Post-Holiday IT Review: What UK SMEs Should Check When Returning from Summer Break

September return-from-holiday is one of the most vulnerable periods for SME IT. Staff come back to a different world than the one they left six weeks ago: patches have accumulated, alerts may have gone unanswered, leaver accounts might still be active and shared passwords could have been circulated via WhatsApp.

A structured post-holiday IT review takes about 90 minutes and ensures your business doesn't return to a compounding list of unresolved issues.

1. Leaver Account Audit

Summer is when departures happen — staff leave mid-holiday, contractors finish projects, temps don't return. Each departure creates an access management task:

• Identify everyone who left during the summer period

• Verify that their accounts were disabled within 24 hours of departure

• Check shared or generic accounts for any summer-related changes

• Confirm that former contractors and temporary staff have had all system access removed

Unresolved leaver accounts are consistently one of the top findings during security triage reviews. They represent a direct security risk and often a Cyber Essentials compliance gap.

2. Patch Compliance Check

Six weeks of unattended updates means a significant backlog of security patches. When staff return, they may encounter large, disruptive updates that require extended downtime — especially on devices that were offline during the summer.

Check that:

• All workstations and servers have received critical security patches released during the summer

• Devices that were off-network (e.g., laptops taken on holiday) have been updated since returning

• Firmware and BIOS updates on network equipment are current

• Any devices that failed to patch have been investigated

3. Backup Verification

Backup software runs automatically, but that doesn't mean backups succeeded. Verify that:

• Backups ran successfully throughout the summer period (check backup logs)

• At least one sample restore has been performed since returning

• Backup storage hasn't reached capacity during the summer gap

• Cloud backup credentials haven't expired or been rotated without notification

4. Security Monitoring Review

During summer, reduced staffing means fewer people monitoring security alerts. Check that:

• No critical security alerts went unaddressed during the holiday period

• Firewall and intrusion detection systems continued operating normally

• Email security filtering was active (summer phishing spikes are common)

• Any automated processes that depend on internal staff credentials still function

5. Access and Credential Review

Summer holidays often lead to informal workarounds — shared passwords passed via messaging apps, temporary access granted to covering colleagues, VPN credentials shared with family members travelling abroad.

Before the new term fully starts:

• Review all remote access credentials and ensure they've been used only by authorised personnel

• Rotate any passwords that were shared informally during the summer

• Verify that MFA is still enabled for all remote access and administrative accounts

• Check that any temporary access granted to covering staff has been revoked

6. System Performance Assessment

After weeks of unmonitored operation, some systems may be degraded:

• Check server disk space — backups and logs accumulate without monitoring

• Review application performance — unpatched software can cause compatibility issues

• Verify network performance — firmware updates may have changed routing or Wi-Fi behaviour

• Check email system health — unprocessed messages can accumulate during monitoring gaps

A Simple Return-From-Holiday Process

You don't need a formal process to make this work. Assign one person (or your MSP) to run through these six checks in the first week back, document the results, and address any critical findings within 48 hours. The rest can be scheduled into your normal September workflow.

Your Next Step

A Security Triage Call covers a comprehensive post-holiday IT review, identifying any issues that accumulated during the summer and providing a clear action plan for remediation.

Book a Security Triage Call

*This article is part of the Infinite Cloud IT retrospective blog series, filling publication gaps identified during our 2026 content audit.*