Digital Forensic Investigation for UK Businesses
When you need to know what happened rather than what probably happened — and to be able to demonstrate it later to an employment tribunal, an insurer or the ICO.
What is digital forensics used for in a business?
Digital forensics establishes what actually happened, from evidence rather than assumption. Businesses use it after a breach to determine what data was accessed, in employee misconduct or data-theft cases to produce defensible findings for HR or legal proceedings, and to satisfy regulators that a proper investigation took place.
Evidence is fragile, and the first response usually destroys it
The most common reason an investigation fails is that the business acted first and called later. A laptop is wiped and reissued. A departing employee's mailbox is deleted to reclaim the licence. An infected server is rebuilt to get trading again. Each of those is understandable, and each destroys the record of what happened.
If you suspect you may need to establish facts later — for the ICO, for an insurer, for a tribunal, for a police report — preserve first. Isolate the device from the network but leave it powered on if it is on, suspend any automatic deletion or retention policy on the relevant accounts, and take advice before anything is rebuilt or reissued.
- Do not wipe, reimage or reissue suspect devices
- Place a legal hold on mailboxes and cloud accounts before deleting anything
- Suspend automatic log rotation and retention expiry on relevant systems
- Record who touched what, and when, from the moment concerns arise
Breach investigation
After a security incident the questions that matter are: how did they get in, when, how long were they present, what did they access, did data leave, and are they still there? Those answers directly determine your notification obligations, so guessing is not an acceptable substitute.
We work from endpoint artefacts, authentication and audit logs, mail records, firewall and proxy data, and cloud platform logs to build a defensible timeline — and we are equally clear about what the evidence does not show, because over-claiming in a report that later reaches a regulator helps nobody.
Employee and insider investigations
A significant share of our forensic work involves people rather than malware: a departing salesperson suspected of taking the client list, misuse of company systems, or a dispute over what an employee did and when. These require particular care because the findings may end up in an employment tribunal, and because the investigation itself must comply with UK GDPR and employment law.
We work to a defined scope agreed with your HR advisers or solicitors, examine only what is proportionate to the allegation, and report factually — what the evidence shows, what it does not show, and where alternative explanations exist. That restraint is precisely what makes a report hold up.
- USB and removable media usage — what was connected and what was copied
- Cloud and personal webmail upload activity
- File access, print and deletion history
- Mailbox forwarding and auto-rule creation
- Browser and application activity within the agreed scope
Included in every engagement
Fixed scope, agreed in writing before we start. If the scope changes, we stop and re-quote rather than invoicing the difference.
Digital Forensics — your questions answered
Can you recover evidence if a device has been wiped?
Will your report be accepted in an employment tribunal or court?
Can we investigate an employee without telling them?
How long does a forensic investigation take?
What should we do right now to preserve evidence?
Question not answered here? Call +44 7424 967568 or email support@cipherknights.com.
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Ready to talk about digital forensics?
Book a free, no-obligation consultation with our Leicester team, or call us and we will point you in the right direction whether or not you become a client.