Avast Antivirus offers a suite of cybersecurity features, including real-time malware defense, phishing protection, and performance optimization for Windows, Mac, Android, and iOS. It has over 150 million users globally and provides both free and premium plans. The software employs a multi-layered defense strategy, including behavior-based detection and cloud-assisted scanning, and can perform quick and deep scans for malware. Key features include a Wi-Fi Inspector, Software Updater, and mobile protection against harmful applications. Avast blocks over 1.5 billion attacks monthly and offers parental controls in premium plans. It serves users in over 170 countries, particularly in North America and Europe, and operates under Gen Digital, which is publicly traded on Nasdaq.