US-based global insurance brokerage and risk management firm Arthur J. Gallagher suffered a data breach after a ransomware attack on its systems. The compromised information includes Social Security number, driver's license, passport or other government identification number, date of birth, username and password, employee identification number, financial account, and other personal information of its clients. The company has informed impacted customers about the breach and has asked them to be alert about any suspicious activity.

The Maine Office of the Attorney General reported a data breach involving Arthur J. Gallagher & Co. on June 30, 2021. The breach was detected on September 26, 2020, and it involved unauthorized access to internal systems, affecting approximately 7,376 individuals, including 12 Maine residents. The compromised data included personal information such as Social Security numbers and financial account details, and the company offered 24 months of identity theft protection services through Kroll.

The Maine Office of the Attorney General reported a data breach at Arthur J. Gallagher & Co. between June 3, 2020, and September 26, 2020, due to a hacking incident. The breach affected 5,577 individuals, including 2 Maine residents. The compromised information included Social Security numbers.

The California Office of the Attorney General disclosed a data breach affecting Arthur J. Gallagher & Co. on December 6, 2019, though the incident itself occurred earlier on March 15, 2019. The breach notification lacked critical specifics, including the number of impacted individuals and the types of compromised data. Given the absence of explicit details, the nature of the breach suggests potential exposure of sensitive information—possibly including employee or customer records, financial data, or proprietary corporate details—though the exact scope remains unverified.The delayed disclosure (nearly nine months after the breach) raises concerns about transparency and incident response protocols. Without confirmation of stolen data or malicious exploitation, the breach’s immediate consequences appear limited to reputational harm and regulatory scrutiny. However, the lack of clarity on affected data categories (e.g., personal identifiers, financial records, or internal documents) leaves uncertainties about long-term risks, such as identity theft, fraud, or compliance violations.As a global insurance brokerage and risk management firm, Arthur J. Gallagher & Co. handles vast volumes of sensitive client and employee data, making such breaches particularly critical. The incident underscores the need for robust cybersecurity measures and timely breach notifications to mitigate potential fallout.