Early instruction is critical in digital forensics cases: electronic evidence can be lost, overwritten, or deleted if not preserved promptly after the dispute arises.
What Digital Forensics Covers
Digital forensics is the application of scientific investigation techniques to electronic data. In civil disputes, digital forensics experts analyse computers, mobile devices, cloud storage, email servers, network logs, and metadata to establish facts relevant to the case.
Key areas include: data recovery from damaged or deleted storage; analysis of USB device activity and file transfer logs; email forensics and communication analysis; cloud storage and SaaS platform forensics; mobile device forensics (iOS and Android); metadata analysis for document authenticity; and network forensics for unauthorised access or data exfiltration.
All analysis must maintain chain of custody integrity, a documented record of the seizure, transfer, analysis, and storage of evidence, to ensure court admissibility.
E-Discovery Under CPR Part 31
CPR Part 31 governs disclosure of documents in UK civil proceedings, including electronically stored information (ESI). Practice Direction 31B sets out specific requirements for electronic disclosure in multi-track cases.
Digital forensics experts assist with: identifying relevant data sources across the parties' IT infrastructure; ensuring forensically sound collection that preserves metadata; processing and filtering large data volumes for review; and advising on proportionality of disclosure scope.
In disputes where the adequacy of disclosure is itself in issue, digital forensics experts can provide expert evidence on whether the disclosure process was conducted correctly and whether relevant data may have been withheld or destroyed.
Data Theft and IP Misappropriation Cases
Data theft cases require digital forensics experts to establish: what data was taken; when and how it was accessed; and by whom. Common forensic findings include evidence of bulk file copying to USB devices, forwarding of confidential documents to personal email accounts, and unauthorised uploads to cloud storage services.
In IP misappropriation cases, digital forensics experts analyse device and server data to establish the factual mechanism of the theft, which the forensic accountant then uses as the basis for loss quantification. The two disciplines produce separate CPR Part 35 reports.
Norwich Pharmacal orders may be used to obtain identifying information from third parties (such as internet service providers or cloud platforms), with forensic experts assisting in analysing the information obtained.
Cybercrime Civil Recovery
Civil recovery actions following cybercrime, ransomware, business email compromise, and authorised push payment fraud, require digital forensics to establish the mechanism of the attack and forensic accounting to quantify the financial loss.
Digital forensics experts analyse server logs, email headers, malware artefacts, and network traffic to reconstruct the attack timeline and identify the attack vector. This evidence supports both the liability case and any insurance claim.
GDPR data breach litigation also requires digital forensics input to establish the scope of the breach, the data affected, and whether appropriate security measures were in place.
Credentials and CPR Part 35 Compliance
Key credentials for digital forensics expert witnesses include FBCS (Fellow of the British Computer Society), CEng, EnCE (EnCase Certified Examiner), GCFE (GIAC Certified Forensic Examiner), and GCFA (GIAC Certified Forensic Analyst).
Digital forensics expert reports must comply with CPR Part 35, including a statement of qualifications, instructions, methodology, findings, and opinions. The expert must explain their analysis in terms accessible to a non-technical judge or tribunal.
Instruct early to issue preservation letters to opposing parties and third parties, preventing the destruction of relevant electronic evidence before forensic collection can take place.