Windows 10 Defender April 2018 Update

Internet security is an increasing real life issue for all Windows based computer users. Gone are the early days when people only had to worry about ‘viruses’. Today, ransomware, spyware, and various new forms of malicious software are considered (sadly) an everyday [normal scenario] threat to all Windows users.

With the latest Windows 10 version April 1803 update, Defender has now reached the point where I can recommend leaving it in place and using it. In fact, I see it as (very) good choice. This post will share some details and test results  that indicates what this package now offers, and some proof of the protection found in this latest release.

latest Windows 10 version April 1803 update
Windows 10 version April 2018 version 1803 update

Your firewall, system monitoring tools, parental controls, and Windows Defender itself can be found and managed in one simple interface.

Windows Defender features a firewall, antivirus and anti-malware in one. It detects malicious applications and possible threats while quietly running in the background. It can identify and block malicious websites in Internet Explorer and Edge. It scans email attachments when received through Microsoft Outlook. It also protects links accessed through Microsoft Office 365.

Windows 10 Defender does not come as ‘bloat-ware’, it works straight out of the box; there is no need for you to enable anything, set anything up, or register for anything. For most people, this is a easy choice. The alternative third-party security packages often come with bloatware (advertising) and somewhat complicated fix-it tools.

Watch this Youtube about Windows 10 Defender

There are no nag (advert) screens or ‘promotional’ pop-ups. The majority of free anti-virus packages push you to upgrade, add features, or sign up for ($$) trials – bordering on the verge of becoming malware in their own right. With Windows Defender you will not even know it’s running unless it finds a problem.

Windows Defender - Virus Detection
Windows 10 Defender – Virus Detection

The Windows 10 Defender has the following features:

  • It will catch the overwhelming majority of malware.
  • It’s distributed and updated as a part of Windows 10 itself.
  • A strong security strategy does not rely on anti-malware to catch everything.

Defender is built into Windows 10 and it not easy to turn it off manually, that would requires a registry hack or a Group Policy change. This is intentional (as designed) and comes back to Microsoft’s strong policy of attempting to make sure you always have protection.

Main Window

Microsoft Windows Defender Security Center runs on every Windows 10 computer that doesn’t have another antivirus product installed. In addition to malware protection, it manages Windows Firewall, Smart-Screen Filter, and (if enabled) the built in parental control system.

Microsoft Windows Defender Security Center Advanced scans

Microsoft Windows10 Defender Security Center Advanced scans

Firewall Settings

From the main Security Center window you can view and change settings for Windows Firewall. However, the average user should leave these settings alone.

Security Center Device performance & health

Security Center Device performance & health

Security and Privacy

Windows Defender does not ask you for an upgrade to a paid program or use (some) browser extensions that share your browsing data with third parties.

Windows Defender Firewall

Windows 10 Defender Firewall

The built-in Windows firewall runs independently, as does the Smart-Screen malicious-website-blocking feature in the Internet Explorer and Edge browsers. Attachments to emails are scanned automatically before they can do any harm, regardless of the email client software used.

Windows 10 also includes strong built-in parental controls. They’re in the Family Options section of the Security Center and this allows you to establish an online schedule for your children.

User Interface

The Windows Defender Security Center, which manages Windows Defender as well as several other Windows features, is no longer a mix of old and new software. Everything has a common and open look to it, and many of the features can be turned on and off.

Windows 10 Defender - Security at a glance

Windows 10 Defender – Security at a glance

How Does Windows Defender Compare?

The analysis report below is based on Windows Defender 4.8 and tests carried out in April 2018.

AV Test helps users make educated decisions about what antivirus they should use. They rank each antivirus on three factors using a scale from 0 to 6, where 6 is the best.

The three elements they test for are Protection, Performance, and Usability.

So how did Windows Defender fare?

The following tests required that various products had to demonstrate their capabilities using all components and protection layers.

For Windows Defender some very reasonable test results.

AV Test Report Windows 10: June 2018

AV Test Report for Windows 10: June 2018

As of June 2018, Windows Defender gave a score of 6, 5.5, and 6 across the three categories (see above). Technically that gives it the same “Protection” and “Performance” ratings as the well rated anti-virus suites like Avast and AVG.

According to the above AV Test results, Windows 10 Defender currently offers 100% protection against zero-day malware attacks, with a performance impact of 4%.

AV Test Product Review and Certification Report - May - June 2018

AV Test Product Review and Certification Report: May-June 2018

AV Test Defender Protection

AV Test Windows 10 Defender Protection

AV Test Windows Defender - Performance

AV Test Windows Defender Performance

Windows Defender is showing it now capable of acceptable good protection, where as several years ago it was classed as a ‘poor’ protection solution.

Improvement with time

The historical data on both AV Test and AV Comparatives shows a marked improvement in Windows Defender’s performance since 2015.

AV Test Windows 10 - October 2015

AV Test Report for Windows 10: October 2015

Now back in October 2015, Windows Defender received a low rating for Protection 3.5, 4.5 and 6, amounting to just 95% protection against 0-day malware attacks. The industry average at that time was 97.2%, so Windows Defender was low in protection ratings. Not anymore.

The new Windows Defender Application Guard (Windows 10 Pro and Enterprise only)

Another great new feature of the 1803 update is Windows Defender Application Guard has been packaged. This option brings an important security features into Windows 10.

Windows 10 - Defender Application Guard

Windows 10 Defender Application Guard

By using Hyper-Virtualization, Defender Application Guard opens a web page in a secure and totally isolated session that does not expose the core system to be compromised by risky software from the current browser page content.

In earlier releases, this feature required Windows 10 Enterprise edition. Beginning with this update, the package is now available on Windows 10 Pro and you can enable it by checking a box in the Windows Features list. See this link for more details and what you can do to use it.

After enabling the Defender Application Guard, you will be presented with a New Application Guard Window option in the Microsoft Edge browser. This option shows in the Settings and More menu (Alt+X), just above the New InPrivate Window option.

Windows 10 - Edge Browser new Defender Application Guard

Windows 10 – Edge Browser new Defender Application Guard

The Windows 10 Defender Verdict: A Sturdy Defense

Only a few years ago you would have installed a third-party AV software. However in 2018, Windows Defender is now proving to be a viable antivirus and security package.

Windows 10 Defender Status

Windows 10 Defender Status

If you really wanted to err on the side of caution, there would be no harm in adding an extra layer of protection over Windows Defender, however, using only Windows Defender is not a risk or weakness anymore.


Windows Defender can offer essential protection for your machine. This fully-integrated security application makes it one of the most low-maintenance and user-friendly software protection packages available.

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