Websense Security Labs has detected another spam attack aimed at Twitter users.

The malware poses as a Twitter password reset notification, arriving through email, and attempts to install a rogue antivirus software. When users click the link supplied in the compromised email, they are prompted to download a malicious file named password.exe, according to Websense.

The downloaded file, Protection Center Safebrowser, tricks users into thinking it is a safe, legitimate software by actually displaying some of the dangerous files it installs onto a user's computer.

The security company said it has seen nearly 55,000 instances of the malicious spam email affecting users' desktop security so far.

Twitter is a social networking website built on an open API platform. In the fall of 2009, the Pew Internet & American Life Project reported that 19 percent of internet users said they used Twitter, or a similar service, to share information about themselves on the internet. ADNFCR-2553-ID-19821828-ADNFCR