standing privilege is the enabling assumption that fails here: privilege assignment was designed for access that stays stable long enough to be reviewed and contained. That assumption fails when a single compromised credential can be reused immediately across hosts and tools, and when internal movement can look legitimate while it is happening. The implication is that IAM teams must stop treating internal authentication as proof of safety.

Identity path mapping should become a first-class control objective: the article’s strongest signal is that teams often know who can log in, but not where those identities can travel after login. Mapping lateral movement paths exposes the relationships between non-sensitive entry points and sensitive assets that traditional access reviews miss. Practitioners should make path visibility part of access governance, not just incident response.

Zero Trust only works when internal trust is actively constrained: the article aligns with the basic Zero Trust principle that valid credentials are not enough on their own to justify broad movement. Remote administration, local admin rights, and peer-to-peer communications need tighter scoping because the attacker uses the same mechanisms administrators use. The practitioner takeaway is to govern east-west access with the same rigor as perimeter authentication.

From our research library:

• 82% of detections were malware-free, with attackers using valid credentials and trusted tools, according to CrowdStrike's 2026 Global Threat Report.
• Read next: Zero Trust Identity Guide

What this signals

Identity path mapping becomes the practical missing control when lateral movement is the threat model. IAM programmes often verify who authenticated, but not how far that identity can travel once inside the environment. The governance question is therefore not only who has access, but which east-west paths that access opens across the estate.

The control problem is compounded by the fact that valid credentials are a camouflage layer. If an attacker can authenticate as a legitimate user or administrator, ordinary monitoring will often read the activity as expected traffic until the access graph starts crossing sensitive boundaries. That is why internal access boundaries need explicit design, not just detection after the fact.

Zero Trust remains relevant here because internal trust is exactly what lateral movement exploits. 90% of IT leaders say properly managing NHIs is essential for a successful zero-trust implementation. according to the Ultimate Guide to NHIs, and the same governance logic applies to human and machine identities when they can traverse sensitive internal paths.

For practitioners

• Map lateral movement paths Inventory which users, service accounts, and admin tools can move from low-value systems to high-value assets. Pay particular attention to remote desktop tools, remote administration tools, and hosts that share stored log-in credentials.
• Separate user and admin accounts Remove the habit of letting one identity span ordinary work and privileged administration. Distinct accounts reduce the chance that a compromised user session can be reused for high-impact internal movement.
• Enforce least privilege on internal reachability Review who can authenticate to sensitive systems and cut back broad internal access that allows a foothold to become a bridge. Least privilege has to apply to east-west movement, not only to initial login.
• Segment sensitive systems and limit peer communications Isolate high-value systems so a compromise of one workstation cannot automatically create a path to the next. Host-based firewall rules and network segmentation should block unnecessary lateral communications.
• Correlate identity and behaviour telemetry Combine SIEM, real-time monitoring, and behavioural analysis so unusual internal access patterns can be distinguished from routine administration. Focus on signals that show a valid identity traversing more systems than it should.

Key takeaways

• Lateral movement turns one compromised foothold into a broader identity and access problem, because the attacker uses valid credentials and trust paths to move legitimately inside the environment.
• The article shows that breakout speed and stealth make internal detection difficult, especially when remote administration and shared access already exist.
• Reducing lateral movement depends on path visibility, privilege reduction, and segmentation that limit how far a single identity can travel.

Key terms

• Lateral Movement: A post-compromise technique where an attacker uses a compromised NHI to move through a network, accessing additional systems and escalating impact without triggering detection.
• Lateral Movement Path: A lateral movement path is the sequence of internal systems, accounts, and trust relationships an attacker can use to reach sensitive assets after initial compromise. It is a practical map of blast radius, showing where weak segmentation or overprivileged identities create shortcuts.
• Privilege Escalation: An attack technique where a compromised identity, often an NHI with initially limited permissions, exploits vulnerabilities or misconfigurations to gain elevated access rights, typically leading to broader compromise.
• East-west traffic: East-west traffic is communication that moves between systems inside an environment rather than entering or leaving it. In microsegmentation programmes, it is the traffic most likely to expose hidden trust assumptions and is therefore the main target for workload-level policy.

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.