Colorado Health Network Notifies Patients of Last Year’s Breach—But Key Details Remain Undisclosed

In August 2025, DataBreaches added the Colorado Health Network (CHN) to our non-public worksheets after threat actors called Cephalus added the provider to its’ dark web leak site with a claim that they had acquired 900 GB of data. Cephalus disappeared from public view days later, and never leaked the data on any server that... Source

Who should care: Cybersecurity · Privacy officers · Administrators

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