Zero Trust Security

Zero trust does not grant implicit trust simply because a device is on the office network or belongs to the business. NIST’s Zero Trust Architecture describes a resource-focused approach in which authentication and authorization matter before access. Installing one security product does not complete that architecture.

1. Understand the approach: start with zero trust security for small businesses and choose one important application or file store to assess.
2. Identify the person using it: review named accounts instead of shared logins. Record the approved users, administrators and recovery owner.
3. Check the network boundary: use the network segmentation guide to review which devices should communicate. A separate Wi-Fi name alone does not demonstrate isolation.
4. Close access when work ends: use the employee offboarding checklist to check accounts, sessions and shared access under an authorized process.

A small, testable first step

For the chosen resource, list the people and devices that need access, the permissions they need and who approves changes. Test an authorized user’s required task and confirm that an account without permission cannot reach the resource. Use sample data and agreed test accounts; record exceptions and the owner of each follow-up.

Keep the result specific: a passed access test checks that boundary at that time. It does not prove every system is protected or replace monitoring and recovery. IT MGMT’s cybersecurity services can help prioritize and implement the next step. Discuss your business access needs.

Collection reviewed October 25, 2026. Individual articles retain their own publication and update dates.