Winona County
Attack Intelligence
Winona County was compromised in a ransomware attack attributed to interlock in April 2026. The organization, operating in an undisclosed sector in Unknown, was added to the group's data leak site as part of an extortion campaign.
interlock operates as a financially motivated ransomware-as-a-service (RaaS) operation, exfiltrating sensitive data and threatening public disclosure to pressure victims into paying ransom demands.
https://www.winonacounty.gov/ Winona County is located in the Mississippi River blufflands of southeastern Minnesota. They have been negligent regarding security and the data they store, which has resulted in a breach and the public disclosure of all the confidential data they held. As a result, we are now able to offer you a large database containing resident records, tax and budget documents, police records, and data from other institutions.
Intelligence correlations link this incident to 1 vulnerability(ies) including CVE-2026-20131, which may have been leveraged as initial access vectors or for lateral movement.