A hacker associated with Radiant Capital has reportedly purchased 5,475 ETH at an average price of $4,330, spending a total of 23.7 million DAI within the past hour. This follows a previous transaction a week ago where the hacker sold ETH at an average price of $4,726. The hacker appears to be engaging in swing trading as ETH prices fluctuate between $4,000 and $5,000.