Two of the most important technical safeguards in the HIPAA Security Rule are access control and person-or-entity authentication. Access control decides what a user is allowed to do; authentication confirms the user is who they claim to be. Done well, they ensure that only the right people reach electronic protected health information (ePHI), and only for the right reasons.
What access control requires
The Security Rule's access control standard requires technical policies and procedures that allow access to ePHI only to authorized people and software. Its implementation specifications include:
- Unique user identification (required) - every user has a distinct ID so activity can be traced to an individual.
- Emergency access procedure (required) - a way to obtain ePHI during an emergency.
- Automatic logoff (addressable) - ending sessions after a period of inactivity.
- Encryption and decryption (addressable) - protecting ePHI at the access layer where appropriate.
Least privilege and role-based access
Although the rule does not use the exact phrase, the principle of least privilege is central: give each person the minimum access needed to do their job. Role-based access control (RBAC) is a common way to implement this, granting permissions to roles rather than individuals so access stays consistent and easier to review. The Privacy Rule's minimum necessary standard reinforces the same idea on the workforce side.
Authentication
The authentication standard requires procedures to verify that a person or entity seeking access is the one claimed. Authentication factors fall into familiar categories:
| Factor | Example |
|---|---|
| Something you know | Password or PIN |
| Something you have | Security token, phone app, smart card |
| Something you are | Fingerprint or other biometric |
Multi-factor authentication
The Security Rule does not name multi-factor authentication (MFA) as a separate requirement, but combining two or more factors is widely regarded as a strong, reasonable safeguard, especially for remote access and privileged accounts. NIST guidance and many cyber-insurance and contractual requirements now treat MFA as a baseline. Notably, proposed updates to the Security Rule would strengthen expectations around measures such as MFA; those updates are proposed and not yet final, so organizations should monitor their progress while treating MFA as a current best practice.
Reviewing access over time
Access is not set once and forgotten. Effective programs:
- Provision access based on role at hire or role change.
- Promptly remove access when employees leave or change duties.
- Periodically review who has access to what, and recertify it.
- Monitor for unusual access patterns through audit controls.
Orphaned accounts and excessive privileges are common findings in security assessments. Tying provisioning and de-provisioning to HR processes, and reviewing access on a schedule, keeps the gap between authorized and actual access small.
Audit controls reinforce access control
Access control and authentication decide who gets in; audit controls reveal what they did once inside. The Security Rule's audit controls standard requires mechanisms to record and examine activity in systems that contain ePHI. Logs of logins, record views, exports, and configuration changes turn unique user identification into something actionable, letting an organization detect snooping, investigate complaints, and reconstruct what happened during an incident. Logs only help if someone reviews them, so effective programs define what to log, how long to retain it, and who is responsible for periodic review and for following up on anomalies.
Special cases: emergencies and remote work
Two situations deserve deliberate planning. First, the emergency access procedure is a required specification: clinicians must be able to reach ePHI during a crisis even if normal access paths fail, so organizations need a documented break-glass process that is itself logged and reviewed afterward. Second, remote and mobile access has expanded the attack surface. Securing it typically combines multi-factor authentication, encrypted connections, device controls, and automatic logoff, all flowing from the risk analysis. The goal is to extend the same discipline that protects on-site access to staff working from anywhere.