AT&T will begin to throttle data speeds during the first week of October, 9to5 Mac reported on Thursday. The carrier could move to throttle the data speeds of its biggest data users in an effort to ensure network stability for its first LTE devices, which are expected to launch later this year. It remains unclear how low AT&T will knock the throughput down to, but 9to5 Mac says Virgin currently forces data hogs down to 256Kbps until the next billing cycle after they use more than 2.5GB. T-Mobile also throttles its data speeds after users go over their monthly 5GB “unlimited” cap. The move should actually be beneficial for most AT&T customers looking for stable performance and will only affect those who use much more data than the average customer according to the report.