Seven months ago, Google officially released its Android app, the Android Market Security Tool, in response to an outbreak of malicious apps being served then on the Android Market website. Just a few days after, a trojanized version of the said app had been spotted, baiting users into downloading and installing it on their smartphones. This was served on third-party download sites. AV companies already detect the trojanized app.
If your antivirus software detects the Android Market Security Tool retrieved from the Android Market as malicious, even up to this point in time, let us reassure you that this app is clean. If you found yours elsewhere, however, more than likely your app is a fake one. It’s best to remove it from your phone (or PC if you have a copy of it in there, too) and get the legitimate copy from the Market.
Jovi Umawing (Thanks to Dean Bueno)