The Maine Office of the Attorney General disclosed a data breach affecting KBF CPAs, occurring between November 8–14, 2022, but discovered only on June 6, 2023. The incident stemmed from external system hacking, compromising sensitive data—including Social Security numbers—of 1,112 individuals, among them 3 Maine residents. While the exact method of exploitation remains undisclosed, the breach exposed personally identifiable information (PII), posing risks of identity theft and financial fraud. In response, KBF CPAs offered 12 months of complimentary credit monitoring to affected parties, a standard remedial measure for such incidents. The delayed detection (over six months) suggests potential gaps in cybersecurity monitoring, raising concerns about the firm’s ability to prevent or swiftly mitigate future threats. The breach underscores the persistent vulnerability of accounting firms, which handle high-value financial and tax data, to targeted cyber intrusions by external actors.