A USB write blocker is a vital digital forensics tool that prevents a computer from writing, modifying, or deleting data on a connected storage drive. By intercepting and halting modification commands while allowing read-only access, it serves as the “gold standard” for preserving evidence integrity during investigations. Core Technical Functionality
When a standard USB storage device is plugged directly into a workstation, the operating system immediately interacts with it. This process automatically alters file metadata, updates last-accessed timestamps, and can even inject hidden system files.
A USB write blocker prevents this by sitting physically or logically between the suspect evidence drive and the forensic workstation.
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