IT Forensics · macOS
Forensic analysis of macOS USB devices – tracing external devices and storage media
External USB devices and storage media can play a key role in investigations into data leaks, malware and user activity. macOS detects connected hardware via its device and driver architecture; depending on the device, operating system version and type of use, different system and file system traces may be created.
A forensic conclusion regarding a specific device connection should therefore not be drawn on the basis of a single artefact alone. Device detection, volume mounting, file transfer and user action are distinct events.
Why LanCologne?
Since its foundation, LanCologne has specialised in professional IT forensics. Our staff have decades of experience in the field of information technology and assist companies, solicitors, private individuals and, on a regular basis, the courts in the technical investigation of complex digital matters.
The examination is, as a matter of principle, carried out exclusively on a forensic copy, a forensic image or a data source captured in a technically equivalent manner that preserves the integrity of the evidence. The original evidence remains unchanged and is stored in a manner that preserves its integrity.
Our services
We examine available system, unified log and file system traces for indications of external devices and storage media. Technical identifiers, manufacturer or product information, volume labels and time references are correlated with one another, where available.
In the case of external storage media, we also check the mount context, file system references and any file activity during the relevant period.
Typical areas of application
This is how the forensic investigation is carried out
Once the data has been securely backed up, available device and system artefacts are analysed for relevant hardware references. The device information identified is then synchronised chronologically with volume, mount and file system events.
Only when several pieces of evidence fit together is a specific context for connection or use established. A stored device notification on its own is not automatically interpreted as evidence of a file transfer.
Why is this area of investigation relevant to forensics?
USB artefacts can help determine whether an external storage device or another piece of equipment played a role during the period under investigation. Particularly in cases of potential data leakage, the temporal correlation with file activity is crucial.
The validity of the findings depends on the version and the device. For this reason, it is always documented which specific trace contains the findings and which conclusions cannot be drawn from them.
Frequently Asked Questions
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LanCologne – macOS Forensics in Cologne
Do you need a professional examination of external USB devices or data storage media on a Mac? LanCologne can assist you with admissible evidence backup and traceable technical correlation.