Many individuals reported to the MySpace abuse team about very realistic fake update popup.
This thing is quite realistic. And if you click “Download”, you get an offer to install a nasty little Trojan. The trojan, “updateKB890830.exe”, downloads from a site that looks like a Microsoft url, so it’s all quite realistic to the user.
Once infected, your computer will display fake security alert stating that tells you to install a rogue antispyware application to delete the infection.
Download and run MalwareBytes Anti-malware (MBAM) for removing the trojan.