In May 2017, Keller Williams Realty, Inc. experienced a data breach due to unauthorized access to its systems between May 6 and May 10. The incident was reported by the Washington State Office of the Attorney General on July 18, 2017. The breach compromised sensitive personal information of 9,425 individuals, including names, Social Security numbers, and potentially other personal data. The unauthorized access exposed highly confidential details, posing significant risks such as identity theft, financial fraud, and long-term reputational harm to affected individuals. Given the nature of the stolen data—particularly Social Security numbers—the breach had severe implications for the victims, requiring immediate mitigation measures like credit monitoring and identity protection services. The incident underscored vulnerabilities in Keller Williams’ cybersecurity defenses, raising concerns about the company’s ability to safeguard customer data. While the exact method of the breach (e.g., phishing, system exploitation) was not detailed, the exposure of such critical information classified the event as a high-severity data leak with lasting consequences for both the company and the impacted individuals.