Ethereum Merge makes network more vulnerable to attack — Security expert
Ethereum PoS could open a window for unscrupulous validators to exploit the network, a security researcher warns. 
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction: Ethereum Merge makes network more vulnerable to attack — Security expert

### Response: Ethereum PoS could open a window for unscrupulous validators to exploit the network, a security researcher warns. 