MetaMask extension for accessing Ethereum enabled distributed applications, or "Dapps" in your browser! The extension injects the Ethereum web3 API into every website's javascript context, so that dapps can read from the blockchain.MetaMask is indeed a "hot" wallet, in that you use it on a computer connected to the internet. This is usually considered less secure, because if a machine is on the internet, it could be accessed remotely, and keys could be stolen. MetaMask log in is a type of Ethereum wallet that bridges the gap between the user. MetaMask log in is mainly used as a plugin in the web browser. MetaMask provides an essential utility for blockchain newcomers, token traders, crypto gamers, and developers. Over a million downloads and counting! AAVE Logo.