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PAM & Agents 5 min read

Enforcing USB Device Control

Prevent physical data exfiltration by blocking removable storage devices.

Overview

The Trustity Unified Agent includes a kernel-level driver (Windows) or daemon (Linux) to monitor I/O ports.

Policy Modes

  • Allow: All devices are permitted. Activity is logged.
  • Block: Removable storage devices (USB Flash Drives, External HDDs) are instantly unmounted upon connection. Keyboards/Mice are unaffected.
  • Read-Only: (Windows Only) Users can copy files FROM the USB drive but cannot write data TO it.

Configuration

Go to Security Policy > Device Control to apply rules globally or per-group.

Last updated: 12/5/2025

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