Hackers stole data related to a specific part of Verizon’s operations marketed to government agencies and first responders, and are advertising that data for sale on a Russian-language cybercrime forum
https://www.404media.co/hackers-advertise-stolen-verizon-push-to-talk-call-logs/
The breach doesn’t appear to impact the main consumer Verizon network. The hackers broke into a third party provider and stole data on Verizon’s push-to-talk (PTT) systems, which are a separate product marketed towards public sector agencies, enterprises, and small businesses to communicate internally.