Chain-of-Custody in the Age of Encrypted Devices

A decade ago, the hardest part of a forensic acquisition was usually the physical extraction. Today, it's proving — to a standard that survives cross-examination — that the extraction and every subsequent step preserved the integrity of the evidence against a device that was actively trying to protect its own contents.

Modern investigations routinely encounter full-disk encryption, hardware-backed secure enclaves, and remote-wipe capability. None of that makes forensics impossible, but it raises the bar for what "chain-of-custody" needs to mean in practice: cryptographic hashing at every handoff, tamper-evident logging of acquisition tools and their exact versions, and a documented methodology that a defense expert can independently reproduce.

We've found that the investigations that hold up best in court aren't necessarily the ones with the most exotic extraction techniques — they're the ones with the most boring, meticulous documentation. A courtroom doesn't reward cleverness; it rewards reproducibility.

For agencies building or refreshing a forensics capability, the standing recommendation is the same one we give every client: invest as much in your reporting and methodology-documentation tooling as you do in your acquisition tooling. The extraction gets you the data. The documentation is what makes the data admissible.