Sui in Scope of Seoul Prosecutor's Proposed 6-Month Exchange Freeze

Prosecutor Proposes FIU-Led Freeze

A prosecutor at the Seoul Central District Prosecutors' Office has proposed giving South Korea's financial intelligence unit the power to freeze digital assets held on domestic exchanges for up to six months, a mechanism that would reach tokens such as Sui whenever they sit in the custody of a Korean-registered operator. Kim Byeongjin set out the plan in a paper published in September in the Supreme Prosecutors' Office academic journal, arguing that the Act on Reporting and Using Specified Financial Information, the country's anti-money-laundering statute, needs a new FIU-led early freeze system for crime proceeds that have been converted into digital form. The FIU, which operates under the Financial Services Commission, currently has no standalone authority to order such a freeze once proceeds have changed into tokens.

The proposed workflow runs in three steps. An investigative agency files a freeze request backed by case files and evidence. The FIU then reviews two questions separately: whether there is substantial reason to believe the assets are connected to crime proceeds or other illegal property, and whether a freeze is needed to prevent their transfer or concealment. If both conditions are met, the FIU directs domestic virtual asset service providers to restrict withdrawal, transfer and disposal of the named holdings.

The text names no token and no market, and the Sui price appears nowhere in the proposal; the perimeter is drawn by custody, not by asset. Any digital asset a Korean-registered operator holds for a user, SUI included, would fall inside the freeze regime the paper sketches for the Sui ecosystem and every other network those operators serve. The freeze is partial by design: it applies to assets an operator custodies for users, and where legitimate funds and crime proceeds sit in the same account, the FIU must specify the quantity or value to be tied up rather than blocking the account as a whole.

The author's core argument is that tracing is not recovery. On-chain records can follow movement across a crypto wallet address from the moment proceeds are converted, but getting the funds back is a separate problem. While an operator's account still holds them, transfer can be stopped; once they move to an external crypto wallet or an overseas operator, Korean agencies can no longer freeze them directly. A transfer to self-custody takes the assets out of any domestic order's reach entirely. International cooperation or an offshore operator's help may be sought, but during that window the assets can hop to fresh addresses, according to DigitalAsset's summary of the paper.

Current law covers only part of the gap. An amended telecom fraud victim refund law that took effect on Oct 1, 2026 extends payment suspensions to digital asset accounts, but its purpose is refunding voice-phishing victims, not general asset preservation. The user protection act lets operators, which run KYC checks on customers, block deposits and withdrawals on reasonable suspicion of illegal funds or laundering, yet it provides no structure in which a separate agency reviews an investigator's request and issues a freeze order.

The design details matter for holders. The initial freeze would run two months, extendable twice in two-month increments after renewed justification, for a six-month maximum. Users would be told of a freeze and its grounds as a principle, with notification deferred only where transfer risk or investigative needs justify the delay, and they could apply for release or a narrower scope at any time. The author also rejects limiting the freeze to specific predicate crime types, arguing that the transfer risk of converted proceeds is not confined to particular offenses and that limits would create gaps.

Proposal, Not Yet Law

The paper is a policy proposal, not a rule: it appeared in a prosecutors' journal, and it binds no exchange and no holder until the National Assembly amends the anti-money-laundering statute. As of Thursday, 2026-10-01, no such amendment has been tabled. For SUI the near-term exposure is custodial rather than market-facing: balances on Korean-registered operators are what a freeze order could name, while assets in a cold wallet sit outside its reach, and our complete 2026 beginner guide to using Sui walks through the custody options. The proposal also lands inside a broader regulatory arc we have tracked around this network, from the fight over stablecoin yields to Sui topping 6 billion transaction blocks.