Antivirus software developer Intego claims to have discovered a new Trojan horse threat for Mac OS X dubbed OSX.RSPlug.E. The file attempts to trick users into installing an application that could let a malicious attacker install additional files without the user's knowledge.
OSX.RSPlug.E is a variant of a Trojan horse that was first reported in October 2007. It is apparently showing up on several pornographic Web sites and displays a warning that states "Video ActiveX Object Error," and includes an option to download the "missing Video ActiveX Object."
Once installed, a remote attacker could potentially add other files to the user's hard drive without their knowledge or permission. Like other Trojan horse threats, this one relies on user action and is not a virus threat that takes advantage of security weaknesses in Mac OS X.
For now, this potential exploit appears to be limited to the subset of surfers that visit pornography Web sites, but that doesn't mean it couldn't be adapted for other sites as well. The biggest threat OSX.RSPlug.E poses so far is that takes advantage of the trusting nature found in many Web surfers.

Jeff Gamet
11” MacBook Air 1.6GHz dual-core Intel Core i5: $999.00 Delivered

One way for Apple to counter such threats, would be to skip the QT Pro-idea and as they have done regarding most major graphics formats, implement a system-wide support for most video-formats. Thus, I think users would be more suspecting if they would be asked to install something like this. As it is now, a Macuser is being accustomed to QT asking you to install this and that since Mac OS doesnʼt support a variety of video formats etc. as it is, without add ons, some of which costs.