What Is Privileged Access Management (PAM) Explained

Introduction

In 2020, a SolarWinds engineer’s account was compromised — not a random employee, but an account with access to software build pipelines serving 18,000 government and enterprise customers. The attackers injected malicious code into the Orion platform update, creating a backdoor that gave them months of undetected access to Treasury, Commerce, and Homeland Security networks. The initial entry point? A single privileged credential.

Privileged Access Management exists because these accounts are the targets most sought after by adversaries — and most frequently exploited in successful breaches. According to CISA, 80% of breaches involve compromised privileged credentials at some stage of the attack chain. The accounts that make legitimate administration possible — root accounts, domain admins, service accounts, and API keys — are the same accounts that, when compromised, allow attackers to move laterally, establish persistence, and exfiltrate data at scale.

Privileged Access Management (PAM) is the discipline and set of technologies designed to protect, control, and monitor these high-risk credentials. In an era of zero trust architecture and supply chain attacks, PAM is not a luxury — it is a fundamental security control required by NIST, PCI DSS, ISO 27001, and every major compliance framework.

What Is Privileged Access Management?

PAM refers to the processes, policies, and technologies that control who can access privileged accounts, when they can access them, what they can do with that access, and a full audit trail of all privileged activity.

A privileged account is any account that has elevated permissions beyond those of a standard user. The four primary categories are:

1. Human privileged accounts: IT administrators, DBAs, network engineers — any human with the ability to make system-wide configuration changes.
2. Service accounts: Non-human accounts used by applications, scripts, and services to authenticate to other services. Often have fixed, never-expiring credentials.
3. Application-to-application credentials: API keys, OAuth tokens, certificates, and secrets that applications use to authenticate to each other. Often stored in code repositories or configuration files.
4. Emergency accounts: Break-glass accounts with maximum privileges for use during critical outages. Often shared credentials stored in a physical safe.

PAM solutions typically provide four core capabilities: credential vaulting (secure storage of privileged passwords and secrets), session management (proxying and recording privileged sessions), just-in-time access (temporary elevation of privileges for specific tasks), and privileged account governance (discovery, provisioning, and access reviews for privileged accounts).

How PAM Works

A PAM solution sits as a control plane between privileged users and the target systems they administer. The typical workflow replaces static credential knowledge with a brokered, audited access model.

1. Credential discovery: The PAM system scans the environment to discover privileged accounts — local admins, service accounts, API keys, SSH keys — and imports them into the vault.
2. Credential vaulting: All discovered privileged credentials are stored in an encrypted vault. Users no longer know the passwords; the PAM system injects credentials on their behalf.
3. Access request and approval: An administrator submits a request to access a target system. The PAM system can auto-approve based on policy (role, time of day, emergency) or route to a manager for approval.
4. Credential checkout or session launch: The PAM system grants access by either checking out the credential for a time-limited session or launching a proxied session directly through the PAM console, never exposing the credential to the user’s clipboard.
5. Session recording: All keystrokes and screen activity during the privileged session are recorded in tamper-evident storage for forensics and compliance.
6. Automatic credential rotation: After the session ends, the PAM system automatically rotates the credential — changing the password on the target system — so even if the credential was observed, it is immediately invalidated.

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Why You Need Privileged Account Management

PAM vs IAM vs PIM: Key Differences

Real-World Use Cases

Database Administrator Access in a Healthcare System: A hospital DBA needs to query production patient databases to debug a reporting issue. Without PAM, the DBA has the root database password stored in a spreadsheet. With PAM, the DBA submits a 2-hour access request, which routes to their manager for approval. The PAM system injects the credential directly into the database tool. Every query executed during the session is logged. After two hours, the session terminates and the database password is automatically rotated. The DBA never sees the credential.

Service Account Sprawl in a Cloud Environment: A financial services company has accumulated 2,000+ service accounts across AWS, Azure, and GCP — many created by developers for temporary projects and never deprovisioned. These service accounts hold long-lived credentials with overly broad IAM permissions. A PAM/secrets management implementation using HashiCorp Vault discovers all service accounts, rotates their credentials to eliminate long-lived tokens, and enforces dynamic secrets (short-lived credentials generated per-request) for all new application integrations.

Vendor Remote Access: A manufacturing company’s industrial control systems require quarterly maintenance by an equipment vendor. Without PAM, the vendor is given a permanent VPN account and admin credentials to the OT network. With PAM, the vendor is granted time-limited, session-recorded access only to the specific systems requiring maintenance. The vendor cannot browse the broader OT network, cannot exfiltrate credentials, and their entire session is recorded for compliance and incident response purposes.

Common Mistakes to Avoid

The most common PAM failure is leaving service accounts outside the vault. Organizations deploy PAM for human privileged accounts but ignore the hundreds of service accounts embedded in application configurations, CI/CD pipelines, and scheduled tasks. These service accounts often have static, never-rotating passwords with broad system access — and are frequently discovered in plaintext in code repositories. A comprehensive PAM deployment must include service accounts, machine accounts, and API keys, not just human admin accounts.

Another critical mistake is treating PAM as a one-time project rather than an ongoing program. Privileged account sprawl is a continuous problem: new privileged accounts are created daily by developers, cloud provisioning, and application deployments. Without a continuous discovery and governance process, the protected account inventory in the vault quickly becomes stale, and new high-risk accounts accumulate outside PAM controls.

Organizations also commonly skip just-in-time access implementation in favor of permanent vaulting. Vaulting alone reduces credential theft risk but leaves the standing privilege problem intact. An account permanently vaulted with administrator rights is still a persistent high-value target. JIT access — where privilege is granted only for the duration of a specific task and automatically revoked — is a qualitatively stronger control that should be the PAM target state for all high-risk accounts.

Getting Started

Building a PAM program requires stakeholder alignment across IT, security, and compliance before technology selection.

1. Discover and classify privileged accounts: Conduct a privileged account discovery exercise using your PAM vendor’s scanner or manual audits. Classify accounts by risk tier: Tier 0 (domain controllers, Azure AD, cloud root accounts) requires immediate protection; Tier 1 (server admins, DBA accounts) is next; Tier 2 (workstation admins, service accounts) follows.
2. Vault Tier 0 accounts immediately: Implement credential vaulting for your highest-risk accounts first. Remove all direct knowledge of these passwords from human administrators. Enforce PAM-mediated access for all Tier 0 systems.
3. Enable session recording: Configure the PAM system to proxy and record all privileged sessions on sensitive systems. This is a required control for PCI DSS compliance, SOC 2, and many regulated industries.
4. Implement JIT access: Transition from permanent role assignments to JIT access, using Microsoft Entra PIM for Azure environments or your PAM vendor’s workflow module. Require justification and approval for privilege elevation.
5. Rotate service account credentials: Enable automatic, scheduled credential rotation for all service accounts in the vault. For cloud-native environments, migrate to dynamic secrets (HashiCorp Vault, AWS Secrets Manager, Azure Key Vault) that eliminate long-lived static credentials entirely.

PAM is a core pillar of zero trust architecture, which assumes that no account — privileged or otherwise — should be trusted without continuous verification. For a comprehensive view of how PAM fits into the broader identity security ecosystem, see our guide on RBAC vs ABAC Access Control Explained.