Mask Network is a technology company that develops a browser extension to integrate privacy and Web3 functionalities into social media platforms like Facebook and Twitter/X. The extension enables users to log in with a Mask ID, connect their wallet, and use Web 2.0 sites with Web3 integrations. It offers features like encrypted messaging, social trading tools with crypto asset price widgets, NFT avatar verification, personal Web3 profile creation, and a marketplace for buying and selling NFTs. Additionally, Mask Network provides a decentralized file storage solution and an environment for purchasing crypto assets using fiat currency.