Best free antivirus programs for Windows and Mac. Windows users have the largest choice when it comes to free antivirus programs. Given Windows has the largest market share for both consumers and businesses, it should come as no surprise that free options abound. The best free antivirus programs for Windows and Mac computers include. Free Antivirus for Mac While Apple devices are generally less susceptible to hackers, malicious websites and unsecured networks still pose serious threats to your device and privacy. That’s why McAfee Total Protection provides Mac-specific antivirus and anti-malware capabilities. Security Antivirus free download - Trend Micro Antivirus Plus Security, CM Security AppLock AntiVirus, Avast Free Antivirus, and many more programs. Bitdefender Antivirus for Mac combines accuracy and speed so you get ultra-fast scans and the best detection rate in the industry. 24/7 Cloud-Based Guard Duty. Through permanent updates, Bitdefender Antivirus for Mac is always aware of zero-day attacks.

How Does Antivirus Software Work?

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Any time you open or download a new file, an antivirus program will scan the files for viruses and other harmful executables. Almost every free anti virus software today features multiple scanning detection processes. The most basic detection process is called “specific detection.” It works by scanning a file for various sets of characteristics and checking these characteristics against a list of already known malware. This process is an essential component of an antivirus software, and essential for every free PC antivirus, but it is also easy for cybercriminals to evade. All a cybercriminal must do is modify the malware code slightly to render it undetectable.

The top free antivirus, Comodo Antivirus, does not rely only on specific detection. Comodo also uses heuristic detection and containment to ensure that even unknown malware cannot compromise our users’ computers. Heuristic detection is a method of analyzing a file to determine if it contains suspicious code. If suspicious code is detected then the antivirus deletes the file or recommends it for containment. Files run in Comodo containment are kept in a sandbox environment, separate from your operating system. Heuristics is about detecting virus-like behavior or attributes rather than looking for a precise virus signature that matches a signature on the virus blacklist.

A common misconception that lingers to this day is that free antivirus protection is not adequate to deal with malware threats. Though this pay have been true in the past, today’s best free antivirus software have features that can keep you protected from even the most advanced malware. The best free antivirus on the market today, Comodo Antivirus offers features more advanced than most paid antiviruses. Comodo Antivirus gives users a major advantage over not only an antivirus-free environment, but also the best paid antivirus products on the market.

Best Virus Protection Software from Comodo

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Comodo's virus protection technology has proved its mettle for battling virus threats through tried-and-tested methods. Infection Defense+ barricades the access of any dubious programs at all critical checkpoints, while the Auto-Sandbox Techniques isolates the potentially harmful programs in a restricted environment without letting it affect your workflow.

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Comodo antivirus 2020 also features the Default Deny Protection which, as opposed to other security software, denies access to a program if it's not in Comodo's comprehensive whitelist. The cloud-aware security features are light on the system and provide constant virus scanning and behavior analysis report.

AVG AntiVirus FREE is a fast, effective and extremely popular antivirus tool, mixing the best of AVAST and AVG's technology.

A stylish and appealing Windows 10 interface makes it easy to see the latest security status for various areas, with panels for 'Computer' and 'Web & Email' (there's also greyed out 'Hacker Attacks', 'Private Data' and 'Payments' which are modules in the paid-for AVG Internet Security 2019).

Each panel represents an aspect of AVG FREE's protection - antivirus, browsing protection, behavioural monitoring and email scanning - and you can click any of these to enable, disable or configure it to suit your needs.

You'll probably be more interested in checking your system for malware, though, and that's just as straightforward: click 'Scan Computer' and watch as the program goes to work.

If you need more control, click the gear icon next to 'Scan Computer' and you're able to check specific files or folders, run different scan types, or use the flexible scheduler to automatically run scans whenever you like.

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Upgrading to AVG Internet Security gets you improved browsing protection, priority security updates, a smart firewall, spam filter, file encryption, a software update tool and much more.

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Verdict:

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The new AVG AntiVirus FREE has gained some welcome extras from the new AVAST input, and we'll be interested to see how that translates into protection levels.