E-Signature & Screenshot Forensics
Was the signature real?
A law firm needed to know what the records behind a disputed e-signature really showed. In one business day, we examined the signing records and 71 screenshots and videos. We delivered two written reports that counsel could act on.
- turnaround
- 1business day
- images and videos reviewed
- 71
- files hashed before and after — 0 changed
- 76
- Client
- Law firm, commercial dispute
- Service
- Digital document and metadata examination
- Turnaround
- One business day
- Deliverables
- Two written reports and a documented methodology
The challenge
Counsel was challenging a document signed electronically. They needed to know where the signature came from, when it happened, how it was made, and how the signer was verified.
Counsel also had text-message screenshots and a screen recording. Were the files genuine? Did anything in them connect to the signing?
Our approach
- Read-only from the start. Every file got a SHA-256 hash (a unique digital fingerprint) before and after. All 76 came back unchanged.
- Signing records. We compared the signing certificate and event history line by line, and rebuilt the signing timeline to the second.
- Screenshots and video. We ran OCR on every image, then checked on-screen clocks, battery levels, dates and screen sizes for consistency.
- A written method citing NIST SP 800-86, ISO/IEC 27037 and SWGDE, and addressing FRE 702 and 901.
What counsel got
- A plain-English signing timeline, every statement tied to the source files
- A clear line between what the records prove and what they don't
- A finding that the copies were re-printed, not native originals
- A source map tracing the screenshots to at least six devices, with edited or re-saved files flagged
Why it mattered. Counsel got answers the same day, written for a lawyer and not a technician. Each conclusion stated its own limits up front. That kind of conclusion holds up when the other side challenges it.