Threat actors
Every actor CyberSIXT, MITRE ATT&CK and the MISP Galaxy know, reconciled. A row opens the actor's page when CyberSIXT covers it, its Atlas view otherwise.
| Actor | Origin | Motivation | CVEs | In KEV | Techniques | Software | Sources |
|---|---|---|---|---|---|---|---|
| Poseidon GroupPoseidon Group is a Portuguese-speaking threat group that has been active since at least 2005. The group has a history of using information exfiltrated from victims to blackmail victim companies into contracting the Pose | Brazil | – | – | – | 8 | – | ATT&CK G0033 · MISP Galaxy |
ATT&CK © 2026 The MITRE Corporation, reproduced with its permission. MISP Galaxy under CC0. Every link between an actor and a CVE is a stored, sourced link. Data as of 2026-11-14.