Ethereum has implemented several initiatives to improve the security of its network. One of the main ones is the adoption of the Proof of Stake (PoS) consensus mechanism, which reduces the risk of attacks and increases sustainability. Additionally, the Ethereum community promotes smart contract audits through projects like CertiK and OpenZeppelin, which provide tools and resources for developers. The implementation of updates like EIP-1559 has improved fee management, increasing transparency. Finally, educating users about security practices, such as using hardware wallets, is crucial for protecting funds and sensitive information on the network.