Redmond has released data from the first week (between September 29 to October 6) of Microsoft Security Essentials (MSE) usage, the company's free, real-time consumer antimalware solution for fighting viruses, spyware, rootkits, and Trojans. The product was made generally available to consumers in 19 countries in eight languages, and in the first week Microsoft says it has seen well over 1.5 million downloads. Number of downloads is never equivalent to the number of installs though: the software giant can't say how many machines have the software installed, but it can weigh in on the number of infected machines.

