Bithumb

Bithumb operates as a cryptocurrency exchange that enables users to buy, sell, and trade a variety of digital assets. The platform provides spot trading services for major coins such as Bitcoin, Ethereum, EOS, and XRP, among others. It serves a user base that includes both retail investors in South Korea and international traders accessing the service online. Bithumb maintains both hot wallets for active trading and cold wallets for the majority of client assets, as noted in its security disclosures. The exchange describes itself as one of the largest trading venues by volume in the South Korean cryptocurrency market. Its core business revolves around facilitating liquidity and price discovery for digital currencies.

Bithumb has experienced several high‑profile security incidents that have shaped its operational profile. In June 2018 a hot‑wallet breach resulted in the loss of approximately $31.5 million worth of virtual coins, leading to a full trading suspension and a pledge to compensate affected users. A March 2019 incident saw roughly $21 million in EOS and XRP stolen from a hot wallet, which the exchange attributed to insider involvement and subsequently addressed with enhanced internal security controls. Earlier breaches in 2017 exposed personal data of tens of thousands of users through compromised employee credentials and voice‑phishing schemes, though no funds were taken in those events. Despite these setbacks, Bithumb has continued to operate and has emphasized improvements such as stronger wallet segregation and stricter employee access policies. The exchange’s repeated targeting has highlighted both the vulnerabilities inherent in hot‑wallet storage and the challenges of securing large‑scale cryptocurrency platforms.