Thanx for the personal attack on my friend.
was assmuming that your buddy does not read the forums.
Also there are things called rogue programs that look like the real thing.
Depends on how many checks you make that the programm is legit. Only run programmes from sites that you know have more to loose than gain from supplying you with a virus. I dont think i have every got to the stage where a virus scanner has stoped me from intalling a program with a virus in it, there have been false positves though. cellphones can only get viruses if you intentoally download the virus as well.
If someone hacks the app site and places one on there then it could be downloaded and used without the user knowing it is a virus.
Nothings imposible but thats a really big if.