Watchers Lab

U.S. government entity paid about $1 million to keep stolen files from being leaked. this comes from a new case study by Rakesh Krishnan for Ransom-ISAC, built on a leaked negotiation chat and the blockchain trail the payment left. The group that took the money calls itself Kairos, but it may not be a ransomware gang at all. Krishnan found no sign that it ever locked a single machine: no encryptor, no locker, no demand for a decryption key. The threat was simpler. Steal the files, then charge the victim not to publish them. The proof-of-theft files carry names like Union.xlsx, 1 union co psi template.doc, and a final archive called union.rar. The victim calls itself a small county with limited resources. The attacker leans on one folder in particular, marked "prosecutors office," warning that leaking it would help criminals dodge charges. The clues fit a real case. In May 2025, Union County, Ohio, said it detected ransomware on its network and later notified 45,487 residents and staff that their data had been taken, affecting most of the county of roughly 70,000. The stolen records ran from Social Security and financial details to fingerprints and passport numbers. It used the usual levers: a countdown timer, tight deadlines, and threats to dump the most sensitive folders first. The county paid on June 13, 2025, ten times its first offer.The payment was roughly 9.44 bitcoin, worth about $1 million at the time. Krishnan traced the money from there. Within hours, it was split in two and pushed through a chain of wallets toward deposit addresses tied to the crypto exchanges Bybit, OKX, and a Russian service called BELQI.