I was struck by the monsters and lost hundreds of Dai before forensically figuring out what was happening. I launched a new Dex based on a novel algorithm and figured "no one would know about it" so I left off the front running guards (max slippage). The prices were all out of whack thanks to no activity and every time I tried selling something for Dai at a massive discount, the monsters would strike. It was super depressing but really informative and in retrospect I was proud that I'd figured it out from mere blockchain inspection. Also relieved that I had guards in place.