MultistateTax Inc

MultistateTax Inc was compromised in a ransomware attack attributed to blackshrantac in November 2025. The organization, operating in the Financial Services sector in United States, was added to the group's data leak site as part of an extortion campaign.

blackshrantac 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.