If you are among the more than 100 million AT&T subscribers, it’s crucial to assess your data. Reports indicate that hackers accessed and disclosed millions of AT&T clients’ private details after the ShinyHunters group purportedly compromised the data in April 2024, according to a recent article from Hack Read. The report asserts that approximately 86 million AT&T customer records have been revealed, encompassing full names, birth dates, telephone numbers, email addresses, physical addresses, and social security numbers. Hack Read mentioned that 44 million social security numbers were part of the leaked information.

The original hack by the ShinyHunters group involved encrypted social security numbers and birth dates, enabled by security vulnerabilities in the Snowflake cloud data platform, as reported earlier by Mashable. Now, Hack Read has disclosed that this sensitive information has since been decrypted.

We reached out to AT&T regarding the alleged customer data leak. An AT&T representative informed Mashable that “it is not unusual for cybercriminals to re-package previously disclosed data for financial profit.”

“We are aware of allegations that AT&T data is being offered for sale on dark web platforms, and we are undertaking a comprehensive investigation,” the representative added.

If you are an AT&T customer, your essential private information might be included in this latest leak. Nonetheless, if your data was compromised in this situation, it was likely — though not definitively — already compromised in the August 2024 National Public Data breach. Mashable has reported on this incident, which revealed “three decades’ worth of Social Security numbers on the online black market.”

You can check whether your information was compromised in that breach by utilizing a tool from Pentester, a cybersecurity firm. Go to npd.pentester.com, input your details, and view your list of compromised accounts.