#EthereumSecurityInitiative Ethereum (ETH) is a decentralized, open-source blockchain platform that enables the creation and execution of smart contracts and decentralized applications (dApps). Launched in 2015 by Vitalik Buterin and others, Ethereum introduced the concept of programmable blockchain technology, going beyond the basic transaction capabilities of Bitcoin. At its core, Ethereum allows developers to write and deploy smart contracts—self-executing agreements coded on the blockchain without the need for intermediaries.