Agencia Tributaria

Agencia Tributaria was compromised in a ransomware attack attributed to qilin in October 2025. The organization, operating in the Government sector in Spain, was added to the group's data leak site as part of an extortion campaign.

qilin 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.

The Spanish Tax Administration Agency (Agencia Tributaria) - is the revenue service of the Kingdom of Spain. The agency is responsible for the effective application of the national tax and customs systems and for those resources of other Publ ...

Intelligence correlations link this incident to 1 vulnerability(ies) including CVE-2026-0257, which may have been leveraged as initial access vectors or for lateral movement.