Norman Virus Control (NVC) is a collection of antivirus software applications and utilities that protect your servers and gateways against malicious software. The most prevalent types of malware are computer viruses, worms, and trojans. The single most important task for antivirus software is to keep computers free from viruses. NVC is based on the advanced core technologies of Norman?s Scanning Engine, which accurately detects known and unknown computer viruses, worms and trojans. When infected files are detected, NVC cleans, isolates or deletes them immediately before the destructive code is activated.