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Co cybersecurity incidents and threat signals
co.union.oh.us
This company page brings together public reporting currently associated with Co. It reflects signals published by Shadow Tier and should not be read as a complete incident history.
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June 26, 2026
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Based on all published signals currently linked to Co. Affected countries come from victim data; the company country above remains a separate profile fact. Counts describe this reporting set, not overall incident prevalence.
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Union County, Ohio, alerts residents of cyber incident and data theft impacting 45,487 people
Union County, Ohio, detected ransomware on May 18, 2025. An investigation revealed cybercriminals accessed the network from May 6, 2025, through May 18, 2025, stealing data from 45,487 individuals. Compromised data included names, SSNs, driver's license/state ID numbers, financial account information, dates of birth, fingerprint information, medical information, payment card information, and passport numbers.
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What does the Co page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Co.
Does every mention of Co appear here?
No. A signal must contain a reliable company connection and meet the publication criteria; incidental or ambiguous mentions are excluded.
Why can the incident count change?
The page follows current published reporting. Counts change as new evidence is added, classifications are reviewed, or older signals leave the reporting window.