Before revision:  These attacks may induce volatility in the `stable' asset and cause perverse incentives for miners, posing risks to blockchain consensus  .
After revision:  These attacks may induce volatility in the `stable' asset and cause perverse incentives for miners, posing risks to blockchain consensus . A variant of such attacks also later occurred during Black Thursday, taking the form of mempool manipulation to clear Dai liquidation auctions at near zero prices, costing 8m .