Kinto founder Ramon Recuero has released a detailed post-mortem report on the K token hack. The attack stemmed from a hidden backdoor vulnerability in the ERC-1967 Proxy standard, which allowed the attacker to bypass block explorer detection, upgrade K's proxy contract on Arbitrum, and mint unlimited tokens. Subsequently, approximately $1.55 million in liquidity was extracted from Uniswap V4 and Morpho Blue. [Foresight News]