Upbit Hack: 5.9B Won Loss, User Reimbursement

Key Points:
  • Main event: Upbit hack leads to corporate loss and user reimbursement.
  • CEO Oh Kyung-seok confirms user compensation.
  • Hack involves Solana  SOL -0.02% -based wallets, prompts security overhaul.

Upbit, a leading South Korean cryptocurrency exchange, reported a 44.5 billion KRW hack on November 27, 2025, resulting in significant user asset reimbursement by company reserves.

The incident highlights persistent security vulnerabilities affecting Layer 1 tokens, amplified by historical precedents and continued scrutiny from regulatory bodies and the crypto community.

Corporate Responsibility and User Safety

A recent hack on Upbit resulted in a 5.9 billion won corporate loss. User assets totaling 38.6 billion won were successfully reimbursed by Upbit using company funds, demonstrating a strong corporate responsibility commitment.

Oh Kyung-seok, CEO of Upbit’s parent company Dunamu, expressed deep regret and assured full reimbursement of losses. This swift action reflects Dunamu’s dedication to user asset protection, despite past security breaches similar to this hack. As Kyung-seok stated, “We will cover all losses with Upbit’s own assets to ensure that no damage occurs to our members’ funds.”

Impact on Solana-Based Wallets

The hack has impacted Solana-based wallets, affecting 24 digital currencies. Upbit took immediate measures to halt deposits and withdrawals, attempting to prevent further losses and address the security vulnerabilities involved. In the aftermath, regulatory bodies and authorities were swiftly informed and involved. The Korea Internet and Security Agency is actively investigating to determine hacker origins, with early suspicions pointing towards North Korean groups.

Market Reactions and Future Measures

The financial sector is witnessing collateral security concerns post-hack. Markets reacted cautiously, reflecting on Upbit’s rapid recovery steps. Technological upgrades are anticipated, reflecting on heightened security protocols to forestall future breaches. Historical trends indicate that recurring attacks on major exchanges like Upbit lead to enhanced cybersecurity measures. The CEO’s statement underscores a proactive stance, foretelling potential regulatory and technological improvements in market security protocols.

Otto Bergmanr

Otte Bergmar is a crypto journalist covering Scandinavian and European blockchain markets, with a focus on decentralisation, privacy, and the AI–crypto interface. He reports on Web3 startups, market structure, and EU policy; from licensing regimes to consumer protection and cross-border compliance. At TokenTopNews, Otte transforms policy drafts, regulatory disclosures, and on-chain data into actionable, decision-ready insights, helping readers understand how regulation influences blockchain adoption across Europe.