This is Smadav’s "bread and butter." It automatically scans any USB drive plugged into the PC, preventing "shortcut viruses" and hidden malware from executing.

The program uses very little RAM and CPU, making it ideal for older machines or users who don't want their system slowed down by heavy background processes.

Smadav is designed to work alongside your primary antivirus (like Windows Defender, Avast, or Kaspersky). It doesn't aim to be a total security suite but acts as an additional layer of defense, specifically targeting local threats and USB-borne malware that larger programs sometimes miss.