South Korea Tightens Crypto Trading Rules with New API Key Crackdown

Highlights:

• South Korea has introduced a new standard that allows exchanges to invalidate API keys.
• Crypto trading is facing tighter oversight as regulators target spoofing and coordinated trading schemes.
• Exchanges will implement IP whitelisting and stronger account access controls.

South Korea’s Digital Asset Exchange Alliance (DAXA) introduced a new compliance standard that targets improper API key sharing across local crypto exchanges. The alliance announced the measure after reports linked the use of shared API credentials on South Korean exchanges to suspected market manipulation and unfair trading practices.

According to Asia Business Daily, some users lent or shared API keys with third parties and external trading services. Regulators linked some of those credentials to suspicious trading activity.

South Korea’s DAXA Tightens Crypto Exchange API Controls

South Korea’s Digital Asset Exchange Alliance (DAXA) introduced a new compliance standard requiring member exchanges to invalidate API keys suspected of improper sharing. The FSS said automated trading accounts for around… pic.twitter.com/OPtnSEeqso

— Wu Blockchain (@WuBlockchain) May 29, 2026

The Financial Supervisory Service (FSS) increased scrutiny because automated trading now accounts for about 30% of domestic crypto trading volume. API keys allow automated software to connect directly to exchange accounts and execute trades without manual input. Those keys can access price data, account balances, trading orders, deposits, and withdrawals. Regulators warned that improperly shared API keys can allow unauthorized parties to trade through user accounts and influence market activity.

Under the new standard, exchanges can respond when they identify suspicious API-sharing activity. They can increase monitoring, issue warnings, require identity verification, and invalidate API keys. DAXA Executive Vice Chairman Kim Jae-jin said the alliance will respond swiftly to emerging threats linked to crypto trading and account security. He added that user protection remains the primary goal behind the new framework.

Crypto Trading Comes Under Scrutiny Over Market Abuse Risks

The Financial Supervisory Service cautioned that automated trading may affect the price of tokens and result in false signals on the market. Authorities said some traders place large buy orders and cancel them before execution to create false demand signals. Regulators feel those tactics can affect investor behavior and market sentiment.

The FSS also said coordinated crypto trading activity can make a token appear more active than actual market demand supports. Regulators warned that false trading signals can encourage investors to buy or sell assets based on artificial activity. The agency urged investors to avoid chasing sudden price spikes without clear reasons.

The regulator has not disclosed how many accounts remain under investigation. However, authorities continue to examine trading activity linked to spoofing, coordinated orders, and artificial volume generation. The new DAXA framework gives exchanges more tools to respond when suspicious activity appears.

DAXA has not disclosed the exact methods exchanges will use to detect violations. However, the alliance said exchanges can issue warnings, require re-authentication, and invalidate suspicious API keys more quickly under the new standard.

Exchanges Add New Access Controls Across Korea’s Digital Asset Market

DAXA said IP whitelisting allows exchanges to identify login attempts from unapproved locations and unauthorized crypto trading systems. The restriction prevents API keys from operating through devices and networks that users have not approved.

The issue gained wider attention after the 3Commas incident exposed about 100,000 API keys linked to Binance and KuCoin accounts. Security researchers later warned that many crypto firms classify API credential theft as general hacking incidents instead of separate security breaches. Former Binance CEO Changpeng Zhao also warned users about the risks associated with compromised API credentials.

If you have API keys in your code, even private repos, now is the time to double check and change them… https://t.co/DhzATRTyNQ

— CZ 🔶 BNB (@cz_binance) May 20, 2026

The latest framework forms part of South Korea’s broader effort to strengthen oversight of crypto exchanges. Regulators previously required exchanges to introduce five-minute balance checks, automatic trading halts, and monthly audits after a major Bithumb error.