Exceptional at rootkit detection, registry fix-ups, and neutralizing malware that hides in system memory. 3. Kaspersky Virus Removal Tool (KVRT)

Removes spyware, Trojans, worms, ransomware, and PUPs (Potentially Unwanted Programs).

Laptops used in hotels, airports, or co-working spaces are high-risk. A portable scanner lets you run an emergency check before connecting to the corporate VPN without permanently slowing down your travel laptop with background processes.