ESET NOD32 Antivrus Version 3.0

Best Detection ESET is the leader in proactive, precise threat protection with more Advanced+ awards for superior threat detection than any other vendor since May 2005. (source AV-Comparatives.org)

ThreatSense™ technology detects more than 75% of new, unknown, threats heuristically - even before a signature update is available. It detected most variants of MyDoom, Netsky, Bagel and Mytob heuristically. (source AV-Test.org)
ESET ThreatSense is the only antivirus technology that has not missed a single In-the-Wild virus in rigorous Virus Bulletin VB100 testing since May 1998. (source virusbtn.com)

Low False Positive Rate
A very low false positive rate ensures that the "good" files on your computer will not be flagged as malware. This is due to the intelligent synergistic use of advanced heuristics and generic signatures. ESET ThreatSense has produced the fewest false positives in its long history of testing with Virus Bulletin.

Fastest Performance
42 MB/sec average scanning rate on Windows XP SP2 (source: Virus Bulletin).
Up to 34 times faster than the leading brands under Windows XP

Minimal Resource Utilization
Optimized engine uses approximately 38 MB memory on average.
Uses less than 40M of disk space.