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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. 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Scan Find all those cracks which allow malware to slip in, from unsafe settings and passwords to suspicious add-ons and out-of-date software.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 Rentfro. Eric Scherer. Daryl Colley. Why is Avast one of the best free antivirus solutions? How does Avast Free Antivirus protect against so many types of threats?

Will Avast One free antivirus software affect the performance of my device? How do I detect and remove viruses and other malware? All you need is a PC with Windows 10 , 8.

Essential free protection is just one click away. Would you like this app for Android? Would you like this app for Windows or Mac? Would you like this app for Windows or Android? Would you like this app for Windows or iOS? Would you like this app for Mac or Windows? Would you like this app for Mac or Android? Would you like this app for Mac or iOS? The load on the hardware is less, which increases its life. It is an 'install and forget' type antivirus, which means the installing, renewing and upgrading processes are all designed as routine task and are very simple.

The automatic updation of the software allows it to stay up-to-date and deliver constant protection against newly emerging threats. The Device Control enables the antivirus to monitor files and prevent any unauthorized copying of the data to an external hard drive preventing data theft. Last but not least, the support provided by the antivirus in a wide variety of languages makes it more user-friendly.

The process of transferring your license is also straightforward. You can transfer your license for a different device like a macOS or Linux operating system. It detects and blocks threats while you browse the Internet, participate in social networks or run programs. All this without affecting the. Sadly, its malware protection has suffered for it. Features: Qihoo comes with an impressive suite of bonus features, including cleanup and tuneup utilities, an adblocker , and more.

You may have been expecting to see some big-name antivirus players on this list, like Norton, McAfee, or Malwarebytes. Norton offers only paid antivirus software. McAfee is the same as Norton — a free trial, but no free version. You can find this in their paid products, but why not go with a full-service free option instead?

You can avoid some forms of malware by practicing smart digital habits like using secure messaging apps and checking that websites are safe before you use them. But hackers are craftier than ever. Social engineering tricks , phishing scams, malicious URLs and infected downloads… the list goes on.

Cybercriminals find ways to reach even the most careful among us. Make sure to choose one of our best security software options with robust protection against all kinds of online threats.

Mobile devices may also be susceptible to malware, so protect yours with a security program that can remove malware from your smartphone. When it comes to the best virus scanners and best anti-malware tools, there are tons of choices.

Effectiveness: Of course, the most important factor is how effective the antivirus engine is against malware and other threats. Gone are the days when the primary internet baddie was the computer virus. Impact on system resources: No one wants an antivirus that slows down your PC. We recommend starting with one of the strongest best free internet security options above. Privacy: Antivirus programs need access to all parts of your machine to properly protect it.

That means you should choose a program from a reputable developer with a reasonable and transparent privacy policy. But you probably have additional devices, right?

Malware, phishing, and other threats also affect Macs, Androids, and even iPhones. Some companies offer multi-device subscriptions so you can easily protect yourself with free antivirus software for Mac , cybersecurity for Android , and mobile security for iOS.

Most companies offer advanced features, add-ons, and customization options in their paid products. But our above list of the best free programs contains options for excellent virus and malware protection — and many include great features in their free versions, too.

Microsoft has put resources into trying to make its built-in solution the best free antivirus for Windows But while it has improved by leaps and bounds in recent years, Windows Defender is still not as good as many third-party options out there, like AVG, Avast, Kaspersky, and BitDefender. Beyond test results, there may be other issues with relying solely on Windows Defender.

Absolutely not. Product and OS updates often include patches that plug security holes. Ignoring security updates can make you far more vulnerable to malware. With these persistent limitations to Defender, most AV experts still recommend you opt for one of the best free anti-malware software options on our list above. These labs have the resources to test thousands of real, active malware samples of all kinds viruses, worms, ransomware, zero-day exploits, Trojans , botnets , backdoors, and more and to perform the same tests on different antivirus software simultaneously to guarantee accurate comparisons.

These labs are certified by independent auditors, and many work with universities to ensure state-of-the-art testing methodology.