In the past years, the use of malware has been constantly increasing. Even relatively safe browsers such as Chrome are targeted by hackers. It’s not just viruses and malware that are on the rise, but phishing attacks, which pretend to be legitimate sites but are actually designed to steal sensitive data from users, are also becoming more prevalent.

Google’s recent announcement of its newest Android phone, the Pixel 3, makes it clear that Google’s mobile software is increasingly becoming the black sheep in the Android family. At the same time, Microsoft’s recent announcement of the Windows 10 S (formerly known as the Surface Laptop) suggests that Microsoft’s Windows software is in the midst of a major redesign that will restore the company’s once proud position as the premier software vendor in the computer industry.

I’ve always been a fan of Avast. I won’t go into huge detail as most people already know what I’m going to say, but I will give you a quick rundown. Avast is free and has a much more limited set of features than the paid counterparts, but still offers the same protection. I’ve used Avast (free) for many years and have come to trust it as my first line of defense. When it comes to protecting your PC from malicious software, Avast is unbeatable.

There is a wide range of antivirus software available. When it comes to protecting your system from threats like malware, viruses, and zero-day attacks, you can’t afford to use inferior antivirus software. So in today’s article, we compare two of the most popular and widely used antivirus programs – Windows Defender and Avast.

We provide you with all the information, facts and data you need to decide which antivirus software is best for your system. Without further ado, let’s move on to the comparison between Windows Defender and Avast.

Don’t forget to read my previous post: BitDefender vs Avast Antivirus

Introduction to Windows Defender Antivirus :

Windows Defender Antivirus (formerly known as Windows Defender) is anti-malware software that comes pre-installed in Windows. It was the 24th. October 2006, release of a free anti-spyware for Windows XP. It later developed into an antivirus program and replaced Microsoft Security Essentials as part of Windows 8 and later versions.

Windows Antivirus Defender has all the features you would expect from a good antivirus software. It automatically scans recently downloaded files when you open them.

Introduction to Avast Antivirus :

Avast Antivirus is developed by Avast, one of the world’s leading cyber security software companies. Avast is currently used by more than 438 million users in 186 countries worldwide. Every month, Avast blocks more than 3 billion attacks worldwide.

You can try Avast for free on Windows PCs or laptops. Avast is known for introducing new-generation technologies to combat all types of malware, viruses and cyber threats. Avast supports all major operating systems, including Windows, Mac, Android, and iOS. In addition to the free version, Avast offers four paid versions: Avast Pro Antivirus, Avast Internet Security, Avast Ultimate and Avast Premier.

Windows Defender vs Avast Antivirus: Comparison

To compare these two antivirus programs, we will measure each according to these factors:

  1. Safety-related functions
  2. Consumption of resources
  3. threat protection
  4. User friendliness/interface

This comparison is supported by data from various laboratory studies and my own experience. Without further ado, let’s start comparing Windows Defender and Avast Antivirus.

Windows Defender vs Avast Antivirus: Safety functions

We all know that Windows Defender lags behind when it comes to additional security-related features. But it’s worth noting that Windows Defender has pretty much all the basic features that work pretty well. Different types of scans can be performed, such as. B. Full scan, custom scan, quick scan and offline scan. It also provides real-time protection and scans every newly downloaded file before you use it. Other features include a built-in firewall and the Smart Screen utility.

Avast Free Antivirus, on the other hand, has advanced security features. Usually these features are included in the premium packages of other antivirus programs. Like Windows Defender, Avast offers several types of scans, including Smart Scan, Full Scan, and Startup Scan. The Wifi Inspector tool helps you find suspicious wifi networks that can harm your system. Software Updater automatically updates outdated applications. Game mode allows you to enjoy the games without interruption. Email protection, password management and backup drive are some of the other features that make Avast a better security solution than Windows Defender.

Windows Defender vs Avast Antivirus: Consumption of raw materials

Any antivirus program must provide real-time protection while consuming as few resources as possible. To find out which of Windows Defender and Avast Antivirus consumes the least resources, let’s take a look at the tests conducted by AV-Comparatives.

Windows Defender

Avast Antivirus

As you can see, both antivirus programs have similar performance scores. But it should be noted that these tests were conducted on the Windows 10 operating system. In tests run on Windows 7, Avast received a performance score of 5/6 and Windows Defender a score of 4.5/6.

Avast received an ADVANCED+ rating from AV-Comparatives for a very low impact score of 8.9, while Windows Defender received a STANDARD rating for a high impact score of 30.4.

