Bitcoin and other major cryptocurrencies came under heavy selling pressure Friday, October 30, after Binance disclosed a massive security breach involving approximately $6.3 billion in digital assets, potentially marking the largest cryptocurrency theft in history and raising fresh concerns about the security of centralized trading platforms.
Bitcoin fell more than 3% to a six-week low near $76,368 before recovering some losses, while Ethereum dropped to approximately $2,178, its lowest level in two months. Binance-linked BNB also declined sharply as investors reassessed the risks surrounding the world’s largest cryptocurrency exchange.
The attack occurred Thursday, October 29, when hackers transferred billions of dollars from Binance-linked wallets across multiple blockchains in approximately 20 minutes. Blockchain analytics firms TRM Labs and Chainalysis have linked the operation to North Korean hackers, citing similarities to previous attacks attributed to the country’s cybercriminal networks.
Binance initially identified a compromised employee laptop as a possible entry point. However, the company’s investigation subsequently uncovered additional security breaches, suggesting a more sophisticated attack involving weaknesses in transaction authorization and wallet controls.
Binance co-CEO Richard Teng said Friday that attackers exploited Ethereum’s account-delegation functionality to bypass normal approval procedures and gain control of a cryptocurrency wallet. Investigators are still working to establish the complete sequence of events.
The exchange has temporarily suspended withdrawals while rebuilding and testing its security infrastructure. Binance is targeting Sunday for the restoration of withdrawal services and plans to publish updated proof-of-reserves information Monday.
Binance has pledged to cover the losses using company resources. The exchange also reported that approximately $3 billion in affected assets had been frozen through cooperation with blockchain networks, stablecoin issuers, and other industry participants.
Despite those assurances, the incident has triggered a broader reassessment of cryptocurrency market risk.
The selloff has been particularly damaging for leveraged traders. Approximately $1.5 billion in cryptocurrency futures positions were liquidated as falling prices forced investors to close positions, adding to downward market pressure.
Publicly traded cryptocurrency companies also faced selling pressure. Shares of Coinbase Global and Strategy declined in extended trading, illustrating how concerns about digital-asset security can quickly spread into traditional equity markets.
The breach comes at a difficult time for cryptocurrencies, which were already facing pressure from elevated U.S. interest rates and softer demand from exchange-traded fund investors.
For Bitcoin, the immediate concern is whether the security incident leads to sustained withdrawals from centralized exchanges or further liquidation of leveraged positions.
A prolonged disruption at Binance could reduce market liquidity, increase trading volatility, and weaken investor confidence. Additional selling could also emerge if stolen assets are transferred to exchanges and converted into other cryptocurrencies or cash.
Ethereum and smaller digital assets may face even greater volatility because their markets generally have less liquidity than Bitcoin.
However, the market impact will depend heavily on how quickly Binance restores normal operations, demonstrates sufficient reserves, and provides clarity regarding the security failures.
Standard Chartered’s digital-assets research team has warned that cryptocurrency prices could remain under pressure until more details emerge and frozen assets are addressed.
The incident may also accelerate interest in decentralized exchanges and self-custody solutions, although those alternatives carry their own technological and security risks.
For investors, the Binance attack highlights a fundamental challenge facing the cryptocurrency industry: even as digital assets become more integrated into mainstream financial markets, cybersecurity vulnerabilities and exchange-related risks remain significant.
With billions of dollars potentially at stake, the coming days could prove critical in determining whether the selloff represents a temporary reaction to a major security incident or the beginning of a broader decline in cryptocurrency prices.
