On February 09, 2024, Connecticut-based CTSI was listed on the leak site operated by the bianlian Ransomware Group. The company, which provides environmental, health and safety consulting, industrial hygiene, technical services, and emergency response support, is claimed to have had internal files exfiltrated during a ransomware attack. The disclosure does not specify how many individuals or records are affected, nor does it detail the exact contents of the stolen data.
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Primary Disclosure Details
The bianlian leak site listing states that CTSI suffered a ransomware incident in which attackers successfully exfiltrated internal files. No victim count, ransom amount, or specific data categories such as names, Social Security numbers, or client records are provided in the posting. The notification simply confirms that data was taken and threatens publication if demands are not met. Public reporting on similar bianlian listings indicates that once a company appears on the site, samples or full archives are often released in stages to increase pressure.
February 09, 2024 marks the first public confirmation of the compromise through the group’s official leak portal, accessible via the onion address hosted on the ransomware.live mirror.
Why This Matters for You and Your Family
If you or anyone in your household has worked with CTSI, received environmental testing services, participated in industrial hygiene programs, or been involved in one of their emergency response contracts, your personal information may now sit in an attacker-controlled archive. Even when exact record counts remain unknown, ransomware groups routinely harvest employee records, vendor contracts, client contact lists, and billing information. Any of these can be combined with data from previous breaches to build a detailed profile of you and your family.