How can I know if someone hacked my IP address?

[Jesus]

The thing is that there is a group of people that are trolling ullying me because some girl didnt like me.

In their facebook accounts they mention the theme I touch for example, diabetes, I made a question on diabetes and they talk about diabetes. Is there any other way besides a keylogger to spy on someones computer?

I know I man that says that he can see the persons IP address in youtube,,,but he is not my friend.

It seems that a ''friend'' of mine was convinced by them, maybe I am wrong, and he was convinced that I am the one who is trolling them. This ''friend'' had an Anonymous friend and another user accounts with rare names without information. Seems like someone is trying to disturb me.

How can I detect if someone is spying on my computer?

How can I stop this?

[Fred]

NOBODY can hack an IP address. And an IP address and a few cents or pennies will get them a VERY small bag of sweets. Unless you have messed with settings on your router and computer firewalls it is almost impossible for someone to hack your machine. Even then they would need you to have left open ports with open server programs to allow them access, and then would need to find your computer user name and password. so unlees you have randomly followed links posted by these people you should be safe. Of course if you were ever stupid enough to do so it is highly likely they have used one to install spyware on your machine. So download the free scanner from http://malwarebytes.org and run the full scan.

[nilelai]

use sniperspy: http://www.monitoring-softwares.com