Bithumb Investigates Cyber Breach of Internal System Amid Rising Financial Sector Attacks

Data Breach at Bithumb

In a notable security incident, South Korea's cryptocurrency exchange Bithumb is currently probing a recently identified data breach affecting its internal mobile communication system. The hack was reported earlier this week, prompting the exchange to alert both the Korea Internet & Security Agency and the Personal Information Protection Commission on the same day the breach was discovered.

Details of the Breach

Bithumb indicated that the compromised system is employed by employees for workflow and information sharing, raising concerns about the potential leak of sensitive member data.

The company reassured users, stating,

“We are analyzing the exact scope, including the possibility of member information being involved,”

while emphasizing that the compromised internal system is distinct from their virtual asset trading platform, separating customer digital assets from the breach’s impact. An official announcement was anticipated to be made shortly after the discovery.

Context of Cyber Threats in South Korea

This incident comes on the heels of multiple cyber threats targeting South Korea’s financial sector, which has seen at least 16 firms fall victim to attacks by mid-October. Notably, asset management giant Mirae Asset Global Investments and Daishin Securities also reported recent breaches. Daishin Securities confirmed a leak of personal and credit information affecting approximately 38,490 customers, while Mirae Asset upgraded its security by blocking unusual external access and reported that investor data remained secure.

Ongoing Investigation

As Bithumb continues to investigate the full ramifications of the breach, it is part of a troubling trend of cyber activity against financial institutions in South Korea, as noted during a recent meeting featuring Financial Supervisory Authority Governor Lee Chan-jin who addressed the wave of attacks impacting the industry.