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Buy Now. Download a Free Trial. How Antivirus Works How do antivirus apps and antivirus software work? Malware Protection Norton security technology includes multiple defenses against viruses and malware. How do you know if you have malware?

How does malware put your computer at risk? Viruses and Malware What does Norton antivirus and security software help protect against? Virus Removal Think you have a virus? Get Norton Power Eraser. Get Security Software. Free Antivirus How do free antivirus programs compare? Learn more about Norton device security solutions for Windows.

Learn more about Norton device security for Android. Learn more about Norton device security for IOS. Which antivirus software is right for you? Antivirus, malware protection, and more features to help protect your device Norton AntiVirus Plus and Norton plans include antivirus and malware protection, plus an array of additional features to help protect your PCs, Mac, Android and iOS devices, including:. Find the right solution for your needs. Explore Norton AntiVirus Plus.

Explore Norton plans. What is Antivirus? What is the difference between antivirus and internet security? Why is it important to have an antivirus program? How do you check for a virus on a computer? How do you get rid of a virus on your computer?

See offer. For a limited period, we have a special offer for you. ZoneAlarm Free Antivirus. Free Download Free Download. Free, Reliable and Powerful The ZoneAlarm Free Antivirus protects you from viruses, malware, spyware, and other cyber threats while securing your identity and privacy from hackers.

Personal Firewall Our firewall makes your PC invisible to hackers and protects your data from being compromised. Web Secure Free Web Secure Free Chrome extension provides you with complete browsing protection tools that keep your online experience as safe as possible. Intelligent Antivirus Detect and block viruses, malware, spyware, ransomware and phishing. We use smart analytics to stop threats before they affect you. CyberCapture Automatically send suspicious files for analysis in the cloud, and push a cure to all Avast users if it's a threat.

Wi-Fi Inspector Automatically detect weaknesses in your home Wi-Fi and strangers piggybacking on your network. Smart Scan Find all those cracks which allow malware to slip in, from unsafe settings and passwords to suspicious add-ons and out-of-date software. Layer upon layer of security. Ryan R. Eric S. Daryl C. Why is Avast one of the best free antivirus solutions?

How does Avast Free Antivirus protect against so many types of threats? How does Avast Free Antivirus affect performance? How do I detect and remove viruses and other malware? All you need is a PC with Windows 10 , 8. Windows 10 compatible. Browser trackers enable companies to collect a significant amount of data and track your online activities.

You can easily become a victim of adware, which is not only intrusive but also slows down your device. The security of your devices is also at risk, especially when shopping online or using cloud-based services. Cybercriminals are on the lookout for personal data, trying to steal passwords, bank details, or even hijack your computer access to use your devices for attacks against others.

Keyloggers, rootkits, spyware, Trojans, and worms are just some of the malware types that can attack your system. To keep your system secure and protect your privacy, you need to install an antivirus software, designed to detect and remove malware. With regular virus scans, you can protect your computer against a wide range of threats. The Windows Defender Antivirus is installed by default on all devices running Windows While it is a good option for conducting basic virus scans, it does not offer complete protection.

Furthermore, Windows Defender is not updated often enough to keep up with the new threats. To detect the new types of malware that are being spread daily, cybersecurity experts recommend an additional antivirus to conduct real-time virus scans and alert you as soon as a malicious threat is detected. Avira Free Security is the best free antivirus for Windows, with an impressive track record in tests performed by leading industry experts.

It also includes a free VPN for private and secure browsing and built-in performance optimization tools to keep your system running fast and efficiently. Avira Free Security is an all-in-one solution for a carefree digital life. The fingerprints of new unknown files are automatically uploaded to our cloud and analyzed in real-time.

This way, we protect you from Zero-Day-Attacks, where cybercriminals use new methods to infiltrate your system. Our Protection Cloud can detect these never-seen-before attacks. Once a new thread has been identified, you are instantly protected against it. With our Firewall Manager you can optimize the protection with just one click. Download Free Antivirus Software Avast One is free antivirus plus essential privacy, security, and performance tools. Avast One is free antivirus plus essential privacy, security, and performance tools.

Our free download now includes much more to keep you safe and private online, including free antivirus, VPN, and firewall. Introducing the new Avast One. Private connection with VPN. Essential protection for your life today A free all-in-one service combining antivirus, VPN, performance enhancement, and security tools to help you stay private and safe. Learn more. Avast Free Antivirus.

Easy to install, effortless to use. Get essential antivirus protection. Avast Free Antivirus scans Windows devices, like your laptop or desktop PC, for privacy, security, and performance issues, then tells you how to fix things instantly.

Over million users worldwide trust Avast. Join them. Intelligent Antivirus Detect and block viruses, malware, spyware, ransomware and phishing.

We use smart analytics to stop threats before they affect you. CyberCapture Automatically send suspicious files for analysis in the cloud, and push a cure to all Avast users if it's a threat.

Wi-Fi Inspector Automatically detect weaknesses in your home Wi-Fi and strangers piggybacking on your network.