Every year, regulated businesses carry unresolved IT and security risks from December into January — not because the risks are unknown, but because no one set aside time to close them. Year-end is the correct moment to fix that. Budget authority is intact, staff are not yet deep into Q1 projects, and a completed review produces documentation that serves compliance, audit, and legal purposes in the year ahead.
A year-end IT security checklist should cover user access controls, patch and vulnerability status, backup integrity, endpoint protection, compliance documentation, vendor risk, and incident response readiness. Completing this review before the calendar turns creates a defensible record of due diligence and a prioritized remediation list for the year ahead. For regulated businesses, documenting the review is as important as conducting it.
Work through the checklist below in sequence. Each item either confirms a control is in place or generates a task that belongs in your Q1 remediation backlog. Both outcomes are useful.
Access and identity management
Stale credentials are one of the most preventable entry points in any environment. By year-end, most organizations have accumulated accounts that belong to former employees, expired contractors, or decommissioned systems.
- Pull a full list of active user accounts and compare it against current headcount and active vendors.
- Disable or delete any account with no legitimate current owner.
- Confirm that multi-factor authentication is enforced for email, VPN, and all administrative portals.
- Review privileged access: who holds administrator rights, and does the scope still match their role?
- Verify that access for employees who departed this year was revoked at or before their last day — and document the confirmation.
Patch and vulnerability management
Unpatched software is a reliable point of entry. Year-end reviews frequently surface servers, network appliances, and line-of-business applications that missed routine update cycles — particularly systems that fall outside standard workstation patching workflows.
- Confirm a vulnerability scan was completed within the past 90 days.
- Identify any systems running software past its vendor-supported end-of-life date.
- Verify that all critical and high-severity patches have been applied, or that a documented exception exists with a defined remediation timeline.
- Review firmware versions on firewalls and remote access software, including VPN clients and remote desktop tools.
Backup and recovery validation
A backup that has never been tested is an assumption, not a control. Recovery capability must be confirmed.
- Verify that backups are running on schedule for all critical systems and data sets.
- Confirm that at least one backup copy is stored off-site or in an immutable cloud environment that is isolated from your production network.
- Conduct or schedule a test restore. Document what was restored, how long recovery took, and whether the data was usable.
- Review your recovery time objective and recovery point objective against current business requirements — both tend to tighten as organizations grow.
Endpoint and network security
- Confirm that endpoint detection and response software is deployed on every managed device, including devices used by remote employees.
- Review DNS filtering and email security configurations for gaps introduced by staff or system changes during the year.
- Audit devices connecting to your network. Unmanaged personal devices, IoT equipment, and forgotten test machines are common blind spots.
- Verify that network segmentation is in place where required — particularly for healthcare organizations subject to HIPAA and financial firms subject to applicable privacy and data security rules.
Compliance documentation
Regulators, auditors, and opposing counsel do not ask whether you have controls. They ask whether you can prove it.
- Confirm your information security policy has been reviewed by a responsible party within the past year and that a dated copy is on file.
- Verify that employee security awareness training was completed and that completion records are retained.
- Review your data inventory: do you know what sensitive data you hold, where it resides, and who can access it?
- Confirm that business associate agreements or data processing agreements are in place with every vendor that handles protected data.
- Check that your incident response plan names current personnel and reflects your current technology environment.