Listed by Anubis on
Compiled from this incident record and the threat intelligence profile for Anubis. Figures and technique mappings are quoted from the source data, not inferred.
Ransomware group Anubis added victim Fisher59 to its dark web leak site on 20 October 2026 listing 113 victims thus far.
Anubis is a ransomware-as-a-service group active since December 2024 that targets healthcare, engineering, construction, and professional services sectors, offering affiliates a flexible revenue split model and an optional destructive "wipe mode" alongside standard encryption. Anubis has listed 113 victims since February 2025.
Fisher59 was listed by Anubis ransomware, a group with 122 victims recorded in this database. The listing appeared on the group's leak site on October 20, 2026.
Anubis typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.
Yes. Fisher59 was listed as a victim of the Anubis ransomware group on October 20, 2026. The disclosure appeared on the group's dark web leak site.
Fisher59 was attacked by Anubis ransomware. Anubis is one of the most active ransomware groups, having claimed 122 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.
The ransomware attack on Fisher59 was disclosed on October 20, 2026. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.
The specific data stolen from Fisher59 has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. Sensitive business data was likely targeted.
To defend against Anubis and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.
