Trojans are common to nearly any operating system out there.
This particular OS is no exception.
Aside from the users who run with full root access (which they'd have to actually work at), the typical user will double click on the picture, see a warning that it's an application (and have to agree to that), then they'd have to enter the admin password to install the thing. This is the case on OSX from 10.1 (IIRC) on up.
Normal images open with Preview in OSX by default w/o any of that rigamarole, so unless the user is incredibly dense (hey, it happens), even the most technically illiterate Mac user will likely think "wait a minute, this isn't right..."
Now compare all that to the WMF bug on most machines.
This particular OS is no exception.
Aside from the users who run with full root access (which they'd have to actually work at), the typical user will double click on the picture, see a warning that it's an application (and have to agree to that), then they'd have to enter the admin password to install the thing. This is the case on OSX from 10.1 (IIRC) on up.
Normal images open with Preview in OSX by default w/o any of that rigamarole, so unless the user is incredibly dense (hey, it happens), even the most technically illiterate Mac user will likely think "wait a minute, this isn't right..."
Now compare all that to the WMF bug on most machines.
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Link to this comment: http://www.securityfocus.com/comments/newsbriefs/142/618#618