Yeah, and it's a darned shame. Back in the DOS days, before virii became so widespread, we shared our code freely and never gave it a second thought. Those criminals have ruined it for all of us.
I have to say that I don't understand this point. I used DOS quite a bit (My first computer was a 386SX 33, ages ago), and AFAIR DOS virii needed no source code to infect executable.
They just had to replicate their code somewhere in the binary file, add a simple jump to it as the first instruction, so they got executed at every program start, often acting like TSR programs, then gave back (or not, depending on their mood) hand to the main program. It was quick, efficient, and almost invisible.
I don't understand (and would sincerely like to be explained) what source code have to do with this matter.
Thanks,
T.
PS : As I'm far from being fluent in English, I would like to be very clear on the fact that I'm not saying I don't trust you on this point, but really want to understand what you mean. I'm afraid my words may be misinterpreted on this subject and considered as "offensive"