AT&T’s massive data breach deepens crisis for Snowflake seven weeks after hack was disclosed

AT&T recently announced an investigation into a data breach affecting over 70 million current and former customers, with personal information leaked on the dark web. The breach involves 7.6 million current account holders and 65.4 million former customers, occurring approximately two weeks ago. While AT&T reported that the incident has not had a "material impact" on operations, the compromised data may include sensitive information such as social security numbers, full names, email and mailing addresses, phone numbers, dates of birth, as well as account numbers and passcodes. The company has not publicly disclosed the source of the leak as of yet.

AT&T has indicated that the leaked data appears to originate from 2019 or earlier and that there is currently no evidence of unauthorized access to its systems. The company is proactively contacting the 7.6 million affected customers to inform them of the breach and has reset their passcodes. Additionally, AT&T plans to provide complimentary identity theft and credit monitoring services to those impacted. External cybersecurity experts are assisting with the investigation, while AT&T encourages customers to monitor their account activity and credit reports closely. Carmen Balber from Consumer Watchdog has advised those affected to change passwords, monitor other accounts, and consider freezing their credit due to the exposure of social security numbers.

AT&T has faced multiple data breaches in the past, including a notable incident in March 2023 involving a third-party marketing vendor, which affected 9 million customers. Previous claims from a hacking group regarding data on over 70 million customers were disputed by AT&T but were later confirmed as authentic by customer reports.

AT&T’s massive data breach deepens crisis for Snowflake seven weeks after hack was disclosed

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