Wu Blockchain has learned that SlowMist issued a security alert stating that the options protocol Thetanuts Finance was attacked, resulting in a loss of approximately $2.1 million. However, around $2 million of the affected positions were transferred and safeguarded by a white-hat address. SlowMist explained that the vulnerability stemmed from an integer division truncation issue in the `mint(uint256)` function. After the attacker reduced the total vault supply to nearly zero via the `claim(uint256)` function, the division result in the deposit calculation formula was truncated to 0, allowing the attacker to mint unlimited shares at zero cost and withdraw funds. https://www.(wublock123.com)/news/thetanuts-finance-integer-division-exploit-2-1m-loss-62824