Avira Free AntiVirus provides comprehensive protection with important security and configuration functions and protects you against viruses, worms, Trojans, ad/spyware, dialers, bots and dangerous ''drive-by'' downloads. Avira AntiVir's advantages include low system resource usage, user-friendly central configuration, scanner (On-Demand Scan) with profile-controlled and configurable search for all known types of malware, guard (On-Access Scan) for continuous monitoring of all file access attempts, MailGuard (POP3- and SMTP-Scanner) for the permanent checking of emails for viruses and malware, exclusive download server for faster updates, user-defined update intervals, Phishing and Rootkit Protection and an integrated failsafe security system.