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TruScan proactive threat scans provide an additional level of protection to your computer. Proactive threat scans complement your existing antivirus, antispyware, intrusion prevention, and firewall protection technologies.
Antivirus and antispyware scans rely mostly on signatures to detect known threats. Proactive threat scans use heuristics to detect unknown threats. Heuristic process scans analyze the behavior of an application or a process. The scan determines if the process exhibits characteristics of threats, such as Trojan horses, worms, or keyloggers. This type of protection is sometimes referred to as protection from zero-day attacks.
TruScan proactive threat scans are enabled when both the Scan for Trojan horses and worms or Scan for keyloggers settings are enabled. If either setting is disabled, the Status page in the Symantec Endpoint Protection client shows Proactive Threat Protection as disabled.