Ive read before the issue on Uniswap when BZRX launches their IDO but as Ive read the article the author explained how the guy made 500k usd but not in the form of hack but incorporate a defi trading bot. As far as Ive known, using bots on trading is common its just happened that we can see now the cons of smart contract where it can be easily penetraded by the likes of this. Im not sure whether this included or considered as hack history. Actually the guy is smart. Does he violate any rule on dex? Not sure but this could be raise on authority as one of the example of threats on defi business.