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Cyber Threat
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Ransomware victim Financial Services

thinkmarkets.com

Listed by Chaos on · organisation based in Australia

www.thinkmarkets.com

Disclosed
Dec 8, 2025
Leak-site listing date
Threat group
Chaos
105 victims listed
Country
Australia
#10 most targeted
Sector
Financial Services

ThreatAI analysis

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

About the Chaos group

Chaos is a ransomware-as-a-service operation that emerged in early 2025, likely formed by former BlackSuit/Royal members, offering cross-platform ransomware for Windows, Linux, ESXi, and NAS to affiliates recruited on the RAMP dark web forum, excluding CIS/BRICS countries and hospitals from targeting. Chaos has listed 95 victims since February 2025.

Incident analysis

thinkmarkets.com was listed by Chaos ransomware, a group with 105 victims recorded in this database. The listing appeared on the group's leak site on December 8, 2025.

thinkmarkets.com is based in Australia and operates in the Financial Services sector. Australia ranks #10 worldwide for ransomware disclosures, with 409 victims in this database.

Sector context. Financial sector organisations are targeted for their access to funds, sensitive financial data, and the reputational damage a public breach can cause. Regulatory requirements also increase recovery costs.

Chaos typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was thinkmarkets.com attacked by ransomware?

Yes. thinkmarkets.com was listed as a victim of the Chaos ransomware group on December 8, 2025. The organisation is based in Australia and operates in the Financial Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked thinkmarkets.com?

thinkmarkets.com was attacked by Chaos ransomware. Chaos is one of the most active ransomware groups, having claimed 105 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the thinkmarkets.com ransomware attack occur?

The ransomware attack on thinkmarkets.com was disclosed on December 8, 2025. 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 thinkmarkets.com ransomware attack?

The specific data stolen from thinkmarkets.com 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 Financial Services organisation, thinkmarkets.com likely held financial records, client data, and transaction histories.

How can organisations protect against Chaos attacks?

To defend against Chaos 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.