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Who is Alleged Medibank Hacker Aleksandr Ermakov?

ID: f7c418a7-ed95-56e3-ac60-ae73545948ea

STIX ID: report--f7c418a7-ed95-56e3-ac60-ae73545948ea

Feed Name: Krebs on Security

Threat Score
85/100

Date Published: 2024-01-26

Date Updated: 2026-04-19

Author: BrianKrebs

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Australian, UK and US authorities sanctioned Aleksandr Ermakov, accused of stealing and leaking 9.7 million Medibank health records in an incident tied to REvil-affiliated ransomware activity; the report details his alleged aliases and affiliations (GustaveDore, JimJones, Blade Runner), links to a Sugar ransomware affiliate program and Shtazi-related domains, and notes the publication of stolen data, subsequent doxing, and a reported arrest in Russia.

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