https://www.techradar.com/news/phone-and-communications/mobile-phones/o2-we-can-monitor-iphone-tethering-data-use-609588
O2: We can monitor iPhone tethering data use | TechRadar
Jun 19, 2009 - Network says it can spot hackers cheating the system
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https://www.macrumors.com/2011/02/15/atandt-increases-tethering-data-plan-limit-to-4-gb/
AT&T Increases Tethering Data Plan Limit to 4 GB - MacRumors
Following through on its announcement from earlier this month that it would bump monthly data limits for customers on its DataPro + Tethering plan...
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