Cayman National Bank

Cayman National Bank was compromised in a ransomware attack attributed to killsec3 in October 2025. The organization, operating in an undisclosed sector in Unknown, was added to the group's data leak site as part of an extortion campaign.

killsec3 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.

We have compromised Cayman National Bank’s infrastructure, securing comprehensive data from the Exchange server, including email archives, confidential customer records, and proprietary insider information. This material is now under our control. Should Cayman National Bank fail to engage in good-faith negotiations and meet our terms, we will proceed with full public disclosure of the acquired assets. We advise prompt cooperation to mitigate this outcome.