I downloaded an .mpg file and when I double clicked it, it launched Windows Media Player and started to play.

Then a bunch of browser windows started opening, directed to porn sites. Then my anti-virus software said I had js/seeker virus/trojan.

Anyone know how the .mpg file was able to do this? Are the holes in Windows Media Player? Hidden File extension (not likely, since phex showed it as .mpg)?


Help.
Thanks.