T-Mobile is getting fed up with users who are using their unlimited data plans to tether ridiculous amounts of data. As is, this plan already affords up 7GB just for tethering purposes. Like most carriers, one this limit is reached, data slows down considerably, The Verge reports.

Their unlimited 4G LTE data plan at $80 allows tethering under the Smarthphone Mobile Hotspot feature. Once the limit is reached, users have the option to add more. However, "hackers" are using inventive ways to go around this, T-Mobile CEO John Legere said.

He laments that certain apps, especially on Android, hide tether data, root phones, or write codes to mask tethering use. It is a small group that does this intentional sketchy activity. He says around 1/100 of their 59 million customers are engaged in this sort of data theft.

However small this group is, this hacking minority is going around the system and using as much as 2TB (2,000GB) per month. IT World quotes Legere as saying, "I'm not sure what they are doing with it - stealing wireless access for their entire business, powering a small cloud service, providing broadband to a small city, mining for bitcoin -- but I really don't care!"

Legere also revealed that they are going after the top 3,000 users who know exactly what they are doing. Apparently, they have developed software to combat the malicious of their bandwidth. Those caught will first receive a warning. They will then lose access to the unlimited 4G offer and be moved to an entry-level and limited 4G data plan.

The crackdown will be done to protect the other users of T-Mobile. Legere adds, "If their activities are left unchecked their actions could eventually have a negative effect on the experience of honest T-Mobile customers." He ends with, "Not on my watch."