Seoul court voids FIU’s three-month Upbit restriction on

The Seoul Administrative Court canceled South Korea’s FIU sanction that would have blocked new Upbit users from transferring digital assets for three months. The decision turns on a narrow but trader-relevant point: unclear AML expectations for sub-1 million won transfers weakened the regulator’s enforcement basis in this case.

Key Takeaways

A Seoul court overturned the FIU’s three-month partial business suspension of Dunamu, the operator of Upbit.
The February 2025 penalty would have barred new Upbit users from transferring digital assets for three months.
Judges found AML rules were explicit for transactions above 1 million won (~$675), but not specific enough for smaller transfers.
The FIU has pointed to unregistered overseas VASP exposure, customer due diligence failures, and “over 600,000 suspected Know Your Customer violations” during a license review.

Seoul Court Cancels FIU’s Upbit Suspension and New-User Transfer Ban

The Seoul Administrative Court canceled the Financial Intelligence Unit’s (FIU) three-month partial business suspension of Dunamu, the company behind South Korean exchange Upbit. The sanction, imposed Feb. 25, 2025, would have restricted new Upbit users from transferring digital assets for three months.

For market participants, the immediate mechanical impact is straightforward. The ruling removes a near-term operational constraint on Upbit’s onboarding flow that could have slowed new-user activation and, at the margin, reduced fresh KRW venue liquidity during the suspension window.

The dispute has been live since early 2025. After the FIU announced the penalty, Dunamu moved to overturn it and sought an injunction. The court granted that injunction on March 27, 2025, allowing Upbit to continue onboarding new users while the challenge was under review. The latest decision goes further by canceling the suspension outright.

The Legal Reasoning: Clear Above 1M Won, Vague Below

The court’s reasoning centered on specificity. Judges said compliance rules were clear for transactions above 1 million won (about $675), but standards for smaller transfers were not specific enough, which weakened the FIU’s enforcement basis in this case.

In the court’s framing, the regulator “had not provided specific guidance on what actions were required.” Against that backdrop, the court found Dunamu “had taken its own measures,” and said it was “difficult to conclude that Dunamu failed to fulfill its obligations due to intent or gross negligence.”

That matters beyond this single restriction. The decision signals a vulnerability for enforcement when AML expectations are not spelled out tightly enough at the operational level, even when a regulator argues broader compliance failures. For exchanges, it raises the value of documented internal controls when external standards are ambiguous. For traders, it reduces one category of sudden venue disruption risk, but it does not erase the compliance overhang.

What the FIU Alleged: Overseas VASPs, Due Diligence Gaps, and 600,000+ Suspected KYC Issues

The FIU said the sanction followed an on-site inspection that found Dunamu facilitated transactions with unregistered overseas virtual service providers (VASPs) and failed to meet customer due diligence requirements.

Separately, the FIU previously said it identified “over 600,000 suspected Know Your Customer violations” during a review of Upbit’s exchange business license.

Those allegations keep headline and compliance risk in play for KRW market participants. Even with the suspension canceled, the underlying claims point to the kind of supervisory pressure that can reprice venue risk quickly through restrictions, enhanced monitoring, or follow-on inspections.

Next Signals for Korea Exchange Risk: Appeals, Rule Clarifications, and Enforcement Playbook

The next procedural step that matters is whether the FIU appeals the Seoul Administrative Court decision. No appeal status or timeline was provided.

Traders should also watch for FIU or legislative updates that clarify AML and KYC requirements for transfers below 1 million won. The court’s emphasis on vagueness suggests that tighter written standards could restore enforcement leverage in future cases.

On the supervisory side, follow-on inspections or enforcement actions around overseas VASP exposure and customer due diligence are the most direct read-through, given the FIU’s stated findings here. Finally, any changes to Upbit’s onboarding or new-user transfer policies after the cancellation will show whether Dunamu treats the ruling as a green light to normalize flows or as a prompt to harden controls preemptively.

Why This Ruling Matters for Venue Risk in KRW Markets

I treat this as a reduction in immediate operational risk, not a clean bill of health. The specific constraint that mattered to flow, a three-month ban on new-user digital-asset transfers, is now neutralized after first being paused by injunction and then canceled.

The threshold that matters is the regulator’s ability to write enforceable standards for sub-1M won transfers. If that gap gets closed through clarified guidance or rulemaking, the setup starts to look structural rather than narrative-driven, and venue risk in KRW markets shifts back toward sudden, enforceable restrictions instead of litigated uncertainty.

Sources

Cointelegraph