Flooring Protocol V2 and BitmapPunks (BT404 / $BMP) were exploited due to a BT404-style packed ownership logic vulnerability (malicious high-bit token ID alias + unchecked integer underflow). The attacker minted near-infinite fpTokens/$BMP with a dust amount of WETH, drained liquidity pools, and extracted high-value NFTs (e.g., BAYC, CryptoPunks) at low cost. Yuga Labs quickly intervened with a white-hat operation via GrailsOTC, rescuing 68 NFTs worth over $500,000, now held safely for return after fixes.