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Contents of the Data Breach Notification Letter

Internal Revenue Manual Part 10. Security, Privacy, Assurance and Artificial Intelligence · 2026-10-03 edition · updated 2026-10-04 · United States

The IRS will notify individuals and businesses potentially impacted by IRS data breaches (including intentional unauthorized accesses or disclosures (UNAX/UNAD) resulting in proposed disciplinary or adverse action against an IRS employee) using Correspondex Letter 4281C, IM Breach Notification Letter; however, the IRS may use a unique letter when deemed necessary and appropriate.

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▸Contents — Internal Revenue Manual Part 10. Security, Privacy, Assurance and Artificial Intelligence
Internal Revenue Manual Part 10. Security, Privacy, Assurance and Artificial Intelligence

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