The mobile carrier says it was testing the tracking technology, but it didn't rule out reintroducing permacookies in the future
In recent weeks, Verizon and AT&T have been caught up in a privacy firestorm
over their use of so-called "permacookies," a method of tracking what
their users do while browsing the Web with the intent of sharing that
data with advertisers. Verizon's permacookie program lives on, but
AT&T has ceased the practice, ProPublica reported on Friday.