Devcon VI

Future-block MEV in Proof of Stake
10-11, 17:10–17:20 (America/Bogota), Talk 3

In PoS Ethereum, block proposers are known ahead of time. This allows for new types of MEV, which leverage the ownership of future block space.
Using this, some attacks that were expensive due to arbitrage competition, such as oracle manipulations, become very cheap. There could also be opportunities for incentivizing high-MEV transactions in a future block that you know you will control.

Torgin is a smart contract auditor at ChainSecurity.
He published a paper titled "TWAP Oracle attacks: Easier done than said?" analyzing TWAP oracles and introducing the "multi-block MEV attack", which makes manipulation much cheaper by hiding information from arbitrageurs.