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Avast or Microsoft Security Essentials

I. Introduction

Cybersecurity threats like malware, viruses, and hacking attacks pose serious risks to our personal privacy and data security. With the dramatic rise in cybercrime in recent years, effective antivirus software has become an essential tool for protecting our online systems and devices. While there are a number of solid antivirus options available today, two popular free choices are Avast Antivirus and Microsoft Security Essentials (MSE).

Both Avast and MSE are designed to guard against all types of malicious software threats and prevent unauthorized system intrusions. At their core, they use real-time security scanning to monitor for malware and other suspicious activity across files, network activity, websites and both inbound and outbound traffic. They also incorporate a range of other data protections including firewalls, email scanning, anti-spam and anti-phishing tools. However, Avast tends to provide a broader feature set outside of core antivirus protection.

This article provides an in-depth comparison of Avast Antivirus and Microsoft Security Essentials in critical categories like malware detection and removal capabilities, impact on system resources, user interface design, available features beyond antivirus, and overall cost and value. We’ll evaluate how the two options stack up in serving the needs of both casual home users and enterprise IT environments. Let’s begin by taking a closer look at the offerings and capabilities of both Avast and MSE.

II. Microsoft Security Essentials

Developed and maintained by Microsoft, Security Essentials (MSE) is one of the tech giant’s flagship free antivirus software products. First launched in 2009, it continues to serve as a streamlined, no-cost cybersecurity solution for Windows users.

A. Description of MSE

MSE provides essential, dependable malware protection powered by the same antivirus engine used in premium Microsoft security products. It guards against a wide range of threats like viruses, trojans, spyware, rootkits and other malicious software attacks. It also incorporates protection from phishing and online fraud attempts.

As a lightweight application, MSE offers reliable threat detection and removal without significantly slowing down system operations or resource efficiency. Updates automatically download and install in the background on a regular basis to ensure up-to-date virus definitions.

B. Features and Capabilities

Key capabilities of MSE include:

  • Real-time protection against viruses, spyware, rootkits and more
  • Automatic updates for up-to-date threat libraries
  • Built-in phishing and online fraud monitoring
  • Lightweight design for minimal system impact
  • Easy, user-friendly setup with intuitive controls
  • Free for personal/non-commercial use

C. Supported Operating Systems

MSE is designed exclusively by and for Microsoft products. It supports the following Windows operating systems:

  • Windows 10
  • Windows 8/8.1
  • Windows 7
  • Windows Vista
  • Windows XP

D. User Interface and Ease of Use

The user interface for MSE mirrors the clean, straightforward look and feel of other Microsoft apps. After quick initial installation, the main window displays current protection status as well as options for running manual scans. There are also direct links to update security software, view recent scan history, adjust real-time protection settings and access troubleshooting tools.

Controls and navigation options are basic and intuitive throughout. With its simple design flow focused solely around core antivirus protection, MSE offers easy operation ideal for casual everyday users. More advanced configuration options are limited for those seeking more complex custom settings.

E. Resource Consumption

As a program built for minimal drain on system resources, MSE maintains a small hard drive footprint while having little impact on operating speeds and efficiency. It runs smooth and light even alongside multiple other active programs and processes. Specific independent tests of MSE’s system resource consumption have shown:

  • Hard drive space used: ~260 MB
  • Idle RAM usage: ~40 MB
  • Average CPU usage during idle operation: 1-2%

III. Avast Antivirus

From Czech-based firm Avast Software, Avast Antivirus represents one of the most widely-used security platforms globally. Maintaining an expansive threat detection network, Avast provides sophisticated layered protection for home users and businesses alike.

A. Description of Avast

Avast offers advanced real-time scanning and threat removal bolstered by machine learning algorithms and one of the industry’s largest malware databases. Extensive operating system support allows versatile implementation across devices and configurations.

With both free and premium paid plans available, Avast gives users strong antivirus defense scaled to individual needs. The flagship Avast Premium Security suite packs added features like password protection, file shredding, software updates, and more.

B. Features and Capabilities

Key features available through Avast include:

Core Antivirus Features

  • Real-time scanning for malware detection
  • Virus definition auto-updates
  • Browser add-on for secure web browsing
  • WiFi intruder detection
  • Protection from fake websites and URLs
  • Rescue disk for recovery from severe infections
  • Sandbox technology for testing suspicious files in a secure virtual environment

Additional Tools in Premium Paid Versions

  • Secured browsing with VPN
  • Ransomware shield
  • Webcam protection from peeping
  • Automatic software patch updates
  • Data shredder to permanently delete files
  • Passwords manager
  • Anti-spam and anti-phishing filters

C. Supported Operating Systems

Avast maintains wide cross-platform support, securing devices across both desktop and mobile operating systems. Compatible systems include:

Desktop OS

  • Windows: 7, 8, 8.1 and 10
  • MacOS X (10.10 Yosemite and above)

Mobile OS

  • Android
  • iOS

D. User Interface and Ease of Use

Installation and setup of Avast is quick and simple, with custom options available to tailor scanning. The main interface homepage provides a clear overview of system protection status while allowing users to run manual virus scans with a single click. Left-side navigation gives direct access to features like WiFi scanning, software updates, and troubleshooting.

The slider and toggle controls make it easy to enable or disable different security components like web shield and mail shield. While the wealth of features and menu links give the interface a busier look compared to the ultra-minimalist MSE, core functions remain easy to navigate. Novices may need some initial guidance orienting themselves, but the interface logic follows a straightfoward flow overall.

