Modem-jacking (also known as ‘dumping’) changes the dial-up number used to access the internet. These scams direct the victim’s computer to dial into the internet using an overseas or premium rate phone number, instead of using the normal ISP. The new provider may charge hundreds of dollars per hour.

Modem-jacking occurs when a program is downloaded onto your computer. Sometimes this program is downloaded without you agreeing (for example, as a virus when you click on a link in a spam email). In other cases, the program will be disguised as a program that allows access to certain websites such as adult or free music sites.

Sometimes, however, people agree to download these programs. For example, some adult websites offer access to their site with the cost discreetly added to your telephone bill. To enable this, you have to agree to a program being installed on your computer that will change the telephone number you use to connect to the internet.

If the full cost of connection is clearly given in the terms and conditions, these systems are not illegal. The website owner hopes that you agree to this attractive solution without checking the contract conditions. On the other hand, if you are misled about the charge rates, or if the program connects you to the internet without you agreeing, than this is modem-jacking and is a scam.

As more people move from dial-up connections to broadband, the opportunities for modem-jacking are decreasing. However, if you have a dial-up modem connected to your computer (or an internal dial-up modem), you may be vulnerable to modem jacking. If you have a dial-up modem that you are no longer using, you should disconnect it from your computer if you haven’t done so already.

Warning signs

You visit a web site that:

• encourages you to use an alternative payment method involving the installation of a piece of software
• enables your modem to re-dial on the internet
• offers to bill you through your telephone or telecommunications company.

You may also notice that:

• your telephone bill is much higher than it normally is
• your computer is running slower than normally
• there are new or unusual icons on your computer screen
• you hear your (dial-up) modem disconnecting and then dialling when you have not asked it to.

Hope that the above information is useful.
Cheers!
Patrick