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Qilin Ransomware Group Linked to St. Petersburg Administrator

Qilin Ransomware Group Linked to St. Petersburg Administrator

First seen 12 Nov 2026, 01:43 UTC • •

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ThreatCluster AI
ThreatCluster •November 12, 2026 at 01:43 UTC
  • •Qilin ransomware group has targeted over 365 organizations in three months.
  • •The group's administrator is linked to a St. Petersburg man named Aleksey Mikhailovich Yakovtsev.
  • •Qilin utilizes a double extortion model, collaborating with English-speaking affiliates.

The Qilin ransomware group has been identified as the most active ransomware-as-a-service operation, targeting at least 365 organizations in the past three months. The group's administrator, a 36-year-old man from St. Petersburg, Russia, operates under the handle 'Haise' and has been linked to previous aliases, including 'Rjun' and 'Alexbigboss44'. Qilin employs a double extortion model, stealing sensitive data before encrypting systems. The investigation utilized data from cybercrime forums, leaked government data, and travel records to trace the administrator's identity to Aleksey Mikhailovich Yakovtsev. Despite the detailed profile, attempts to contact Yakovtsev were unsuccessful. This case illustrates how operational security lapses can lead to the de-anonymization of cybercriminals.

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Timeline

2022-09-01
Qilin ransomware group formed
Qilin began its operations in September 2022, quickly rising to prominence in the ransomware landscape.
Krebsonsecurity
2026-11-11
Research links administrator to Yakovtsev
Researchers identified the Qilin administrator as Aleksey Mikhailovich Yakovtsev through various digital traces.
Scworld

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Common questions

Who is the administrator of Qilin?
The administrator is identified as Aleksey Mikhailovich Yakovtsev, a 36-year-old from St. Petersburg.
What is the attack method used by Qilin?
Qilin employs a double extortion model, stealing sensitive data before encrypting systems.
How many organizations have been targeted?
Qilin has claimed at least 365 victim organizations in the past three months.