Re:The FBI's internal guide for getting data from AT&T, T-Mo...
by pedalpete on Monday October 25, 2021 @06:50PM
(#28994160)
I believe they can also sell the data, though there may be some regulations on anonymized, or sold as a group to develop profiles and understanding for advertising purposes.
Perhaps that's what you mean by "mass surveillance", but I took that to mean specifically government surveillance.
I never thought before that ISPs would really keep track of every user's browsing history, but apparently as cheap as the disks are today, this has become true. Can't think of any use of this data other than for mass surveillance.