2021

Badger DAO lost $120 million when attackers compromised its web interface, injecting malicious code that redirected user approvals to attacker-controlled addresses during fund transfers.

Lido Finance achieved $10 billion in staked Ethereum, establishing itself as the dominant liquid staking protocol and accounting for a significant portion of all ETH validators.

Cream Finance suffered a $37.5 million loss when attackers exploited the lending protocol's pricing oracle using flash loans, demonstrating continued vulnerability in DeFi price feeds.

Olympus DAO's (3,3) bonding mechanics went viral on social media, attracting retail investors seeking high yields through an unconventional protocol mechanism that required bonding cryptocurrency for OHM tokens.

Kazakhstan emerged as the world's second-largest bitcoin mining hub by summer 2021 after Chinese miners relocated operations following China's comprehensive ban, taking advantage of the country's cheap electricity and permissive regulatory environment.

Poly Network suffered a $611 million theft in the largest DeFi exploit to date, with attackers moving assets across multiple blockchain networks through cross-chain bridge vulnerabilities.

THORChain lost $8 million when attackers exploited a vulnerability in its cross-chain swap mechanism, revealing risks in nascent multichain DeFi infrastructure.

Compound Finance launched Compound Treasury, offering institutions institutional-grade access to DeFi vault strategies with simplified interfaces and enterprise security standards.

China's government initiated a comprehensive crackdown on cryptocurrency mining in June 2021, with provincial authorities ordering immediate cessation of mining operations and later implementing a nationwide ban through federal regulatory action.

Convex Finance launched to optimize yield farming strategies on Curve Finance, offering users enhanced returns through pooled voting power and automated vault management.

Aave deployed its lending protocol on Polygon, backed by a $40M liquidity mining program, to serve retail users priced out of Ethereum by soaring transaction costs.

Yearn Finance deployed its V2 vaults with a redesigned architecture offering improved capital efficiency and multi-strategy support for automated yield farming.