Here's what i know from my country:
When you connect to the internet without actually being connected by authorized workers, and you tap to some cable you found, there are some things that MIGHT happen:
1. You will most certainly NOT receive any kind of support from Qtel
2. You will have some legal issues EVEN IF you pay for your services.
3. Slim chances: nothing will happen and you will enjoy your connection... but as i said... slim chances...