Security Measures

1. Cryptography

   Ethereum relies on cryptographic algorithms, including SHA-3 (Secure Hash Algorithm 3), to secure transactions and maintain the integrity of the blockchain.

2. Consensus Mechanism

   Ethereum 2.0, the ongoing upgrade of the Ethereum network, implements PoS as its consensus mechanism. PoS validators are chosen based on the number of coins they hold and are willing to "stake" as collateral, reducing the energy consumption associated with mining.

3. Smart Contracts

   Ethereum's smart contracts are self-executing contracts with predefined rules and conditions. They are secured using Ethereum's cryptographic features and provide a secure way to automate various processes without the need for intermediaries.

4. Immutability

   Once transactions are confirmed and recorded on the Ethereum blockchain, they are immutable, meaning they cannot be altered or deleted. This feature ensures the integrity of the transaction history.

5. Decentralization

   Ethereum's decentralized nature ensures that no single entity or organization controls the entire network, enhancing security by eliminating single points of failure.