How Does a Proof-of-Stake (PoS) System Utilize the Native Cryptocurrency for Security?

In a PoS system, validators lock up (stake) the native cryptocurrency to gain the right to propose and attest to new blocks. This stake acts as collateral.

If a validator attempts to cheat or act maliciously, their staked funds can be "slashed" (taken away). This economic incentive mechanism secures the network and validates transactions without relying on energy-intensive mining.