These statistics clearly show that Avast is much easier than Windows Defender. It has a lower impact on system resources than Windows Defender.

Windows Defender vs Avast Antivirus: Protection against threats

Windows Defender and Avast Antivirus have fairly similar detection mechanisms. Both use a database of previously detected malware to detect known malware. In zero-day attacks, both monitor and analyze the behavior of the file to determine if it is suspicious or not.

Also read : Comparison between Avast and Malwarebytes

In the most recent tests by AV-Comparatives, Windows Defender detected 99.5 percent of known malware in September and 99.9 percent in October. As for zero-day malware, Windows surprisingly found 100% of them, but the next month that number dropped to 96.3%. Windows Defender is rated 5/6.

Avast Antivirus, on the other hand, detected zero-day software and known malware 100 percent of the time during the two months. This earned Avast Antivirus a 6/6 from the security experts at AV-Comparatives.

So it’s clear that Avast is a winner when it comes to protecting your system from threats.

Windows Defender vs Avast Antivirus: User interface

Window Defender’s user interface is much easier to navigate and understand. It is very user friendly and I found it very easy to use.

Avast’s user interface is also decent, but compared to Windows Defender, I found it a bit complicated. We see upgrades on premium ads all the time, which is a bit annoying.

So, in my opinion, Windows Defender has a much better and simpler user interface than Avast.

Windows Defender vs Avast AntivirusSummary

  • Characteristics: Avast is the big winner when it comes to features. Windows Defender only has the basic features that any antivirus has, while Avast Antivirus has advanced security features that Windows Defender does not.
  • Consumption of resources : Once again, Avast is a winner when it comes to resource consumption. Many tests have shown that Avast is much friendlier to your computer than Windows Defender.
  • Protection against malware: There is no doubt that Avast has a much better mechanism for detecting malware and viruses than Windows Defender.
  • User Interface: Windows Defender has a better user interface than Avast. It is easy to navigate between the different settings and functions. Avast, on the other hand, has a somewhat complex user interface.


After reading the above comparison, it is clear that Avast Antivirus has an advantage over Windows Defender. So much for the comparison between Windows Defender and Avast Antivirus. I hope you found it informative. Stay tuned for more articles and comparisons like this. Let us know what you think of this comparison by leaving a comment in the comments section. Thank you for reading.Microsoft’s Windows Defender anti-malware software has become one of the most popular security solutions for PCs around the world, but the company could soon be facing some stiff competition, from an anti-virus software developer it did not expect.. Read more about best free antivirus 2021 and let us know what you think.

Frequently Asked Questions

What is the best free antivirus 2021?

If you’ve ever used either of these free antivirus programs, you’re probably familiar with the strengths and weaknesses of each. Windows Defender has a long history of being a relatively lightweight antivirus that works well with modern Windows 10 computers. In fact, it was one of the first third-party antivirus providers for Windows, and is one of the best on the market. Its malware detection is also among the best in the industry. On the other hand, Avast may have some features to recommend over Defender, including an improved security scanner, but Windows Defender has more advanced malware detection capabilities that the program lacks. The past year was a good one for AVs, but in the second half of this year, there were some very close battles and it was hard to pick a winner. In this article, we will compare Windows Defender with other free (and paid) AVs, so that you can make a quick and informed decision regarding which AV will serve you best.

Is Windows Defender enough 2021?

Windows 10 users have enjoyed a stellar run with the free antivirus to help clean up malware and viruses, but the future is nigh. Windows Defender and Avast have both been updated to include more capabilities, with Avast adding a paid subscription that offers additional features. However, given the fact that both offer free versions, their overall effectiveness and capabilities is of interest. The Avast vs Windows Defender debate has raged on for almost as long as Windows has been around. Avast is constantly trying to outdo Windows Defender in a number of ways, but at the end of the day, it is still Windows Defender that’s the most popular. However, Windows Defender is lagging behind in multiple areas, including a lack of real-time protection, a lack of support for the latest technical features such as virtualization and IoT, and a lack of integration with other products and services.

Do I need Avast if I have Windows Defender?

If you are running Windows 10 and are using Avast Free Antivirus, you may have noticed that one of the updates has made Avast appear in Windows Defender. This happens when you run Windows Defender on the lowest setting for the first time. So, now you are wondering, do I need Avast? While the two security suites are closely matched when it comes to features, the price of Avast is a bit more expensive at $60 a year when compared to Windows Defender’s $40 a year cost.

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