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Solonnik is a cybercriminal persona observed reposting and distributing allegedly stolen account-related data on BreachForums. The actor has been associated with publishing a large dataset purportedly tied to Instagram users and offering it for free on a criminal marketplace forum. Available reporting supports characterization of Solonnik as a data-leak and cybercrime actor involved in dissemination of compromised information rather than as a clearly attributed nation-state group. High-confidence information in the available record is limited to the actor’s use of a forum identity to publish exposed data; there is insufficient corroborated evidence to attribute broader tooling, intrusion tradecraft, organizational structure, or sub-groups. The activity is consistent with financially motivated cybercrime and supports capabilities related to exfiltration-linked data handling and post-exploitation distribution of stolen information.
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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.
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