The decentralized finance (DeFi) sector faced a turbulent week as total value locked (TVL) across major blockchains saw significant declines. Ethereum's TVL decreased by approximately 13% to $74.2 billion, while Solana and Arbitrum experienced drops of about 14%, reaching $10 billion and $3 billion, respectively. Other blockchains like BNB Smart Chain and Base also reported double-digit percentage losses. The sharp decline in TVL is attributed to heightened security concerns following notable exploits. A $120 million rounding error exploit on Balancer and a $93 million asset loss on Stream Finance have raised alarms about the vulnerabilities within the DeFi ecosystem, prompting investors to reassess their positions.