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Last Rated: April 23, 2007	BEST BUY! 1. Kaspersky Anti-Virus 6 Download price when reviewed: $50 ($35 renewal), Malware detection rate: 96%, Proactive detection: 51%, System slowdown: 10%, Ease of use: Superior, False-positive detections: 6, Bottom Line: This effective but expensive program has solid malware detection and the fastest outbreak-response time among currently tested competitors. Full Review • Test Report • Check latest prices	Check Latest Prices
Last Rated: April 23, 2007	2. Symantec Norton AntiVirus 2007 Download price when reviewed: $40 ($39 renewal), Malware detection rate: 96%, Proactive detection: 49%, System slowdown: 10%, Ease of use: Superior, False-positive detections: 3, Bottom Line: Symantec's solid program wins top marks for antivirus detection and cleanup, but its renewal and support costs are high. Full Review • Test Report • Check latest prices	Check Latest Prices
Last Rated: April 23, 2007	3. BitDefender Antivirus 10 Download price when reviewed: $30 ($22 renewal), Malware detection rate: 96%, Proactive detection: 61%, System slowdown: 124%, Ease of use: Superior, False-positive detections: 14, Bottom Line: BitDefender has excellent malware detection and a good price, but it's hamstrung by a noticeable (though not show-stopping) system slowdown. Full Review • Test Report • Check latest prices	Check Latest Prices
Last Rated: April 23, 2007	4. Eset NOD32 Download price when reviewed: $39 ($27 renewal), Malware detection rate: 90%, Proactive detection: 79%, System slowdown: 5%, Ease of use: Very Good, False-positive detections: 6, Bottom Line: NOD32 has the best proactive protection by far, but its overall malware detection is second-tier, and it has an overly technical interface. Full Review • Test Report • Check latest prices	Check Latest Prices
Last Rated: April 23, 2007	5. Panda Antivirus 2007 Download price when reviewed: $30 ($30 renewal), Malware detection rate: 90%, Proactive detection: 56%, System slowdown: 4%, Ease of use: Very Good, False-positive detections: 3, Bottom Line: This competitively priced option provides good proactive protection, average overall malware detection, and a poor disinfection rate. Full Review • Test Report • Check latest prices	Check Latest Prices
Last Rated: April 23, 2007	6. Alwil Avast 4 Antivirus Professional Edition Download price when reviewed: $40 ($28 renewal), Malware detection rate: 92%, Proactive detection: 37%, System slowdown: 4%, Ease of use: Good, False-positive detections: 5, Bottom Line: This program has decent overall malware detection, but poor proactive protection and an awkward interface. It also lacks U.S. phone support. Full Review • Test Report • Check latest prices	Check Latest Prices
Last Rated: April 23, 2007	7. Grisoft AVG 7.5 Anti-Virus Professional Download price when reviewed: $30 ($15 renewal), Malware detection rate: 91%, Proactive detection: 34%, System slowdown: 2%, Ease of use: Good, False-positive detections: 1, Bottom Line: The least-expensive program we tested, AVG has average overall malware detection, the worst proactive protection, and a clunky interface. Full Review • Test Report • Vendor's Web Site
Last Rated: April 23, 2007	8. Trend Micro AntiVirus plus AntiSpyware 2007 Download price when reviewed: $40 ($40 renewal), Malware detection rate: 82%, Proactive detection: 43%, System slowdown: 9%, Ease of use: Very Good, False-positive detections: 0, Bottom Line: Trend Micro's poor performance at detecting malicious software (overall and proactive) put it at the bottom of the barrel in our ranking. Full Review • Test Report • Check latest prices	Check Latest Prices

CHART NOTES: Street prices are as of 3/31/07. The PCW Rating is based on the program's malware detection rate (overall and proactive), performance (including scan-speed and system-slowdown tests), price, specs, and product design.

For details on how we evaluated the eight programs in this chart, see "How We Test Antivirus Software."

Malware detection tests used AV-Test.org's collection of 884,164 malware samples. Proactive detection tests used one-month-old signature files. System slowdown represents the amount of slowdown seen on a computer running Microsoft Office with the antivirus software installed, compared with the same computer without the software. False positives are the number of harmless files incorrectly identified as suspect, out of 20,000.