Ofcourse they are. Majority of that stuff isn't executable, or if it is, it relies on exploits of viewers, so by using something else you are probably safe. Al

Ofcourse they are. Majority of that stuff isn't executable, or if it is, it relies on exploits of viewers, so by using something else you are probably safe. Also, there are sandboxes if you are unsure and you can convert to safer formats. Anyway, I yet have to meet somebody that was fucked up this way, I guess there are numerious easier options. Its way more probably that your country will hunt you, if you live in that lame country in which case VPN is a thing :)