September 4, 2020 Chainlink nodes lost 700 ETH in attack last week.

According to Chainlink node operator Certus One, nine Chainlink nodes were targeted recently in an attack that successfully drained 700 ETH from their hot wallets. The attackers essentially spammed the network with price feed requests, causing node operators to spend large amounts of gas. They then used this spare gas to mint Chi tokens before sending the assets through a mixer to preserve anonymity. The attack lasted approximately two hours and did not compromise the integrity of oracle price feeds, Chainlink’s team says.