South Korea Enhances Crypto Exchange Accountability After Upbit Hack

TLDR

• Upbit hack resulted in KRW 44.5 billion stolen.
• New legislation proposes fines up to 3% of revenue.
• Mandatory security audits and real-time monitoring are recommended.

South Korea’s government is seeking to enhance the accountability of cryptocurrency exchanges in light of the recent Upbit hack. This move is led by various financial authorities, including the Financial Services Commission (FSC) and the Financial Supervisory Service (FSS), alongside lawmakers. The hack has spurred the advancement of “Phase 2” virtual-asset legislation, which aims to impose stricter liabilities and penalties on these exchanges.

Upbit, South Korea’s largest crypto exchange operated by Dunamu Inc., experienced a significant breach in November 2025. The incident primarily involved Solana ecosystem assets, with approximately KRW 44.5 billion stolen. The event has prompted a series of regulatory responses aimed at fortifying the security and reliability of cryptocurrency exchanges in the country.

Amending Crypto Exchange Obligations and Penalties

The proposed amendments to the legislation seek to align the obligations and penalties for crypto exchanges with those of traditional financial institutions. This includes implementing a “no-fault compensation” regime, holding exchanges accountable for cyberattacks and system failures regardless of negligence. Lawmakers are pushing to embed these requirements into the Electronic Financial Transactions Act (EFTA).

An FSC official stated, “If the EFTA amendment raises penalty ceilings, virtual-asset businesses will be aligned to that standard.” The legislation contemplates fines of up to 3% of annual revenue for major hacks or system failures. Additionally, exchanges would be required to submit annual IT-risk management plans to the FSC to ensure compliance.

Broader Regulatory and Security Measures

The FSS is advocating for mandatory security audits, enhanced cold storage, and real-time transaction monitoring for exchanges. These measures are intended to address the vulnerabilities exposed by the recent hack and to bolster overall system security.

Governor Lee Chan-jin of the FSS emphasized the need for stronger penalties, stating, “This is not something we can overlook, but current law restricts our ability to enforce penalties.” The FSS is conducting on-site inspections at Upbit and coordinating with other agencies to investigate the security breach further.

Implications for the Solana Ecosystem and Korean Crypto Markets

The Upbit hack primarily affected Solana (SOL) ecosystem assets. The stolen assets were converted into Ethereum and other cryptocurrencies, utilizing cross-chain bridges and mixers to obfuscate their origins. Notably, there are patterns suggesting the involvement of the North Korean Lazarus Group in the breach.

Upbit responded by freezing approximately $8.18 million linked to the theft and tightening its withdrawal protocols. However, this incident has raised concerns over the security of centralized hot wallets, which have repeatedly been targeted by hackers.

Systemic and Market Effects of Enhanced Liability

The proposed regulatory changes are expected to impact liquidity provisioning and risk appetite across Korean exchanges. The increased regulatory and operational costs, driven by the anticipated 3% revenue fines and “no-fault” liability, could lead to significant shifts in the trading environment.

Several structural impacts are anticipated, including enhancements to exchange infrastructure and custody arrangements. The industry is expected to see a stronger focus on multi-signature wallets, AI-driven threat detection, and bank-grade custodians to manage security risks.

Future Directions for Crypto Regulation in South Korea

The focus of Korean authorities remains on strengthening the security framework governing cryptocurrency exchanges. The Upbit incident serves as a catalyst for regulatory evolution, pushing the industry towards bank-level security obligations and consumer protection standards.

Lawmakers, led by Representative Kang Min-guk, have highlighted the need for transparency and accountability in exchange operations. The debate surrounding the “Phase 2” virtual asset law underscores the growing public scrutiny over the balance of losses between firms and users.