The Mather & Co CPAs LLC Data Breach: Incident Facts and Free Case Review
Mather & Co CPAs LLC is a professional accounting and tax services firm that manages sensitive financial and personal records for its clients. In the course of providing tax preparation, auditing, and financial consulting services, the firm typically collects and stores highly sensitive information including tax returns, Social Security numbers, and detailed financial account records. This data breach was officially reported to the Indiana Attorney General in 2026, confirming that unauthorized access to these systems occurred. If you received a data breach notification letter from the firm, it indicates that your personal or financial information may have been compromised during this incident. We recommend reviewing the provided notice carefully to understand the specific steps the firm is taking to assist you with identity monitoring and protection.
- State
- Indiana
- Breach date
- February 26, 2026
- Reported
- June 29, 2026
What to do if you were affected
These general steps can help limit the risk of identity theft and fraud after any data breach.
Stay alert to targeted scams
Be cautious of calls, texts, or emails that reference this breach. Legitimate organizations won't ask you to confirm sensitive details through an unsolicited message.
Keep your notification letter
Save the notice you received. It documents that your information was involved and is often needed to enroll in any credit monitoring offered or to join a related legal claim.
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