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TransUnion admits 4.5M affected after third-party support app breached

ID: b4668cbd-20b6-58a3-b0cd-988f3e81f560

STIX ID: report--b4668cbd-20b6-58a3-b0cd-988f3e81f560

Feed Name: The Register (Security)

Threat Score
65/100

Date Published: 2025-08-28

Date Updated: 2026-04-26

Author: Connor Jones

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TransUnion disclosed an incident in which unauthorized access to a third-party application supporting US consumer operations exposed limited personal information for about 4.46 million individuals; the company says credit reports and core credit data were not impacted. TransUnion contained the issue, engaged external cybersecurity and law enforcement, and is providing 24 months of credit monitoring and fraud assistance to affected consumers.

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