Crypto Scam Shock in Vietnam: 7 Arrested in Massive Fraud Case

Key Insights:

• Seven individuals were arrested in Vietnam for the ONUS-linked crypto scam.
• Investigators say tokens VNDC, ONUS, and HNG were manipulated to mislead investors.
• The case highlights growing crypto scrutiny in Vietnam and across the region.

Vietnam’s crypto market is under scrutiny as authorities arrested seven individuals in connection with a massive fraud scheme. Investigators say the group used popular token promotions and controlled trading tactics to mislead investors into a crypto scam.

The case, tied to the ONUS ecosystem, is now drawing national attention as one of the country’s biggest crypto-related crackdowns in recent years.

Vietnam Launches Probe Into ONUS-Linked Crypto Scam

In the latest crypto crackdown, Vietnamese authorities have launched a major fraud investigation linked to the ONUS crypto ecosystem. As part of the investigation, the team arrested seven major suspects. According to the officials, the suspects used aggressive token promotion to amass funds.

The Ministry of Public Security started its investigation work on March 23, 2026. The investigation spanned multiple territories in response to claims of crypto scams and other fraudulent activities in Hanoi and other areas.

Vietnam Crypto Scam News | Source: Ministry of Public Security

The main suspects in the case are Vuong Le Vinh Nhan, Tran Quang Chien, and Ngo Thi Thao. The investigators proved that the group operated the ONUS platform through their hidden control over the token supply, enabling them to manipulate market conditions and trick investors.

Vietnamese media outlets have described the case as one of the country’s largest crypto-related cybercrime investigations. The authorities have not released their official estimate of total losses yet, but initial reports indicate the scheme likely involved billions of dollars.

How the Scammers Misled Investors?

The scammers showed their fraudulent activities through their organized marketing efforts and trading methods, according to the authority. They used these tactics to present specific tokens as viable investment options. The defendants allegedly manipulated token market prices through their trading activities to generate false market demand and evidence of growth.

The tokens such as VNDC, ONUS, and HNG were central to the scheme. The group leveraged its ability to handle system-based assets, enabling it to gain additional users and financial resources while keeping its operational power concealed.

Broadening Crypto Enforcement

The current case exists during a period when Vietnam has emerged as one of the world’s most dynamic cryptocurrency markets. The 2025 Global Crypto Adoption Index from Chainalysis ranked Vietnam fourth, driven by its citizens’ frequent use of cryptocurrency.

The country experiences an increase in crypto scams during its period of expansion. The experts claim that unregulated crypto platforms present dangers, which these cases demonstrate. The authorities focus on protecting investors and ensuring transparent operations because they handle billions in funds. They announced that crypto-related offenses will face severe penalties across the region.

Vietnam allows blockchain and crypto operations to operate within an undefined legal space, in contrast to China, which bans all digital currencies.

Authorities have been investigating the ONUS platform for months, summoning more than 140 people for questioning. Eventually, they arrested Vuong Le Vinh Nhan, a fintech and blockchain entrepreneur, along with six others. They face charges of property appropriation and money laundering.

Police allege that since 2018, Vuong and his group have created fake cryptocurrencies and sold them to investors through the ONUS platform, misleading users and profiting from the scheme.

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