The Langdon & Co. CPA LLP Data Breach: Reported Filing Facts
Langdon & Co. CPA LLP 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, the firm typically collects and stores highly sensitive information, including Social Security numbers, tax identification numbers, and detailed financial account records. This data breach was officially reported to the New Hampshire Attorney General in 2025, confirming that unauthorized access to firm systems occurred. If you received a data breach notification letter from Langdon & Co. CPA LLP, it indicates that your personal or financial information was likely contained within the compromised files. We recommend reviewing the letter carefully to understand the specific scope of the incident and the identity monitoring services being offered.
- State
- New Hampshire
- Reported
- August 21, 2025
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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