Digital Evidence Preservation: Moving Beyond Screenshots
Why standard screenshots fail as evidence and how to properly preserve digital artifacts using hashing, archiving, and strict chain of custody protocols.
A screenshot is trivial to fake. In a legal setting, presenting a standard JPEG or PNG as definitive proof of a webpage's state is increasingly challenged by opposing counsel.
The Problem with Screenshots
Anyone can use browser developer tools to alter text, swap images, or change timestamps before taking a screenshot. Without underlying metadata, a screenshot lacks cryptographic proof of authenticity.
Proper Preservation Requirements
Admissible digital evidence requires establishing that the data existed at a specific time and has not been altered since collection.
- •Cryptographic hashing (e.g., SHA-256) at the time of capture
- •Capture of underlying network traffic and source code (WARC files)
- •Time-stamping via trusted third-party authorities
- •Detailed audit logs of the collection process
Chain of Custody
Chain of custody documents who collected the evidence, how it was collected, where it was stored, and who had access to it. Any break in this chain can render the evidence inadmissible.
Defensible Evidence Collection
Aletheia automatically captures WARC files, generates cryptographic hashes, and maintains a strict, unalterable audit log for all your OSINT findings.