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PDR / Legal and insurance work / Staff conduct and leaver investigations

Plymouth and South Hams employers · evidence off company computers

Workplace investigations, Plymouth. No one hears files leave a device; the machine still records it.

If a returned laptop appears clean, give it a second look. Windows maintains its own logs and the syncing applications maintain theirs, and a tidy-up cannot erase either. An inbox rule forwarding email to a personal account. A memory stick that appeared at 22:40 on a Friday night. A Downloads folder cleaned out on the morning of the exit meeting. The machine is taken out of service, imaged to evidential standard, and what it shows is written up for HR and for your solicitor.

Reports that meet what CPR Part 35 asks Every handover noted Impartial and private

A quiet word first?
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What the disk quietly recorded.

What Windows notes about USBEvery time a memory stick or portable disk is inserted into a Windows machine, Windows logs it, along with the serial number and how long it remained connected. A memory stick appearing for the very first time at 2am on a Sunday, a few days before a resignation, needs an explanation.
Webmail and cloud storageWhether OneDrive, Dropbox, Google Drive or webmail in a browser was used, each leaves residual traces on the machine: sync database entries and cached tokens, browsing history, and uploads that were interrupted part-way. Logging off and tidying up afterwards removes very little of it.
Wipers and wholesale deletionDestroying evidence tends to generate even more of it. What remains is the name of the software used, the time it ran, and (typically the deciding factor) everything it could not reach.
The order is the evidenceSingly, each item likely has an innocent explanation. Lay the events out against the clock (files collected, memory stick in, upload completed, wiper run) and coincidence stops being the obvious explanation.

Get the legal basis settled first.

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What bears on itWhat it requires of youHow we work to it
UK GDPR, plus the Data Protection Act 2018There isn't any lawful basis solely from owning the device. Pick a basis (usually legitimate interests), then complete the balancing test and note it down before anything happensWe only examine the allegation we were given, and go no wider
ICO guidance on monitoring workers, from October 2023By default there needs to be openness; if the risk is high, a DPIA is requiredYour policies are read first, ahead of the disk, and we state plainly when a DPIA is needed
Examination done covertlyRarely defensible (suspected crime, or serious misconduct), and nothing can move without senior management's sign-offNo imaging or reading of data until that sign-off exists in writing
What ACAS expectsA disciplinary decision must be based upon a fair and proportionate investigationRegardless of which side they may support, findings must be included in the report as they stand
Weight before a tribunalEvidence quality is determined by the methodology used to obtain that evidenceA chain-of-custody log that supports your case, rather than providing your opponent with grounds to challenge your evidence
Sending it to us: once you have your quote, our intake lab in Bristol takes tracked, insured post, and we pay to send it back to you. If you'd like to talk packing through with an engineer before you post it, give us a call. There's more detail on our contact page.

Each stage, in turn.

Every job written up →
01

A confidential call first, then a written price Free

Call us and tell us as much or as little as you like. The call costs nothing. It needs to establish what the matter is: what happened, which devices and accounts are involved, and what question the evidence has to answer. That defines the scope. One written figure follows from it, and you get that before anything is opened.

Kept in confidenceA single written figureThe question to be answered
02

Get the machine out of circulation

Most of what vanishes disappears within two weeks, and generally unintentionally. The laptop is rebuilt for whoever starts next. The drive is placed in the spares cupboard. A manager quietly checks its contents. An early write-blocked image gets there before all three.

Imaged at the outsetBefore anybody else touches it
03

Follow the route out

Following that point, the analysis occurs on the copy and nothing else is done to the original. All removable media are listed, with the time they went in and how long they stayed. Everything sent to a personal cloud account or attached to webmail, any deletions, and any use of a wiping tool are also tracked. They all end up on the same timeline.

Each way out examinedDeletions carry a timestamp
04

Written for the people who read it

This report is intended for a tribunal, an HR panel or a solicitor, not an engineer. What we did is evaluated against the ICO's monitoring guidance and against the fair investigation ACAS looks for. If the matter later reaches the police, the document holds up unaltered.

