A timeline of entrapment
As you are surfing the Internet one evening you click on a link, which creates a pop-up box asking if you wish to continue. You click 'yes', and the computer slows down, makes a few odd noises and then opens a window to a pornography site. You close the window and continue surfing, thinking no more about it.
A few months later you receive your phone bill, and almost have a heart attack when you realise it is five hundred dollars more than it normally is. The extra charge is for a 190 number, and is listed as 'Internet Access'. This is not your normal Internet Service Provider, and you assume there has been a mistake, and call Telstra to sort out the problem.
The helpful Telstra support person tells you there has been no mistake, and you need to call the company that leased the 190 number to sort out the problem. Upon calling the company, they confirm there has been no mistake and you will have to pay the charge. You tell them you have no memory of using any service of theirs, and ask them what service was provided. They refuse to tell you, claiming they need to protect their client's privacy and are under no obligation to inform you as to what service you are being asked to pay for.
You call Telstra again, and tell the helpful support person you didn't use the 190 service and won't be paying the charge. They reply that Telstra records show a 190 number was dialled from your phone, and if the charge is not paid the telephone service will be cut off.
You curse, threaten, plead, extol, and eventually pay the charge, ending up $500 out of pocket.
If people continue to run programs of questionable origin on their PCs then they deserve all they get. If they're unsure what they're doing, then why the hell don't they ask?
It's absolutely no use relying on warnings and instructions which are "supposed" to alert the user, because, let's face it, how many of these perpetrators follow the rules?
If you don't know - ask, it's that simple. I have very few customers ask me about such problems, I presume the rest are still paying off their phone bill.