Actually, if you were familiar with how these things work, the attack was pretty carefully worked out. That said, since all this code was copycat crap by folks

Actually, if you were familiar with how these things work, the attack was pretty carefully worked out. That said, since all this code was copycat crap by folks who didn't really understand it - not surprised. In other words, the code really was fine - the folks running the pool were just clueless in terms of what they let trade (ie, not suited to code).