Home / Threat actors / Poseidon Group
Poseidon Group G0033
Updated at source on Jul 31, 2026 · View on MITRE ATT&CK
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associated CVEs
8
Techniques
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Malware and tools
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.
Exploited vulnerabilities
CVEs cited by MITRE ATT&CK for this group, with the source excerpt. Records not yet published here appear without a link.
ATT&CK does not cite CVEs for this group.
Techniques by tactic
Execution
T1059.001 PowerShell Stealth
T1036.005 Match Legitimate Resource Name or Location Credential Access
T1003 OS Credential Dumping Discovery
T1007 System Service DiscoveryT1049 System Network Connections DiscoveryT1057 Process DiscoveryT1087.001 Local AccountT1087.002 Domain Account © The MITRE Corporation. ATT&CK® content reproduced and distributed with the permission of The MITRE Corporation.