thinkmarkets.com Listed by chaos Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
thinkmarkets.com has been listed by the Chaos ransomware group, which claims to have exfiltrated internal files; the incident came to light on 8 December 2025. Users are advised to review their accounts and monitor for unusual activity.
What happened
The incident was reported on December 8, 2025, when chaos added thinkmarkets.com to its public leak site. No figure has been published for the number of people or records involved. The only confirmed element is that internal files were removed from the organisation’s systems.
Further details on the timing of the intrusion, the method of access, or the volume of data have not been disclosed.
Inside chaos
Chaos is a ransomware operator that publicly claims responsibility for intrusions by listing victim names on its leak site. The group typically demands payment in exchange for not releasing stolen material and has been linked to multiple incidents across different industries in recent years. Its listings represent the group’s own assertions and are not independently verified in every case.
thinkmarkets.com and its sector
ThinkMarkets was founded in 2010 and operates as a multi-asset online brokerage. Its headquarters are in London and Melbourne, with additional offices across the Asia-Pacific region, the Middle East and North Africa, Europe, and South America. Brokerage platforms routinely process client account information, transaction records, and internal operational documents.
A compromise at such a firm can affect both individual account holders and the firm’s regulatory standing, given the financial nature of the data it handles.
What was likely exposed
The only information released states that internal files were exfiltrated. The precise categories of data within those files remain undisclosed. Organisations of this type commonly store client identification details, account credentials, transaction histories, and communications, but it is not confirmed whether any of these were among the files taken.
What's at stake
Individuals whose information appears in the exfiltrated files could face risks of account takeover or targeted fraud if login credentials or personal identifiers are present. The firm itself may face regulatory scrutiny and costs associated with investigation and remediation. At present, the scale of these potential consequences cannot be quantified because the contents of the files have not been described publicly.
Were you affected?
Begin by reviewing recent statements or emails from ThinkMarkets for any official notification. Change passwords for your brokerage account and any linked email addresses, and enable multi-factor authentication where available. Monitor bank and credit accounts for unusual activity. You can also run a free exposure scan of your email address against known breach datasets to see whether your information has appeared in public listings.
- Review official communications from the company
- Update account passwords and enable multi-factor authentication
- Monitor financial statements for suspicious transactions
- Run a free email exposure scan against known breach records
AICompiled with AI assistance from public sources and published under our editorial standards.
How this breach connects
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Publicly posted by chaos — unverified claim, pending independent verification
Breach listings — particularly those originating from ransomware or leak sites — are third-party claims that may be unverified, incomplete, or inaccurate. A listing does not by itself confirm that a breach occurred or that any specific data was exposed. Severity is an automated assessment, not a definitive rating. Verification status is shown where available.
Attributions to threat groups and methods reflect public reporting and, in some cases, unverified claims made by the groups themselves; they may be incomplete or later revised. Recent Breaches and GalaxyWarden are independent and are not affiliated with, and do not endorse, any company or group named on this page. This information is aggregated from public sources for awareness only and is not legal, security, or investment advice.