Quatrro Business Support Services Reports Data Breach Affecting 10,008 Washington Residents

What the notice says

Quatrro Business Support Services, Inc. notified the Washington State Attorney General of a data security incident involving files tied to the back-office support services Quatrro provides to client businesses. The notice states that Quatrro . According to the notice, an investigation found unauthorized access to certain files occurred . The files involved contained , and for some individuals also included a driver's license number, passport number, payment card number, financial account number, or health insurance policy number.

Notification and response

The notice says Quatrro first informed its client entities on August 20, 2026, and then on September 9, 2026. Quatrro states it is through Kroll, along with a dedicated call center for questions. Quatrro also says it has enhanced existing security measures to help prevent a recurrence.

What the notice leaves open

The notice does not specify how the unauthorized access occurred, which clients' files were involved, or how many individuals nationwide were affected beyond the Washington resident count stated.