Preserving Electronic WeChat Evidence for Chinese Supply Contract Litigation
Preserve electronic WeChat evidence for Chinese litigation by securing original hardware, extracting database hashes, and completing formal notary preservation.
Forensic Imaging
Meaning
The precise extraction and replication of digital storage media using write-blocking technology creates an exact copy of the data without altering the original evidence. In Chinese judicial practice, forensic imaging is used during audits and litigation to secure digital files. The resulting bit-stream copy includes both active and deleted data, providing a complete record for analysis.
This definition applies strictly to certified technical procedures that preserve data integrity, excluding standard file copying and backups.
Legal Protocol
Procedural laws require that the collection of digital evidence follow strict rules to be admissible in a Chinese court. When forensic imaging is performed, it must be conducted by certified forensic experts who document the entire process in a chain of custody report. The experts must calculate the hash values of both the original media and the image to prove they are identical.
If these protocols are not followed, the court will exclude the evidence, making it useless in the dispute.
Compliance Limitation
Administrative regulations on data export impose heavy limits on how copies of digital media can be shared. A company cannot simply send the results of forensic imaging out of China to a foreign headquarters or court. Under the Data Security Law, if the image contains important data or personal information, it must undergo a security assessment before export.
This restriction prevents foreign lawyers from conducting direct discovery on Chinese servers during international litigation. The image must remain in China unless specific administrative approvals are obtained.
Operational Procedure
Technical steps must be carried out carefully to ensure that no data is altered during the collection process. The technician first attaches a physical write-blocker to the storage device to prevent the operating system from writing new data to it. Then, the forensic imaging software reads the device sector-by-sector to create a raw image file.
This process is often conducted on-site at the factory or office to minimize operational disruption. Once the image is created, it is stored on an encrypted drive, and its hash value is recorded in the final inspection report. This rigorous procedure protects the integrity of the data, ensuring it remains untampered and legally defensible for any subsequent regulatory or judicial review.