 On 29 September 2010, a year after its initial release, Microsoft announced that MSE had more than 30 million users. The Security Industry Market Share Analysis report of June 2011, published by OPSWAT, describes it as one of the most popular AV products in the world, with 10.66 percent of the global market and 15.68 percent of the North American market. The same report shows Microsoft as the number one AV vendor in North America with 17.07 percent market share, and the number four AV vendor worldwide.
