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TransUnion says 4.4 million consumers' data compromised in hack

Unauthorized access to a third-party app exposed limited personal data of over 4.4 million US consumers; TransUnion offers 24 months of free credit monitoring to affected individuals.

  • TransUnion announced a data breach on July 28, 2025, in Illinois, affecting over 4.4 million U.S. consumers.
  • The breach happened through unauthorized access to a third-party application used in TransUnion's U.S. consumer support operations.
  • The breached data contained limited personal details, including Social Security numbers, but did not include credit reports or essential credit data.
  • TransUnion identified the breach two days after it took place and is providing affected individuals with two years of complimentary credit monitoring and services to help protect against identity theft.
  • This breach highlights ongoing cybersecurity risks in credit reporting firms and underscores calls for consumers to enhance security by freezing credit and monitoring accounts.
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This TransUnion Data Breach Affected 4.4 Million Consumers

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BleepingComputer broke the news in on Thursday, August 28, 2025.
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