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How Attackers Exploit Privileged Access and How to Lock Them Out
Balaji N · 2026-06-24 · via Cyber Security News

Exploit Privileged Access

Every major breach you read about has a quiet middle chapter that rarely makes the headline. The headline is the ransom note or the leaked customer database.

The middle chapter the part that actually decided the outcome is almost always the same: an attacker found a privileged credential, used it to move sideways through the network, escalated to administrator, and then did whatever they wanted. Privilege is the difference between a contained incident and a catastrophe. 

This is why privileged access management (PAM) has moved from a “nice to have compliance checkbox” to the load bearing wall of modern identity security.

If you’re evaluating where to invest, the Free Buyer’s Guide for Complete Privileged Access Management (PAM) from BeyondTrust lays out the eight must have capabilities that separate a real PAM program from a password vault with a fancy name. This article walks through why those capabilities matter using the way real attacks actually unfold. 

Why Privilege is the Attacker’s Favorite Target 

Stolen credentials aren’t a niche problem; they are the problem. Infostealer malware harvested roughly 1.8 billion credentials in the first half of 2025 alone an enormous year over year jump across millions of compromised machines. Once a valid credential exists in the wild, attackers use automated tools to validate it at scale and then weaponize it.

The Verizon 2025 Data Breach Investigations Report found that 54% of ransomware victims had credentials previously exposed in infostealer logs. Credential theft, in other words, is the on ramp to nearly everything worse. 

google

The reason credentials are so valuable is that they bypass your defenses legitimately. A firewall, an EDR agent, and a SIEM are all built to flag anomalies. But a valid admin login looks exactly like the real admin logging in. 

That’s why credential based intrusions are both the costliest and the slowest to detect, with industry data pointing to dwell times approaching ten months before discovery and containment. For nearly a year, an attacker can quietly own your environment using nothing more exotic than a password that should have been rotated. 

Anatomy of a Real Privilege Attack: A walkthrough 

Let’s make this concrete with a composite scenario that mirrors a real incident pattern documented by Microsoft’s security team in mid 2025. Picture a mid sized organization call it “Northwind Manufacturing” running a typical mix of on prem Active Directory, some cloud workloads, and a handful of internet facing servers. 

Stage 1 Initial foothold. An attacker finds a file upload vulnerability on an internet facing web server and plants a web shell. No credentials needed yet just an unpatched edge service. They now have code execution as a low privileged service account. 

Stage 2 Local privilege escalation. The service account can’t do much. So the attacker abuses a well known Windows token impersonation technique (the “Potato” family of exploits) to escalate from the limited service context all the way up to NT AUTHORITY\SYSTEM full control of that one machine. This is the pivot point. With local SYSTEM rights, they can now dump credentials cached in memory. 

Stage 3 Credential harvesting and reconnaissance. Using their SYSTEM access, they scrape cached password hashes and run directory reconnaissance enumerating accounts, group memberships, and trust relationships in Active Directory. They’re building a map: which account can get me to the domain controller? 

Stage 4 Lateral movement. Armed with a harvested local admin credential reused across machines (an astonishingly common mistake), they use a Pass the Hash attack to authenticate to other servers without ever cracking a password. They move from machine to machine, tier to tier, hunting for an account with higher privileges. As one body of research on lateral movement puts it: if it isn’t detected, a local compromise becomes a global intrusion. 

Stage 5 Domain dominance and impact. Eventually they land on a domain administrator credential. Now they own identity itself. From here it’s a short walk to deploying ransomware across every endpoint, exfiltrating the crown jewel databases, or establishing persistence that survives password resets. 

How Attackers Exploit Privileged Access
Figure 1. The five-stage privilege escalation chain — each step raises the attacker’s privilege. 

The pattern is always the same.
Look at what made each stage possible: an over-privileged service account. Local admin rights that did not need to exist. A credential reused across systems. A standing privilege that was never time-boxed. No monitoring of privileged session behaviour. Every one of those gaps is something a complete PAM programme closes.

The Exploding Attack Surface: Machine and AI Identities 

Here’s the part that keeps CISOs up at night in 2026. The attack I just described assumed human accounts. But humans are now a rounding error in the identity population. 

