How should organisations reassess physical security when employees return to office after long remote work periods?

Why office return changes the physical threat model

Long remote periods tend to erode the habits that make physical security effective. Badge checks get less consistent, tailgating becomes easier to excuse, visitor challenge culture weakens, and informal assumptions about “who belongs here” replace active verification. A reassessment should treat the office as an access-controlled environment that must be re-earned, not a place that is automatically safe because staff are familiar with it.

That matters because physical security failures often begin with routine behaviour, not dramatic breaches. The controls that matter most are the ones people interact with every day, door entry, receptionist challenge, escorted movement, device visibility, and rules for papers, whiteboards, and unattended desks. If those have drifted during remote work, the office may look normal while its control baseline is no longer trustworthy.

Return-to-office reviews should also account for the fact that office risk is now linked to digital identity and access decisions. Remote working often normalises stronger authentication, stricter conditional access, and more explicit device checks, while on-site work can create a false sense that proximity equals trust. A useful reset is to align building access, workstation access, and clean desk expectations so that physical presence does not become a shortcut around other controls. For a broader remote-access perspective, the Remote Access Identity Guide is a useful companion when teams are balancing in-office and off-site trust assumptions.

Which controls deserve a fresh validation pass

Reassessment should begin with the control points that determine who can enter, observe, and remove information from the office. Visitor handling needs to be explicit again: identity verification, sign-in discipline, escort requirements, and temporary access expiry. Badge procedures should be checked for lost-card handling, shared-use workarounds, and whether access groups still match current attendance patterns. Camera coverage and retention should be reviewed not just for deterrence, but for whether incidents can actually be reconstructed after the fact.

Document and workstation handling deserve equal attention. Offices that were lightly occupied for months often accumulate stale prints, exposed notes, unlocked filing, and neglected shared rooms. The practical question is whether someone can walk in, sit down, and learn something they should not. If the answer is yes, the environment has not really been reset for return-to-office operation.

Control review should also include employee behaviour because physical security is partly social, not purely technical. Staff need to challenge unknown people, notice propped doors, and report unusual room access without waiting for a confirmed incident. Those expectations only work when managers model them and when challenge is treated as normal security hygiene rather than interpersonal discomfort. That is one reason physical control reviews often fail when they are delegated entirely to facilities teams instead of owned jointly with security and workplace operations.

How to test the office safely before complacency turns into exposure

The best reassessment is evidence-based. Walkthroughs are useful, but they can miss the gap between policy and actual behaviour. Red team style exercises, controlled tailgating tests, reception bypass attempts, lost-badge scenarios, and after-hours access checks expose whether people and process still hold under pressure. The goal is not theatrics, it is to find the path an intruder would actually take.

Tests should be realistic enough to reveal the weakest link in the chain. If reception checks are strong but side entrances are routinely left open, the building is still exposed. If badge readers work but staff routinely hold doors for unfamiliar people, technology alone will not close the gap. If devices are visible on desks but screen locking and document discipline are weak, the issue is operational behaviour, not hardware. The most useful exercise outcomes are usually specific failure patterns, not generic “awareness” findings.

Where those exercises uncover repeatable weaknesses, organisations should treat them as control failures, not one-off training moments. A door that can be bypassed, a visitor process that is inconsistently applied, or a challenge culture that breaks down under social pressure should be remediated and then retested. That loop is what turns reassessment into actual risk reduction instead of a compliance exercise.

Risk and Threat Considerations

Return-to-office periods create a predictable security window: people are relearning routines while attackers, opportunists, and even casual intruders can exploit reduced vigilance. The main risk is not just unauthorised entry, but the quiet combination of access, observation, and opportunity that leads to theft, espionage, device compromise, or exposure of sensitive information.

Failure mechanism: Complacency weakens challenge behaviour, propped doors and weak visitor control create easy entry paths, and unattended documents or devices provide fast opportunities for collection or compromise.

Impact: A single physical access failure can expose confidential material, enable persistence inside the office, or create a bridge into connected systems through stolen devices, photographed information, or trusted on-site presence.

Practitioner Guidance

What to prioritise: Start with the controls that convert uncertainty into observable enforcement, reception checks, badge issuance, visitor escorting, and door integrity. If those are inconsistent, the rest of the physical programme will look stronger than it is.

What to verify: Test the office the way a real intruder would experience it, including side entrances, unattended reception periods, room access after hours, and whether employees will challenge unfamiliar people without prompting.

What good looks like: Staff treat physical access as something to verify every day, not something assumed because the office is familiar. Visitor, badge, and document controls behave consistently enough that bypasses are visibly difficult, not merely prohibited.

Practitioner takeaway: The return-to-office moment is the right time to reset physical security expectations, because the greatest risk is not ignorance of the rules, but the organisation quietly forgetting to enforce them.

Related resources from NHI Mgmt Group

• How should organisations prepare for password reset demand when employees return to the office after a long remote period?
• Why does endpoint security matter even after employees return to the office?
• How should organisations secure remote work without making security policies too hard for employees to follow?
• How should organisations build a practical security awareness programme for employees who use cloud apps and remote work tools?