The system uses encrypted hierarchical transmission, malicious attack real-time monitoring, and attack interception to encrypt users’ information. WiFi Master developed a Security Tunnel Protection System (Chinese: 安全隧道保护系统) to provide users with fundamental protection during each Wi-Fi connection. The system also applies machine learning algorithms in real-time to track predicted 'risky' Wi-Fi hotspots. WiFi Master designed a Cloud Security Detection System (Chinese: 安全云感知系统) to help users detect possible Wi-Fi security risks in advance based on big data tracking. WiFi Master introduced an all-round WiFi Security Matrix for heightened security during the connection. The application's core function, Wifi Search, allows for users to find and connect to available nearby Wi-Fi hotspots. In 2019, WiFi Master Key rebranded as WiFi Master. WiFi Master is available in 223 countries, and is the top Tools app on the Google Play Store in 49 countries. In 2016, WiFi Master became the world’s largest WiFi sharing community, providing over 4 billion daily average connections with a successful connection rate of over 80% worldwide. WiFi Master was launched worldwide, rapidly gaining popularity in Southeast Asia. In May 2015, LinkSure bought the domain name and established a branch in Singapore to expand its overseas services. In 2015, its operating company, LinkSure closed its A round funding of USD $52 million, and became a unicorn company in the mobile internet industry. In September 2012, WiFi Master was first launched in China. Ĭhen Danian shared in an interview with Forbes that 'he was born into poverty in rural China, and using the Internet, he realized that it was a tool to change destinies and pursue happiness by exploring opportunities'. WiFi Master was created by Chen Danian in hopes of 'bridging the digital divide and to help people achieve self-actualization by granting them access to free Internet'. WiFi Master is the 3rd largest software app in China after WeChat and Tencent QQ.

In terms of combined iOS and Android app downloads, WiFi Master is ranked 5th in the world, after WhatsApp, Instagram, Facebook and Facebook Messenger. WiFi Master was first released in 2012, and by 2016 had become the world’s largest Wi-Fi sharing app, with over 900 million users and 520 million monthly active users. The company's founder and CEO, Chen Danian, was previously CEO and co-founder of Shanda. It uses cloud computing, big data and principles of the sharing economy. WiFi Master (formerly WiFi Master Key ) is a peer-to-peer Wi-Fi sharing mobile application software for free Wi-Fi access developed by LinkSure Network.

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