With the move, the software giant appears to be taking aim at McAfee Inc and Symantec Corp, its chief rivals in the PC security market.

• 对于这次行动，软件巨头（微软）似乎正在针对麦克菲公司与赛门铁克公司，因为这两个公司是计算机安全市场的主要竞争对手。