Basic membership means that Security Essentials will send information about software it detects to Microsoft.

You can chose between basic and advanced membership. This is the mandatory membership in Microsoft SpyNet. I have only one complaint about Security Essentials. There is no doubt that Microsoft has the resources to build up a mighty strike force against Internet terrorism. Of course, it was only a matter of time until Redmond caught up with the specialists in this field. (Why doesn't UAC have a comparably low false-positive rate?) First tests with Microsoft Security Essentials have already shown that it also performs quite well. But they improved steadily and, according to AV Comparatives, Microsoft's detection rate is now second only to AVIRA and the false positive rate is the lowest of all 16 tested antimalware products. When Microsoft entered the antimalware business, the detection performance of their scan engines was lousy. Virus and rootkit analysis is a tough business and you need an armada of experts for it. The most difficult part certainly is to deliver the virus & spyware definitions against the latest threats before the competitors do. However, the features of the scan engine and the user interface are not decisive for an antivirus product. Microsoft Security Essentials detection rate Actually, reliable on-access scanning is the only feature that really matters. Other free antivirus tools have more to offer, but, in my view, most of their features are superfluous anyway. In addition, it can quarantine or remove malware based on the severity level and it allows you to exclude folders, file types, and processes. It supports real-time scans, automatic signature updates, full and partial scans, and scheduled scans. First of all, Security Essentials indeed has all of the essential features that an antivirus software requires. On the other hand, can a 4.7 MB download (3.7 MB for 圆4) really be a serious threat? I think it can.

Ms security essentials