Non human identities (NHIs) service accounts, API keys, OAuth tokens, SSH keys, automation bots, cloud workload credentials, and now AI agents vastly outnumber human users. Estimates vary by environment, but research consistently puts the ratio anywhere from 45 to 1 up to well over 80 to 1, and in cloud native and DevOps environments it climbs dramatically higher.

CyberArk’s 2025 Identity Security Landscape found that machine identities now hugely outnumber humans, that nearly half carry sensitive or privileged access, and that 68% of organizations admit they lack identity security controls for AI specifically. 

How Attackers Exploit Privileged Access
Figure 2. Machine and AI identities dwarf human users — and a dangerous share hold privileged access. 

The governance gap is stark. Entro Labs’ H1 2025 research found that around 5.5% of AWS machine identities hold administrator privileges often by default rather than by deliberate design creating silent escalation points that attackers love to find first.

Separately, an enormous volume of secrets continues to leak: GitGuardian’s 2025 research documented tens of millions of new secrets exposed on public GitHub in a single year, and a striking share of exposed secrets live outside code entirely in CI/CD logs, Jira tickets, Confluence pages, and Slack or Teams messages. 

Now layer agentic AI on top. AI agents act autonomously, authenticate continuously, and often inherit broad permissions so they can “just get the work done.” A compromised or over privileged agent credential can execute a full attack chain at machine speed no malware required, because the agent is already trusted to act.

See your real attack surface.

BeyondTrust’s Identity Security Risk Assessment (ISRA), powered by Identity Security Insights®, maps all of this — human, machine, and AI identities — and surfaces the hidden Paths to Privilege™ that attackers are already looking for. It covers AI agent risk, shadow AI, cross-domain escalation paths, and prescriptive remediation tied to MITRE ATT&CK. And it is free.

Why Traditional, Partial PAM Falls Short 

A lot of organizations think they have PAM because they have a password vault. Vaulting credentials is necessary, but it is not sufficient. Consider the LastPass breach, whose consequences kept unfolding into 2025: regulators specifically faulted the failure to protect privileged employee access and the use of inadequately secured personal devices for privileged work.

The lesson isn’t “vaults are bad” it’s that storing a secret does nothing if the privileged session and the device and the access path around it are unguarded. 

True PAM has to answer harder questions than “where is the password stored?” It has to answer: Does this account even need standing privilege, or can we grant it just in time and revoke it when the task is done? Can we eliminate local admin rights on endpoints without breaking productivity? Can we see and record what a privileged session actually does? Can we discover the service accounts and secrets nobody remembers creating? Can we extend all of this to vendors, OT systems, DevOps pipelines, and AI agents? 

The Eight Must have Capabilities and How BeyondTrust Delivers 

The BeyondTrust Buyer’s Guide frames a complete program around eight must have capabilities. Mapped against the attack we walked through, here’s why each one matters and how BeyondTrust’s platform addresses it: 

