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Russian Hacker Denis Obrezko Arrested in Thailand

First seen 16 Nov 2025, 10:59 UTC • Tribuneindia

+11 •18.3

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Denis Obrezko, a 35-year-old Russian man, was arrested on November 6, 2025, in Phuket, Thailand, for alleged cybercrimes linked to the Kremlin. He is reportedly associated with the Void Blizzard group, known for cyber espionage activities recognized by Microsoft. The arrest was part of a joint operation involving the FBI and Thai authorities.

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Attack Flow

11 entities, 17 inferred relationships (STIX 2.1).

Threat Actor (2)

Fancy Bear
Void Blizzard

Technique (7)

Data Breach
Malware
Phishing
Ransomware
Password Spraying
T1110.001 - Password Spraying
T1566 - Phishing

Organization (1)

Education

Malware (1)

X-Agent

Relationships

Fancy Bear uses X-Agent
Void Blizzard uses X-Agent
Fancy Bear uses Data Breach
Fancy Bear uses Malware
Fancy Bear uses Phishing
Fancy Bear uses Ransomware
Fancy Bear uses Password Spraying
Void Blizzard uses Data Breach
Void Blizzard uses Malware
Void Blizzard uses Phishing
Void Blizzard uses Ransomware
Void Blizzard uses Password Spraying
Fancy Bear targets Education
Void Blizzard targets Education
X-Agent targets Education
Fancy Bear related to T1110.001 - Password Spraying
Fancy Bear related to T1566 - Phishing

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Russian Hacker Denis Obrezko Arrested in Thailand

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