At last official count, AT&T said it serves around 109 million wireless subscribers, and given that most of those customers are affected, this qualifies as one of the largest breaches ever in the United States.
AT&T on Friday issued a notice saying it suffered a data breach that affects « nearly all » of its cellular customers (not to be confused with a separate AT&T data breach earlier this year). At last official count, AT&T said it serves around 109 million wireless subscribers, and given that most of those customers are affected, this qualifies as one of the largest breaches ever in the United States. Fortunately, sensitive data sets such as social security numbers and other personally identifiable information were not compromised.Instead, the guilty party managed to download files containing AT&T records of calls of texts from a workspace on a third-party cloud platform. The stolen data includes records not only from AT&T’s cellular customers, but also from customers of mobile virtual network operators (MVNOs) piggybacking on AT&T’s towers, and AT&T’s landline customers who interacted with the affected cellular numbers.
