Cyber Threat Intelligence
CTI Academy Sponsor CTI Academy
AO
Ransomware Victim Professional Services

Aon

Ransomware attack by Termite · Disclosed October 7, 2026 · 🇺🇸 United States

www.aon.com

Date Disclosed
Oct 7, 2026
2026
Threat Group
Termite
56 total victims
Country
🇺🇸 United States
Industry
Professional Services

ThreatAI Analysis

Compiled from this incident record and the threat intelligence profile for Termite. Figures and technique mappings are quoted from the source data, not inferred.

Aon was listed on Termite's dark web leak site operated by the ransomware group, marking its first known breach since November 2024; Aon is an international professional services firm providing risk management, insurance, reinsurance, health insurance, retirement plans and talent advisory.

About Aon

Aon plc is an international professional services firm. It has two divisions: Risk Capital, which provides brokerage and consulting services for risk management, insurance and reinsurance, and Human Capital, which provides services related to health insurance, retirement plans, pension plans, and talent advisory.

Source record: ransomware.live

About the Termite group

Termite is a ransomware group first identified in late 2024 using a modified version of Babuk ransomware code; its most notable attack was the November 2024 breach of supply-chain software firm Blue Yonder, claiming 680 GB of exfiltrated data and disrupting major customers including Starbucks. Termite has listed 49 victims since May 2023.

Incident Analysis

Aon was targeted by Termite ransomware, one of the most active ransomware groups in our database with 56 confirmed victims globally. The attack was disclosed on October 7, 2026, when Aon appeared on the group's dark web leak site.

Aon is based in United States , operating in the Professional Services sector. United States ranks #1 globally for ransomware attacks, with 9,923 victims in our database.

Sector context: Organisations in this sector hold valuable data and operational systems that ransomware groups seek to exploit for financial gain through encryption and data exfiltration.

Termite typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats — paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Oct 7, 2026 10:00 UTC.

Frequently Asked Questions

Was Aon attacked by ransomware?

Yes. Aon was listed as a victim of the Termite ransomware group on October 7, 2026. The organisation is based in United States and operates in the Professional Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked Aon?

Aon was attacked by Termite ransomware. Termite is one of the most active ransomware groups, having claimed 56 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the Aon ransomware attack occur?

The ransomware attack on Aon was disclosed on October 7, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the Aon ransomware attack?

The specific data stolen from Aon has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Professional Services organisation, Aon likely held sensitive business data, client information, and operational records.

How can organisations protect against Termite attacks?

To defend against Termite and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.