AT&T and T-Mobile have paid fines and agreed to stop advertising that voice-mail systems are safe. The settlements are the culmination of a year-long investigation that was launched after complaints of unauthorized access. The district attorney said hacking into the voice mails allowed messages to be changed or erased, which could lead to “havoc” Neither carrier admitted any wrongdoing, but the fines were worth $59,300 and $25,000. Both companies said they are committed to user security and are encouraging subscribers to set up advanced passwords.”]
Source: https://www.darkreading.com/attacks-breaches/at-t-t-mobile-fined-for-voice-mail-security