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HaciendaSec is a threat actor name associated with a claimed sale of allegedly stolen Spanish taxpayer data. Publicly available information in this context is limited to the actor’s claim of possessing and offering such data for sale. There is insufficient high-confidence evidence here to attribute the actor to a specific country, define a broader intrusion set, identify consistent tactics, techniques, and procedures, or assess whether the claim reflects a genuine compromise, data repackaging, or fraud. The available information supports only a tentative characterization as a financially motivated actor involved in data-sale activity.
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Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
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