Cryptocurrency markets witnessed a sharp decline early Monday, continuing the downward trend established at the end of November, primarily driven by concerns surrounding the decentralized finance (DeFi) platform, Yearn Finance. Bitcoin (BTC), the leading cryptocurrency by market capitalization, fell by more than 3%, dipping to approximately $87,000 during early trading hours in Asia. Ethereum’s native token, Ether (ETH), suffered an even steeper decline of 5%, while other major cryptocurrencies, including Solana (SOL), Dogecoin (DOGE), and XRP, all saw their values drop by over 4% according to data from CoinDesk.
The sell-off intensified following an alert from Yearn Finance regarding a potentially serious incident involving its yETH liquidity pool. Although the platform reassured users that its V2 and V3 Vaults remained secure and unaffected, it was reported that an attacker might have exploited a vulnerability to mint large quantities of yETH in a single transaction, effectively draining liquidity from the pool. Reports suggest that approximately 1,000 ETH, equivalent to around $3 million, was siphoned off and subsequently funneled through mixers, including Tornado Cash.
The liquidity pool token, yETH, is made up of various Ethereum Liquid Staking Derivatives (LSTs), and the exploit has ostensibly resulted in losses totaling $9 million for Yearn Finance. According to blockchain security firm PeckShield, the attacker’s wallet retained approximately $6 million in tokens post-transaction. This incident followed closely on the heels of a significant hack at South Korea’s leading cryptocurrency exchange, Upbit, raising serious concerns about the security robustness of the crypto market amid escalating institutional investments.
The cascading effects of the sell-off were evident in the form of liquidations exceeding $400 million in leveraged crypto futures during the early trading session, predominantly impacting long positions. This was indicative of many traders who had positioned themselves for a price rebound only to be caught off guard by the market’s sudden downturn.
In terms of monthly performance, Bitcoin ended November with a notable 17.5% loss, marking its most significant decline since March. Despite a price recovery from nearly $80,000 to above $90,000 in the latter week of the month, the overall trend remained grim. Ethereum experienced its worst monthly performance since February, dropping 22%.
The overall disappointing performance of cryptocurrencies aligns with a notable decline in institutional demand. Data from SoSoValue revealed that U.S.-listed Bitcoin exchange-traded funds (ETFs) experienced net outflows of approximately $3.48 billion in November, marking the second-largest redemption recorded. Ether ETFs faced even steeper losses, witnessing outflows totaling a record $1.42 billion.
As the market continues to reel from the effects of these exploits and declining institutional confidence, investors are left grappling with uncertainty about the next steps for the cryptocurrency ecosystem.

