Actually, this has to do with MIME-types, and is a browser flaw, not an OS-flaw.
Try serving that same jpeg with whatever the executable MIME-type is (application/executable
maybe?) and you'll see Firefox do what it normally does to executables. I can see a user
clicking "execute" here...
New Massive Botnet Twice the Size of Storm (Dark Reading)
Posted Apr 8, 2008 5:39 UTC (Tue) by muwlgr (guest, #35359)
[Link]
Had you ever tried to check your suggestion by yourself ? Firefox and Seamonkey do not offer
"open by default" or "execute" for downloadable executable files. Under Windows, at least.