CapabilityWhat it actually does — and where it stops the attack
Privileged credential & secrets managementVault, rotate, and broker every credential — including the machine secrets and API keys scattered across CI/CD pipelines that nobody is tracking. Password Safe® closes the door at Stages 3 and 4 of the attack chain.
Endpoint privilege managementRemove standing local admin rights and enforce least privilege on Windows, macOS, Linux, and servers — while still letting people do their jobs when genuine elevation is needed. EPM cuts the legs out from under Stage 2.
Just-in-time accessGrant elevated privilege for the exact moment it’s needed, then auto-revoke it. With Entitle, even a stolen credential is mostly useless because standing privilege no longer exists to steal. Stages 3 through 5 depend on persistence; JIT removes it.
Privileged session management & monitoringRecord, audit, and terminate privileged sessions in real time. What looks like a legitimate admin login becomes a fully accountable, watchable event — with tamper-proof logs your compliance team will thank you for.
Secure remote & vendor accessThird-party vendors and contractors are in the top tier of breach origin stories. Privileged Remote Access replaces VPNs and shared credentials with brokered, least-privilege access — so your vendors can do their jobs without becoming your attack surface.
Discovery and identity intelligenceYou cannot protect what you cannot see. Identity Security Insights® continuously surfaces unknown accounts, orphaned service identities, and the hidden Paths to Privilege™ attackers are mapping right now — including AI agents you didn’t know you had.
Coverage for modern workloadsDevOps pipelines, cloud workloads, OT environments, AI agents — the same privilege discipline that covers your human admins now extends to every identity type. Because attackers do not skip the non-human ones.
Zero trust enablementThe Pathfinder Platform ties it all together: continuous verification, unified visibility, integrated controls. Trust is never assumed. It is always re-checked — for every identity, every session, every time.
How Attackers Exploit Privileged Access
Figure 3. Each BeyondTrust control intercepts a specific stage — the attack never reaches the next step. 
  • Privileged credential and secrets management. Vault, rotate, and broker credentials including the machine secrets and API keys scattered across pipelines so harvested or reused passwords stop being a viable path. Password Safe and secrets management close Stage 3 and Stage 4. 
  • Endpoint privilege management with least privilege. Remove standing local admin rights and enforce least privilege on Windows, macOS, Linux, and servers, while still allowing legitimate elevation. Endpoint Privilege Management directly neutralizes the SYSTEM level escalation in Stage 2. 
  • Just in time access. Grant elevated privilege only for the moment it’s needed, then revoke it so even a stolen credential is useless most of the time. Entitle delivers JIT provisioning and removes the standing privilege attackers depend on. 
  • Privileged session management and monitoring. Record, audit, and terminate privileged sessions in real time, turning “invisible legitimate login” into a watched, accountable event. 
  • Secure remote and vendor access. Replace VPNs and shared credentials for third parties with brokered, least privilege access. Privileged Remote Access and Remote Support shrink the vendor attack surface. 
  • Discovery and identity intelligence. Continuously find unknown accounts, orphaned service identities, and risky privilege escalation paths before attackers do. Identity Security Insights maps the very attack paths used in Stages 3 and 4. 
  • Privilege centric coverage for modern workloads. Extend the same controls to DevOps, cloud, OT, and agentic AI the fastest growing and least governed identities. 
  • Zero trust enablement. Tie it together with continuous verification so trust is never assumed and always re checked. 

Implemented together, these capabilities deliver control and accountability over identities, accounts, assets, sessions, and escalation paths and systematically eliminate the threat vectors our Northwind scenario relied on at every single stage. 

The Bottom Line 

Attackers don’t break in through the front door anymore they log in, then climb. The entire game is privilege: acquiring it, escalating it, and abusing it before anyone notices. With machine and AI identities now outnumbering humans by orders of magnitude and credential theft feeding the majority of serious breaches, a partial, vault only approach leaves too many doors unlocked. 

If privilege is where attacks are won or lost, your PAM strategy deserves a deliberate, capability by capability evaluation rather than a leap of faith.

The Buyer’s Guide for Complete Privileged Access Management (PAM) breaks down all eight must have capabilities in depth, walks through specialized use cases like agentic AI, DevOps, OT, and zero trust, and includes a customizable head to head vendor comparison checklist so you can evaluate BeyondTrust against any other solution on your shortlist. 

Ready to take the next step?
Download the PAM Buyer’s Guide

Eight capability checklists, agentic AI use cases, a vendor comparison template — everything you need to evaluate PAM properly.
→ Get the free guide

Get your free Identity Security Risk Assessment

See your real identity attack surface — human, machine, and AI — mapped and prioritised in minutes. Free, fast, and no strings attached.
→ Request your free ISRA

Talk to a BeyondTrust expert

Got a specific environment, a stalled PAM evaluation, or just want a straight conversation? Our LOCAL Team is here to understand your needs and pain points.
→ Talk to an expert

About BeyondTrust

BeyondTrust is the global leader in privilege-centric identity security protecting Paths to Privilege™. Identity alone doesn’t create risk. Privilege does. As human, machine, and AI agent identities explode across every environment, BeyondTrust is the only company built to discover, control, and secure privilege across all of them from a single platform. Trusted by 20,000+ customers, including 75 of the Fortune 100, and recognized as a multi-category leader by top industry analysts, BeyondTrust reframes identity security from a management problem into a strategic advantage.
 
→ Get the BeyondTrust PAM Buyer’s Guide 

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