 The announcement and debut of Microsoft Security Essentials was met with mixed responses from the AV industry . Symantec , McAfee and Kaspersky Lab , three competing vendors , claimed it to be inferior to their own software . Jens Meggers , Symantec 's vice president of engineering for Norton products , dismissed it as " very average – nothing outstanding " . Tom Powledge of Symantec urged his customers to be mindful of what protection they chose , bearing in mind that OneCare offered " substandard protection " and an " inferior user experience " . Joris Evers , director of worldwide public relations for McAfee stated " with OneCare 's market share of less than 2 % , we understand Microsoft 's decision to shift attention to their core business . " Justin Priestley of Kaspersky stated that Microsoft " continued to hold a very low market share in the consumer market , and we don 't expect the exit of OneCare to change the playing field drastically . " 
