It starts strong to the free antivirus for Microsoft, Security Essentials, which has already been downloaded by 1.5 million times in one week of availability according to Microsoft. Microsoft reaffirms therefore welcome its free antivirus solution on a highly competitive market, however. It must be said that the campaign launch went very well, with a proven efficacy and rapid consumption shy resources.

Microsoft then has the opportunity to make a first statistical analysis of data collected by Security Essentials. In one week, and 4 million are malware that have been identified by Microsoft on some 535 752 infected machines, or one third of machines with the virus. 27% of these infections affect the U.S. market, 3% in the others market What deserves support on the Security Essentials popularity in the United States.