On December 8, 2025, the online brokerage ThinkMarkets.com appeared on the leak site of the Chaos ransomware group, with internal files reportedly exfiltrated during a ransomware attack. The company, founded in 2010 and headquartered in London and Melbourne, serves customers across the Asia-Pacific, Middle East and North Africa, Europe, and South America. While the exact number of affected individuals remains unknown, anyone who has ever opened an account, shared identification documents, or provided banking details with ThinkMarkets may have personal information now in attackers’ hands.
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What Public Reporting Shows
Public reporting indicates that Chaos actors successfully exfiltrated internal files from ThinkMarkets’ systems before encrypting them. The data was published on the group’s leak site hosted on the dark web. No confirmed total of records or precise list of exposed file types has been released by the company, but ransomware incidents of this nature routinely include customer account records, identification scans, contact information, and financial details.
ThinkMarkets has not yet issued a public statement detailing the scope. Industry trackers monitoring the Chaos leak site list the brokerage as a confirmed victim with data already posted for download by other criminals.
Why This Matters for You and Your Family
If you or anyone in your household has traded, invested, or held an account at ThinkMarkets, your personal data could now circulate among cybercriminals. A single leaked brokerage record often contains your full name, address, date of birth, government identification numbers, email, phone number, and banking information. Once that data leaves the company’s control, it can be sold, combined with other leaks, and used to target you for identity theft, tax fraud, or unauthorized account access.