Data Breach Law Group Investigates the Langdon & Co. CPA LLP Data Breach
By Data Breach Law Group | Posted on August 21, 2025 · New Hampshire
Miami, FL — Data Breach Law Group is investigating a data breach involving Langdon & Co. CPA LLP, reported to the New Hampshire Attorney General on August 21, 2025. The firm is reviewing whether affected individuals have legal claims arising from the incident.
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.
If you were affected
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.
Did you receive a letter from Langdon & Co. CPA LLP?
A case review is free and confidential. Tell us about your letter and we will explain your options.