Program the Tunneling virus by selecting [Turn on] next to your Personal Computer, and then selecting the Tunneling Virus from the list of viruses available for you to code.
In order to be able to code the Tunneling Virus, you need to have completed the Intermediate Programming Course.
You can sell this virus for networth, or use it for it’s corresponding crime.
The Tunneling Virus takes 40 Days to code
To see the other viruses that you can code, and some more information, go here.