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Executive facts
Actor
Cicada3301
Kind
ransomware
Latest observed
2025-09-04
Leak-site claims
78
Catalogued techniques
0
Scope
Tracked sectors
Manufacturing, Business & Professional Services, Construction & Engineering, Hospitality, Technology
Claim records
2024-06-19 to 2025-09-04
Vulnerability events linked to this group
No dated vulnerability events are attached to this group's linked vulnerabilities.
Verified techniques
No verified ATT&CK mapping for this group.
Defensive actions
No defensive actions are attached to this profile.
Most-claimed sectorsManufacturingBusiness & Professional ServicesConstruction & EngineeringHospitalityTechnology
Activity window in this site's data
This is only the dates observed by this site. It is not this actor's lifetime or evidence of dormancy outside these dates.
Claim records
First observed Latest observed
Verified ATT&CK phases represented
No verified ATT&CK mapping for this group
Origin and motivation
Origin and motivation not attributed.
No MITRE ATT&CK group mapping exists for this actor yet. Mappings here are strict: an actor links to a MITRE group only when the group's own name, aliases, or MITRE-published description match, and MITRE has not catalogued this group. Technique and defensive action data will appear automatically if a verified mapping lands.
Claims posted under this group's name or leak-site brand