360手机卫士, a utility tool by Beijing Qihoo Technology Co Ltd, is a trusted life protection assistant with over 900 million users. The app offers various features such as 24-hour real-time indoor and outdoor security monitoring, updated harassment interception with junk message filtering, and new functions like software membership subscription management. It also includes a female safety protection center, real-time tracking for night safety, disguised sound for indoor security, WiFi-based pinhole camera detection, and comprehensive harassment interception with six layers of protection. Additionally, it provides features like WiFi connection, contact synchronization, photo cleaning, data usage management, privacy space encryption, subscription management, camera spying detection, secure QR code scanning, network speed testing, notification center plugin, and quick launcher for easy access to all features.