The Office of Foreign Assets Control (OFAC) under the US Treasury Department has added Uzbek citizen Mamashoyev Azizjon Mahmudovich to its sanctions list. The American side claims that he was in close contact with a group of Russian hackers and participated in actions that threaten global cybersecurity.
"SDN" blacklist and frozen assets
Mamashaev and his company Advance Security Solutions were included in the USA's strictest "blacklist" (SDN). All assets of individuals included in this list in America will be frozen, and US companies and citizens will be strictly prohibited from any economic cooperation with them.
Tracks in Dubai and Tashkent
According to the investigation, the company associated with Azizjon Mamashoyev was registered in Dubai in 2025, but Tashkent is also listed among its legal addresses. The company operated in the area of "attacking cybersecurity." In particular, he worked as a "exploit" broker designed to hack systems - that is, engaged in the sale and rewards of information about vulnerabilities in computer systems.
Alliance with Russian hackers
Along with Mamashaev, several Russians are also on the sanctions list. Among them, Sergey Zelenyuk stands out. Zelenyuk is suspected of organizing attacks on US government agencies and medical institutions through malicious programs. It is said that Mamashoyev from Uzbekistan provided technical and material assistance to this criminal group.
Uzbek companies are under control
This is not the first case of enterprises related to Uzbekistan facing US sanctions. In November 2025, Datavice was also under restrictions for supporting Russian military-technical infrastructure. Such cases testify to the increased attention of international financial organizations and government agencies to cyber activity in the region.
In your opinion, how effective are international sanctions in the fight against cybercrime?
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