The antivirus and PC care package nabbed 15.4 percent of security suite sales at retailers such as Best Buy and Amazon.com, according to NPD's data. The average price was $29.67, well below. Online at Amazon.com, OneCare is .
"Microsoft's penetration pricing strategy is clearly working and they are capturing significant unit share," NPD analyst Chris Swenson told CNET News.com. "I think many in the industry were surprised with how well Windows Live OneCare did in its first month on the market."
OneCare, three years after Microsoft announced its . The product combines antivirus, anti-spyware and firewall software with backup features and several tune-up tools for Windows PCs. and have both announced new products to rival OneCare.
"We see our comprehensive 'PC Care' approach as a new and important direction for consumer PC services and are encouraged to see that more consumers are taking steps to effectively protect and maintain their PCs," Samantha McManus, a business strategy manager at Microsoft, said in an e-mailed statement.
Microsoftin June, according to NPD's data. It particularly gained on market leader Symantec, which saw its unit share drop 10.1 percentage points from May. At the same time, McAfee lost 3.3 points and Trend Micro dropped 1.3 points.
Symantec noted that NPD covers retail sales only, and does not include consumer sales through Internet service providers and PC makers, for example. "We just had a record June quarter in consumer sales," said Mike Plante, a marketing director at the company. "You can't really draw market share conclusions from the NPD data alone, particularly with just a month of data."
Symantec also remained the clear leader in the retail channel, with 59.8 percent of security suite sales, NPD said. Microsoft was second, followed by Trend Micro with 8.9 percent and McAfee with 7.1 percent.