Fit for the tribunal bundleInside ICO and ACAS limits
05

Every exhibit, hash and log

Anything the other side can't check is something to argue over. So we put together a bundle that can be checked: exhibit references, the images each finding was read from, every handover with its date, hash values, and the notes made during the examination. Their own examiner can repeat the work and reach the same result.

Findings, and the exhibits behind themHashes kept, each move recordedAnyone can retrace it

What the work keeps showing

  • Routine IT causes more harm than any planned cover-up: pass the machine on to the next starter and the evidence is gone with the previous build.
  • There is no editing the findings: a tribunal will recognise a report that has been pushed around by an employer, and at that point you have bought nothing. What was written is what you receive.
  • Don't take trade-press figures too seriously: estimates of how many leavers take files start at about one third and rise rapidly, and where a figure lands is largely down to who funded the research. The behaviour does occur. The decimal points are marketing.
  • A computer owned by the employee is a different story altogether: you need either consent or strong legal grounds before anyone touches it, and that is settled on the first call, not halfway through the job.

The only statistic we feel comfortable standing by: Symantec with the Ponemon Institute reported in 2013 that approximately half of recent job-changers admitted keeping confidential material from their previous employer. Just about every other set of statistics published since has come from companies selling a product, and the numbers vary greatly. What we see is much less exciting. When an employer calls able to describe what they believe went, rather than being vaguely uneasy, the artefacts left behind most likely confirm it.

A job out of the casebook.

PL · PLY-2026-0539FILED ✓

The uploads ran twenty days ahead of the resignation

Since the laptop belonged to the company, it was simple to authorise the examination. There was no question about the order of events. The files were collected in one place, a private cloud account was opened, and the transfer went from there. The resignation came twenty days after the last upload. The Falmouth employer had started with only a rival's pitch deck. The undertakings resolved the matter.

Finalised on undertakingsTimed sequence set out inside 7 days

Before you seal the box.

Get these done

  • Shut it down and lock it away
  • Don't close the email accounts or cloud services: doing so will carry away potential evidence
  • Read what the acceptable-use policy actually said to staff
  • Nothing covert unless senior management has approved it in writing

What to avoid

  • Passing the machine on to somebody else
  • Going through the folders yourself
  • Discussing it with the employee before the machine is secured
  • Monitoring covertly with nothing written to justify it

The questions callers ask most.

We own the laptop. Do we get to look at it?

Ownership does not settle the question nearly as much as having a lawful basis for the examination, and a workforce told of this possibility in advance through an acceptable-use policy. If your staff are unaware, it will be argued later. Examining a device without its user's knowledge is reserved for suspected crime and requires a director's signature.

May we monitor somebody covertly?

Rarely, if ever, and never routinely. The ICO's guidance on monitoring workers (published 2023) says covert monitoring is only permissible in exceptional circumstances, such as where a crime is suspected or gross misconduct has occurred. Even then, it looks for senior management approval, a Data Protection Impact Assessment (DPIA), a clearly defined scope, and the reasons documented.

A leaver may have taken files. What comes first?

Preservation, above all. Turn off the machine and lock it in a drawer. Leave mailboxes and cloud accounts active instead of closing them. Do not open a folder before a forensic copy exists. Even well-meant browsing destroys the date stamps that would have shown files moving.

How will a tribunal view it?

The way you got there matters as much as what you found. A damaging finding loses its force when the path leading to it can be taken apart. For a screenshot to be of value there must have been a lawful basis behind it, the search must have stayed within the suspicion that started it, and each stage of handling must have been logged.

Quietly imaged now beats disputed later.

An image of a workplace device taken early and handled properly will withstand scrutiny far better than one made hurriedly after notice has been given. Start it here. The first look is free, and what you tell us goes no further.

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