A US county government, reportedly Union County, Ohio, paid a $1 million Bitcoin ransom to the Kairos cyber extortion group following a May 2025 brute-force attack in which over 2 terabytes of data were stolen. Negotiations began at $100,000 and ended at $1 million after the attackers imposed a hard deadline, with the group originally demanding $3 million. The breach ultimately affected over 45,000 individuals whose sensitive personal, financial, and medical information was compromised, though no file-encrypting ransomware was involved and there is no independent verification that the stolen data was actually deleted.
