Smadav

Smadav is a lightweight antivirus built to run alongside your primary security software rather than replace it, filling a specific gap that many mainstream antivirus programs handle less thoroughly: USB flash drive protection. It's designed to detect, block, and clean malware that spreads through removable storage - a common infection vector in shared computer environments like schools, offices, and internet cafés.

Rather than relying purely on traditional blacklisting of known malware signatures, Smadav combines behavioral analysis, heuristic detection, and whitelisting to catch threats that signature-only tools can miss, particularly newer or modified malware variants that haven't yet been added to standard virus definition databases.

Because it's built to complement rather than compete with your main antivirus, Smadav runs with a light system footprint and is specifically optimized for the USB-borne threats that many general-purpose antivirus suites treat as a lower priority.