Aon plc has sustained a cyberattack.

The British broker with global reach disclosed this information in a report filed on February 25 on the website of the Securities and Exchange Commission (SEC), the U.S. federal agency responsible for regulating and overseeing financial markets.

Specifically, Aon states, in the legal form that every public company affected by a “major event” is required to file in order to inform investors, that on February 25, it has “identified a cyber incident impacting a limited number of systems.”

“Promptly upon its identification of the incident, the Company launched an investigation, and engaged the services of third-party advisors, incident response professionals, and counsel,” Aon said.


The brokerage giant assures the SEC that the “incident has not had a significant impact on the Company’s operations,” adding that “although the Company is in the early stages of assessing the incident, based on the information currently known, the Company does not expect the incident to have a material impact on its business, operations or financial condition.”

A growing list of insurers and brokerage firms has suffered cyberattacks in recent years. Arthur J. Gallagher & Co., another major brokerage on the international scene, was hit by a ransomware attack in October 2021. In March 2021, insurer CNA was also the target of a cyberattack.

North American risk managers put cyberattacks atop the list of threats of concern in 2021, an Aon report stated.