The CEO of the Australian telco immediately apologized but sources says up to 9 million customers may be affected because foreign hackers exploited a leaky API.
Hold Security found files on the dark net with emails and social security numbers for 23mn people who were customers of AT&T.
The US comms provider said hackers obtained information about 125 businesses that use their services.
Details for 5.4 million accounts were breached, prompting Twitter to find new ways to shift responsibility for privacy on to users.
The mobile operator will also spend another $150mn on upgrading security following a 2021 privacy breach that compromised data relating to 76.6 million people.
The telco played down the importance of the breach whilst the hacker mocked ‘idiot’ employees for believing he was from PC support.
A 1980’s phreaker said she stole the phone numbers of LA celebrities by checking unlocked cabinets in the office of Pacific Bell.
Compromised data was used to port the accounts of some UScellular customers to other networks.
Social engineering was identified as the top cybersecurity risk per respondents to the RAG RAFMCS Survey 2021.
A stock exchange filing revealed hackers gained access to the Electronic Data Transfer service that Syniverse provides to 235 telcos and other businesses.