SBI Crypto Loses $21 Million to North Korean Hackers

By Patricia Miller

Oct 01, 2025

2 min read

SBI Crypto lost $21 million to suspected North Korean hackers who laundered funds through Tornado Cash, highlighting risks for exchanges.

#What Happened with SBI Crypto?

SBI Crypto, a Bitcoin mining pool located in Japan and part of SBI Group, experienced a significant security breach that resulted in a loss of $21 million. This incident has been linked to suspected North Korean hackers who reportedly laundered the stolen cryptocurrency using Tornado Cash, a well-known decentralized mixing service.

#How Was the Stolen Money Laundered?

The funds that were taken from SBI Crypto's wallets were funneled through instant exchanges before being deposited into Tornado Cash. This mixing protocol is designed to obscure the origins of cryptocurrency transactions, making it challenging for investigators to trace the flow of funds. Recent analyses of blockchain activity suggest a troubling trend among groups believed to be tied to North Korea. These entities increasingly target cryptocurrency exchanges, taking advantage of technologies that prioritize privacy to hide their financial transactions.

#What Are Authorities Doing About Mixing Services?

In light of these incidents, international authorities have ramped up their scrutiny of mixing services. These services have previously faced sanctions aimed at deterring their use in illegal financial activities. Tornado Cash itself was sanctioned; however, those sanctions were lifted earlier this year following a ruling from a U.S. court.

#Are Similar Attacks Connected?

Investigations into similar breaches in cryptocurrency exchanges have uncovered links among various attacks. This suggests that these incidents might be part of a coordinated strategy by state-affiliated actors who are intent on funding their operations through stolen digital assets. This growing trend highlights a need for greater vigilance and security within the cryptocurrency space.

Important Notice And Disclaimer

This article does not provide any financial advice and is not a recommendation to deal in any securities or product. Investments may fall in value and an investor may lose some or all of their investment. Past performance is not an indicator of future performance.