A significant data breach has compromised the personal information of over 86 million AT&T customers, with sensitive details including Social Security numbers leaked on a Russian cybercrime forum. The breach is linked to vulnerabilities in Snowflake, a cloud storage platform. Hackers exploited accounts that lacked multi-factor authentication. AT&T confirmed that many affected customers had their data stolen previously in 2019 but that more records were compromised. The company has notified law enforcement and urges customers to monitor their credit and protect their data.
A massive breach of personal data from more than 86 million AT&T customers has been leaked on the dark web, including fully decrypted Social Security numbers.
The breach appears linked to a large-scale cyberattack that exploited vulnerabilities in Snowflake, a US-based cloud storage platform used by major companies.
Hackers accessed AT&T's data by infiltrating accounts that lacked multi-factor authentication, a basic security feature that requires more than a password to log in.
Cybersecurity researchers urge customers to monitor their credit reports and take immediate steps to protect themselves. Law enforcement is actively investigating.
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