The following ISP’s (Internet Service Providers) have been known to release their customers personal information to Copyright Trolls and thus allowing them to send settlement scam letters to scare people into paying them. If you have one of these ISP’s your liable to be scammed by Copyright Trolls.
Comcast (Also known as Xfinity)
This is proven by this court document. At the bottom it lists what ISP’s have given up names or not. You can read it or just look at the screen shot below. Some are still pending. If other ISP’s have given up real names let us know. Some of them in the court document are pending.
Only one ISP to our knowledge states it will not be able to or would not hand over names. That ISP is Clearwire. If any other information is known please share.