Fake Website Shield: prevents criminals from hijacking DNS (domain name system) settings.File Shredder: deletes all data to help prevent unintended or unauthorized recovery.Webcam Protection: forces untrusted apps to get permission before enabling a webcam.Toolbar Remover: removes unwanted or potentially dangerous browser toolbars and extensions that may have been installed without permission.Wi-Fi Guard: warns when connecting to an unsecure Wi-Fi network.Link Scanner: warns of suspicious internet links.Email Shield: blocks dangerous email attachments that could contain viruses and other malware, as well as malicious phishing emails.Do Not Disturb and Silent Modes: to block pop-ups during game play, movie watching and presentations.Its malware protection is top-notch, its system impact is minimal and it's dialed back. Behavior Shield: protects against zero-day attacks (threats that exploit previously unknown viruses and other vulnerabilities) and keyloggers that secretly record typed passwords and bank account details. Avast offers the best free Mac antivirus Avast Security for Mac may cost nothing, but it doesn't cut corners.Turbo Scan: shortens scanning times by skipping files the software already knows are safe.The labs love it, and it scores high in our phishing protection test. AI Detection: proactively identifies malware samples that haven't yet been catalogue by the company's ThreatLabs team. Avast Security for Mac delivers effective malware protection along with a network security scanner.