BitDefender Free Online Virus Scan. BitDefender Scan Online is a fully functional antivirus product, with a web-based interface and featuring all required elements for remotely antivirus scanning and cleaning: it scans system's memory, all files, folders and drives' boot sector, providing the user with the option to automatically clean the infected files. Incorporating the latest virus protection technologies, BitDefender Scan Online is the world’s first online virus scanner accessible entirely through an Internet web browser. BitDefender Scan Online virus scans for over 70,000+ viruses, worms, trojans and other malicious applications. It includes optional features to virus scan inside of archives, memory, boot sectors, system processes, e-mail databases, and network drives. FREEWARE FILE.