MetaMask is an Ethereum wallet that allows you to manage Ethereum as well as all ERC-20 tokens running on the Ethereum blockchain like the Basic Attention Token (BAT), and many others. It’s not just a wallet, it’s also an Ethereum browser that gives you the ability to interact with decentralized Ethereum apps right from your web browser. It lets websites recover data from the blockchain and allows its users to manage their various portfolios in securely
Using MetaMask can greatly reduce the risk of phishing or theft by corrupt websites as your private key remains in MetaMask. MetaMask also has an anti-phishing tool with a regularly updated list of corrupt websites. Currently, this extension is available on 4 browsers: Chrome, Firefox, Opera and Brave.