Crypto Grey Zone Explodes: Why Vietnam’s ONUS Bust Is A Warning To Retail Traders

bitcoinistPublished on 2026-03-27Last updated on 2026-03-27

Abstract

Vietnam's police dismantled a massive multi-billion dollar crypto scam centered on the investment platform ONUS, arresting seven individuals including its founder. The scheme involved creating and selling fake digital currencies while manipulating their prices to lure investors, leaving millions of users affected. This case highlights Vietnam's status as a hotspot for crypto fraud, exacerbated by regulatory grey zones that scammers exploit. The incident serves as a critical warning to retail traders about the high jurisdictional and counterparty risks in emerging markets, where enforcement can shift abruptly and liquidity vanish quickly.

Vietnam’s police has dismantled an “exceptionally large” multi-billion dollar crypto scam centered on selling fake digital currencies.

Inside The Multi-Billion Dollar Crypto Scam

The Vietnam’s Ministry of Public Security (national police) announced on Thursday the arrest of at least seven people in relation with ONUS, a Vietnamese-based crypto investment app and exchange that was used by millions of Vietnamese investors, AFP reports through Nampa.

140 people were summoned for questioning before the arrest of fintech and blockchain entrepreneur Vuong Le Vinh Nhan (aka Eric Vuong) and six accomplices, on charges of property appropriation and money laundering. The platform suddenly became inaccessible around March 20, leaving retail users locked out and scrambling for answers.

The police claims Vuong’s group has been operating since 2018, allegedly creating fake coins, issuing and selling them through ONUS, while manipulating supply, demand, and prices to manufacture paper gains and lure in more victims. The scam leaves millions of users affected, and at least one investor saying they were “devastated” after losing over $15,000.

A Country Of Booming Crypto Scams

Vietnam has become one of the world’s hottest retail‐crypto markets, with around 17 million digital asset holders. Hanoi bans crypto as a means of payment but allows speculation in a legal grey zone, which scammers exploit: this is not Vietnam’s first case of high-profile crypto fraud.

The country has already seen multiple digital assets frauds and Ponzi‐style schemes. Back in 2018, around 32,000 people may fell victim to a $658 million Initial Coin Offering (ICO) scam for two different cryptocurrencies, both of which were launched by Ho Chi Minh City-based company Modern Tech JSC. In 2024, Vietnamese authorities dismantled another large-scale cryptocurrency scam orchestrated by a company called ‘Million Smiles,’ protecting nearly 300 potential victims from financial exploitation, after it had already swindled around $1.17 million.

Takeaways For Traders

Emerging‐market retail booms combined with regulatory grey areas are turning Southeast Asia into a hotspot for “short‐cycle” high‐yield scams, even as regulators worldwide step up enforcement. It would not come as a surprise if we see Vietnam’s policy change its trajectory into an strategy of more pressure for clear rules on token issuance, exchanges, and marketing, and less tolerance for “experimental” platforms operating at scale.

For traders, the ONUS saga is a reminder that jurisdictional risk matters just as much as chart patterns. Enforcement in regulatory grey zones can flip from hands‐off to aggressive overnight, and when that happens, liquidity on localized platforms tends to disappear far faster than most risk models assume. “Too‐good‐to‐be‐regulated” is no longer a clever marketing line; it is a working definition of counterparty risk.

BTC’s price crashed under $68k. Source: BTCUSDT on Tradingview

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Related Questions

QWhat was the main operation of the ONUS crypto scam in Vietnam?

AThe ONUS crypto scam involved creating fake digital coins, issuing and selling them through the ONUS app, while manipulating supply, demand, and prices to manufacture paper gains and lure in more victims.

QHow many people were arrested in connection with the ONUS crypto scam?

AAt least seven people were arrested, including fintech and blockchain entrepreneur Vuong Le Vinh Nhan (Eric Vuong) and six accomplices.

QWhy is Vietnam considered a hotspot for crypto scams according to the article?

AVietnam is considered a hotspot for crypto scams due to its booming retail-crypto market with around 17 million digital asset holders, combined with a regulatory grey zone that allows speculation but bans crypto as a means of payment, which scammers exploit.

QWhat was the financial impact on at least one investor mentioned in the ONUS scam?

AAt least one investor reported being 'devastated' after losing over $15,000 in the ONUS scam.

QWhat lesson should traders learn from the ONUS saga regarding regulatory environments?

ATraders should learn that jurisdictional risk matters as much as chart patterns; enforcement in regulatory grey zones can become aggressive overnight, and liquidity on localized platforms can disappear faster than most risk models assume, making 'too-good-to-be-regulated' a definition of counterparty risk.

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