We have been on the other side of this work. Several of our examiners come from law enforcement — as police officers, detectives, state police digital forensics examiners, and military criminal investigators. We know how digital investigations are supposed to be conducted because we have conducted them. That background is what makes us effective at identifying where a law enforcement investigation went wrong.
When an attorney needs to know whether law enforcement followed proper procedure from case initialization through final report, that review is one of the most consequential engagements we perform.
The full investigation, not just the extraction
A law enforcement digital investigation is a sequence of steps, and a failure at any one of them has consequences that can travel through the rest of the case. We review the entire chain.
Case initialization is where scope is established. Warrant requests describe what law enforcement is authorized to search. Search warrants served to providers define what the carrier or platform is required to produce. Evidence preservation documents what existed at the time of seizure. Evidence processing describes how the examination was conducted. Chain of custody records who handled the evidence and when. The final report presents findings that rest on every step that preceded it.
An error in a warrant affidavit can taint what follows. An evidence handling failure can render findings inadmissible. A report that draws conclusions beyond what the examination supports is a problem regardless of how careful every prior step was. We look at all of it.
Warrant scope and the Fourth Amendment
Warrants authorize specific searches. Law enforcement that steps outside the scope of an authorized warrant — accessing accounts not named, searching devices not listed, seizing property not described — creates Fourth Amendment issues that attorneys need to identify before trial, not during it.
We review warrant affidavits against what was actually examined and produced. We review provider returns against what the warrant language authorized. When law enforcement searched beyond the scope of what the court authorized, we document the overstep in terms that support a suppression motion or a Brady argument. The technical record of what was accessed, when, and by what method exists whether or not it is reviewed. We review it.
What happens when law enforcement mishandles a device
This is where the consequences are most immediate and most often overlooked by attorneys who are not technical.
A phone that is accessed before a proper seizure or warrant has been touched by law enforcement in a way that creates problems on several levels. Any interaction with an unlocked phone generates forensic artifacts. The device logs the access — like a metadata timestamp, it records what happened whether anyone intended it to or not. Applications update. Notifications clear. In the worst cases, data that could have been recovered forensically is overwritten by activity that happened because law enforcement picked up the phone and started using it.
A phone that was seized and then used directly — rather than being preserved and imaged before examination — has been forensically compromised. The examination that follows is working from a modified device, not the device as it existed at the time of the alleged offense. Data that existed at the moment of seizure may not exist at the moment of extraction. More specifically: potentially exculpatory data may have been overwritten. That is not a technicality. It is a Brady issue.
We can examine the forensic record of the device itself to determine what activity occurred on it after seizure, who interacted with it, what was modified, and what the device state was at the time law enforcement first accessed it. The phone logs this. We read the log.
Brady implications
Brady v. Maryland requires disclosure of evidence favorable to the defendant that is material to guilt or punishment. Evidence that law enforcement mishandled a device, overwrote potentially exculpatory data, or failed to preserve the evidentiary state of a device at the time of seizure is Brady-relevant. So is a warrant that exceeded its scope. So is a chain of custody gap that cannot be accounted for.
These issues do not surface themselves. They require a technical examination by someone who understands what the device record shows, what the LE documentation should contain, and where the discrepancies are. That is what we provide.
What we look for in law enforcement reporting
LE digital forensics reports vary significantly in quality. We have reviewed government reports that accurately characterized the examination and reached supportable conclusions. We have also reviewed reports that described examination findings in terms that went beyond what the extraction produced, failed to document chain of custody in a way that could be verified, omitted data that was present in the extraction but not included in the report, and characterized device activity in ways that reflected misunderstanding of how the underlying platform operates.
When a report contains findings that the data does not support, that gap is documentable. We document it in a form that can be used in motion practice, at a suppression hearing, or at trial.
The experience behind the review
Our examiners include a former Georgetown Police Department detective, a former Kentucky State Police electronic crime branch examiner, a former Kentucky Attorney General Cyber Crimes Unit investigator, and examiners with military criminal investigation experience. We have been the law enforcement examiner. We have written the reports that defense teams review. We know what a proper investigation looks like from the inside, which is why we can identify when one falls short.
What we provide
- Review of warrant affidavits and search authorization scope against what was actually examined
- Chain of custody documentation review from seizure through examination
- Device-level forensic analysis to determine what activity occurred on a seized device after law enforcement took possession
- Comparison of LE report findings against the underlying extraction data
- Identification of data present in the extraction that was not reported
- Documentation of scope overreach, evidence mishandling, and reporting deficiencies in a format suitable for motion practice
- Expert testimony on LE digital forensic standards and where a specific investigation deviated from them
Who needs this
Defense attorneys in criminal cases where digital evidence was collected by law enforcement are the primary clients for this work. It is also useful for civil rights attorneys challenging the scope of a law enforcement digital search, as wellk as any matter where the integrity of the digital evidence collection is at issue.
If law enforcement touched a phone, searched a cloud account, or served a provider for records in your case, the investigation is reviewable. We review it.
Related services and litigation support
Contact Cyber Agents to discuss whether law enforcement investigation review fits your matter.