Robert Arshagouni, an accounting and bookkeeping practice in Chatsworth, California, disclosed a data breach after an unauthorized party accessed its internal systems between January and February 2026. The company notified clients that sensitive personal information may have been exposed.
The breach involved client names, Social Security numbers, and financial account information. The number of affected individuals is not publicly specified in the California notice, but a related Massachusetts filing reported one Massachusetts resident as affected.
Details about the full scope of the incident and any further actions remain unclear, and additional information may emerge as investigations continue. Notices were filed with the California Attorney General on August 5, 2026, and with the Massachusetts Attorney General on June 29, 2026.