About the group
Poseidon 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 Poseidon Group as a security firm.
Attack chain
Plausible scenario built from the group's real techniques, ordered by the phases of an attack. Each step shows how the group typically operates.
Illustrative chain derived from techniques documented in MITRE ATT&CK — it does not represent a specific past attack. Severity summarizes the known arsenal (kill-chain coverage, actively exploited CVEs, techniques).
Techniques (MITRE ATT&CK) 8
How the group operates, mapped to the MITRE ATT&CK matrix and organized by the phases of an attack.
Exploited vulnerabilities
No CVEs attributed to this group in public sources (MITRE ATT&CK). Absence of attribution does not mean absence of activity.
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