The white hat recovering 2 million is the only good news tonight, but the truncation issue in the mint function's division warrants all protocols to review their code.

Wu Shuo learned that SlowMist issued a security warning stating that the options protocol Thetanuts Finance was attacked, resulting in a loss of approximately $2.1 million, but about $2 million of related positions were protected by white hat addresses. SlowMist stated that the vulnerability stemmed from an integer division truncation issue in the mint(uint256) function. After the attacker reduced the total treasury supply to nearly zero through claim(uint256), the division result in the deposit calculation formula was truncated to 0, allowing the attacker to infinitely mint shares at zero cost and withdraw funds.