CashCowCoin’s unverified trading router implementation contract had a flawed sell() flow. After the PancakeSwap Router completed the CCC→WBNB swap, the proxy called a privileged token function to transfer post-tax CCC from the Pair to the dead address and invoked Pair.sync(). This burned the sell-side CCC while permanently retaining the reduced WBNB reserve, enabling repeated draining of the pool’s WBNB through about 80 iterative sell cycles.