Linea is an Ethereum Layer 2 solution supported by ConsenSys, launched in 2023. It enhances the scalability of Ethereum by utilizing quantum-resistant, lattice-based cryptography to generate zero-knowledge proofs for each transaction on the network, which are then bundled into the Ethereum Mainnet. Linea aims to establish a secure ecosystem in Web3, ensuring that the decentralized internet is safe and accessible for everyone.