AT&T Big Data Breach
AT&T Big Data Breach was a significant impact compromising the personal information of over 51 million customers. The breached data included Social Security numbers, full names, email and mailing addresses, phone numbers, dates of birth, and AT&T account details, found circulating on the dark web from data originating in 2019.
This incident highlights vulnerabilities in AT&T’s data management practices. Previously, in March 2023, a breach at a third-party marketing vendor exposed the Customer Proprietary Network Information (CPNI) of 9 million customers.
These recurring breaches underscore the critical need for robust cybersecurity measures and proactive vulnerability management to protect sensitive data and maintain trust.