Impact & Downstream Threats
This breach carries critical risk due to the nature of exposed data fields and the scale of affected records.
- Financial fraud using exposed financial profile data
- Identity verification bypass using name + date of birth combination
- SIM swap attacks where phone numbers are present
- Targeted phishing campaigns using exposed email addresses
- Doxxing risk from physical address exposure
Breach Intelligence
Executive Summary
In September 2015, the US based credit bureau and consumer data broker Experian suffered a data breach that impacted 15 million customers who had applied for financing from T-Mobile. An alleged data breach was subsequently circulated containing personal information including names, physical and email addresses, birth dates and various other personal attributes. Multiple Have I Been Pwned subscribers verified portions of the data as being accurate, but the actual source of it was inconclusive therefor this breach has been flagged as "unverified".
About Experian
Credit reporting and data analytics company.
Data Points Exposed
Dark Web Verification
Status: Confirmed
- Dataset containing approximately 110.2M records identified in breach intelligence sources.
- The data is indexed and searchable across breach notification platforms.
Recommended Actions
⚠️ Do not assume this is low sensitivity.
Non-clients may request a breach impact review.
Frequently Asked Questions
In September 2015, Experian experienced a data breach that exposed approximately 110.2M records containing personal information.
The exposed data includes fields such as credit status, date of birth, email address, ethnicity or race:ethnicity, family structure.
Approximately 110.2M records were affected based on current breach intelligence.
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- A public-facing individual
- A high-profile executive
- A customer of Experian
- Or concerned about credential reuse
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