Method and rigour
Check command of forensically sound acquisition: write blockers, hashing with MD5/SHA-256, chain of custody logs, imaging in E01 versus dd, and validation of EnCase, Axiom or FTK output.
Evidence to listen for
- Follows and can justify an established methodology
- Understands contamination, bias, and chain of custody as they apply to the field
- Knows the limits of their techniques and says so
- Documents procedure so results are reproducible and defensible
Five-point scoring guide
Careless method; unaware of contamination, bias, or procedural integrity.
Knows procedures but applies them inconsistently; gaps in documentation.
Sound standard practice; less certain outside familiar techniques.
Rigorous and well documented; understands the limits of each method.
Names verification steps at each stage, explains hash mismatch handling, and treats custody documentation as evidence rather than paperwork.