When you installed Microsoft Security Essentials, you agreed to join Microsoft SpyNet using a basic membership. You have the following membership options:
Basic membership—Security Essentials sends basic information to Microsoft about software that Security Essentials detects, including where the software came from, the actions that you apply or that Security Essentials applies automatically, and whether the actions were successful. In some instances, personal information might unintentionally be sent to Microsoft. However, Microsoft will not use this information to identify you or to contact you.
Advanced membership—In addition to basic information, Security Essentials sends more information to Microsoft about malicious software, spyware, and potentially unwanted software, including the location of the software, file names, how the software operates, and how it has affected your computer. In some instances, personal information might unintentionally be sent to Microsoft. However, Microsoft will not use this information to identify you or to contact you.
To change your Microsoft SpyNet community membership
Click Settings, and then click Microsoft SpyNet.
Select the level of participation that you want by clicking Basic membership or Advanced membership, and then click Save changes. If you're prompted for an administrator password or confirmation, type the password or confirm the action.
To learn more about Microsoft SpyNet: