Terry P. Moosmann CPA PC, a local accounting and tax preparation firm in Washington, Missouri, was listed on the ransomware leak site of the group "thegentlemen" on July 16, 2026. This indicates a potential data breach, though no official notification from the company has been published.
The listing stated that internal files were exfiltrated during the attack; however, the exact types of data compromised and the number of individuals affected remain unconfirmed. Due to the nature of an accounting firm, potential data types exposed could include client names, Social Security Numbers, financial account information, and tax ID numbers, but these are not officially confirmed.
As of July 17, 2026, there are no official statements, state attorney general filings, or confirmed details regarding affected individuals. Details about this incident may emerge over time, and official notices may be delayed.