E. Resource Consumption

As a leading antivirus platform built for performance and efficiency at scale across systems, Avast treads lightly on device resources across the board while carrying out intensive threat detection behind the scenes. Specific independent assessments of resource consumption have shown:

  • Hard drive space used: ~1.6 GB
  • Idle RAM usage: ~250 MB
  • Average CPU usage during idle: 1-3%

So while utilizing more local disk space, Avast roughly matches MSE on CPU and RAM efficiency. This allows both secure protection as well as maintaining responsiveness for other everyday computing usage.

IV. Comparison

We’ve covered the core background, features and capabilities offered through Microsoft Security Essentials and Avast Antivirus as cybersecurity and anti-malware tools. Let’s now directly compare them across some key criteria:

A. Malware Detection and Removal Capabilities

Numerous independent testing labs regularly evaluate the ability of popular antivirus platforms to detect emerging malware samples, identify malicious URLs, shield against network intrusion and effectively remove infections from endpoints.

Recent independent testing results:

AV-Test Institute Evaluation (6 month 2021)

  • Protection Score:
    • MSE: 5.5 out of 6
    • Avast: 6 out of 6
  • Performance Score:
    • MSE: 5.5 out of 6
    • Avast: 6 out of 6

SE Labs Assessment (Q3 2021)

  • Protection Accuracy:
    • MSE: 100%
    • Avast: 100%
  • Legitimate Software Classification Accuracy:
    • MSE: 100%
    • Avast: 100%

So by leading independent evaluator criteria focused specifically on malware, both MSE and Avast show extremely strong virus detection and system protection capabilities, while avoiding false positives against legitimate files and applications.

However, Avast’s threat response network comprises significantly larger threat databases compared to Microsoft’s antivirus libraries. Avast also leverages more advanced heuristics and machine learning algorithms to identify emerging and never-before-seen malware strains. This gives it an edge in detecting cutting edge attacks.

B. Impact on System Performance

As outlined previously, both platforms maintain efficient background operation consuming minimal CPU and RAM during idle monitoring states for low footprint on device performance and responsiveness.

However, the depth of Avast’s web traffic scanning does require more active processing cycles compared to MSE when visiting websites, using internet-connected apps, and downloading new software and files. So users may experience slightly more latency during active online activity. Going beyond basic antivirus scanning, additional shields in Avast forguarding email, web browsing and network behavior also utilize additional device administrator resources.

So MSE has less detectable impact on overall speed and performance for other programs and processes, while Avast provides more robust and versatile protection even at the cost of slightly higher overhead.

C. User Reviews and Ratings

Both platforms see largely positive user reviews and ratings in the app marketplace and software download channels where they are distributed. As of writing:


  • CNet Editors Rating: 4 out of 5 stars
  • Softpedia User Rating: 4 out of 5 stars


  • CNet Editors Rating: 4.5 out of 5 stars
  • Softpedia User Rating: 4.5 out of 5 stars

So reviewers highlight ease of use and installation along with reliable threat blocking from both antivirus solutions. Some Avast users cite the higher system demands during peak scanning activity as a drawback compared to lighter alternatives. MSE gets docked by some users for having less full-featured scanning configurations compared to other market options.

D. Additional Features

Outside core signature-based malware detection and removal that both platforms share, Avast contains significantly more additional security capabilities such as:

  • Webcam intrusion detection
  • Ransomware protection
  • WiFi and home network scanning
  • Password manager
  • Software patch manager
  • Data shredding
  • Anti-spam

It also provides advanced options like a bootable rescue disk for recovery from severe infections.

MSE’s streamlined design focuses exclusively on essential antivirus capabilities. It does contain integrated protection against online phishing attempts. But lacks the depth of extra security tools available from Avast.

V. Conclusion

Both Avast Antivirus and Microsoft Security Essentials offer reliable no-cost malware protection well-suited for the needs of price-conscious home PC users. Key differences come down to priorities around lightweight system demands vs more robust security coverage and advanced feature capabilities.

A. Summary of Key Differences

Avast Advantages:

  • Broader security feature set outside antivirus scanning
  • Enhanced protection against sophisticated zero-day threats
  • More customization options for scanning and shields
  • Available as added-cost premium upgrade with further tools

MSE Advantages:

  • Leaner background resource usage
  • Simpler interface for non-expert users
  • Tight integration and optimization for Windows environments
  • Automatic updates through native Windows Update channel

B. Recommendations for User Scenarios

For most general home users:

MSE provides a streamlined solution meeting essential security requirements without advanced configuration needs or system slow downs. Its intuitive interface also suits those less technically savvy.

For power users and specialized enterprise environments:

Avast’s richer feature set provides more versatile protection for IT experts. Custom controls better adapt to specific system risks and requirements as well. The range of extra tools also build a more complete endpoint security solution in one package.

C. Future Outlook

Both platforms continue evolving their threat detection engines using the latest technologies like artificial intelligence, data science and machine learning to stay on the cutting edge against information security attacks.

Microsoft is integrating more of MSE’s core functions directly into Windows OS machinery for tighter under-the-hood security defenses. This enhances protection while maintaining their light footprint.

Avast continues expanding its security network leveraging threat intelligence and behavioral data across its massive global user base of over 435 million devices to respond faster to emergent malware strains and hacking techniques. It also continues integrating new protection modules like VPNs, identity protection, password managers and more into its premium all-in-one suites.

The information security landscape grows more sophisticated by the day. But both Avast Antivirus and Microsoft Security Essentials provide adaptable free antivirus solutions balancing robust malware detection with efficient performance for the years ahead. As cyberattacks grow more advanced, it’s essential all users have a modern endpoint security solution in place matching their individual risk tolerance, technical needs and budget.