Category Archives: Antivirus

An Overview of Free Antivirus Programs – Part III – Comodo Antivirus 2.0 Beta

This is the third installment in our series on free antivirus programs. Be sure to also see:

Up for examination today is Comodo Antivirus. Review version: 2.0 Beta (build

Product link: Comodo Antivirus

Installation – No registration is required, though you may optionally submit your e-mail address as an ID. Even if you do not provide an e-mail address, the program is still “activated” for life. A reboot is required after installation.

Interface – I don’t think the interface will win many design awards, but it doesn’t take long to figure it out. Here is the main screen:


As you can see, the buttons across the top control most of the navigation, while you can easily enable or disable elements of the program from the main window. Here is what scanning looks like:


Updating – Manual updates are easily handled by clicking the “Update Now” button on the main window. Comodo also comes with a seamless “automatic” update feature that will automatically download and install updates as needed, making it a good “install and forget” program.

Footprint and Scanning – Thankfully, Comodo is light on system resources, and on my system it feels no heavier than AVG. I did not notice any “hangs” or slowdowns in opening files or applications.

Comodo offers a number of scanning options, ranging from a complete scan to isolating specific folders/files. I applaud the inclusion of a memory scan as well.

Upon running a complete scan, imagine my surprise when Comodo reported that the scan only took about 6 minutes on my system (over 400 GB of files)! Six minutes? Surely there must be a mistake here.

There is. An isolated scan of just one of my hard disks takes nearly 7 minutes. How can the “full” scan take less time than that? Somehow, Comodo’s “full system” scan does not even come close to scanning the full system. I’m still scratching my head about it.

That said, Comodo’s scanning speed is still very impressive. Even if I combine the time it takes to scan each of my hard disks, Comodo far outpaces AVG and PC Tools by a long shot. Admittedly, Comodo did run an initial scan just after installation to help set up its Host Intrusion Prevention System (HIPS), so perhaps there’s some aggressive caching going on. Or maybe it’s just a bug. 🙂

Types of Protection – Like the other two programs reviewed thus far, Comodo features an on-access scanner, an on-demand scanner, and an e-mail scanner for users of POP3 programs such as Thunderbird and Outlook. Quick scanning of individual files is integrated though the”right-click” explorer menu.

If you use the HIPS Application Control feature, Comodo will require some training in which applications are safe to use. In the picture below, I have just launched my Finale music software.


Just like setting up a software firewall, Comodo will “learn” which programs are authorized and never bother you again about them. Though initial setup can be tedious, HIPS Application Control can come in handy to stop a rogue virus or trojan from even executing.

EICAR TestHere is a link where you can download a harmless test file that should be detected as malicious by antivirus programs. As I’ve mentioned before, it is NOT a real virus. In order to test the effectiveness of a program, I download the EICAR test file to my desktop and start counting to see how long it takes the antivirus program to find it. Sooner is always better than later. Let’s see how Comodo fares.

I downloaded the file and waited… and waited… and waited. Nothing happened. Uh-oh.

Bad news. Comodo does NOT automatically detect the test virus, even though the on-access scanner is active. Clicking the file does not trigger the scanner either. In fact, only by right-clicking the test virus and choosing to manually scan it did Comodo finally provide an alert.


Fortunately, the Comodo “Repair Wizard” was able to successfully delete the file, but it is still disturbing that the on-access scanner did not detect the test virus at all.

Update: Comodo’s on-access scanner finally found another copy of the EICAR virus that I manually deleted… 12 hours after I first deleted it! Maybe the on-access scanner was just on an extended coffee break.


Final Thoughts – I really want to like Comodo, and there are a number of things that the program does well. Not only is scanning blazing fast, Comodo is the first program that I have reviewed so far that does not have any nag screens or banners urging me to upgrade to a paid version.

Still, this is Beta software, and there are a few quirks, such as the “not-so-full” scan issue. A more minor issue is that the Windows Security Center does not recognize Comodo as a valid antivirus program, and by default will leave an annoying icon in the tray asking you to install a valid program. This is easily remedied by going to the Security Center and checking the box next to “I have an antivirus program that I’ll monitor myself.” Still, I hope this will be addressed later.

Of course, there is also the glaring issue of detection rates. Given how Comodo fails to quickly find the EICAR test virus, I worry about its overall effectiveness in detecting real viruses. As it stands now, I am not comfortable using this version of Comodo as my primary line of defense against viruses.

If these issues are addressed, Comodo has the potential to become a leading figure in the free antivirus software arena. A glance through their forums shows mention that a beta of a completely-rewritten version 3 should be on the way soon. I look forward to testing it.

Stay tuned for more entries in this series.

Subscribed to my feed yet? It’s free!

An Overview of Free Antivirus Programs – Part II – PC Tools AntiVirus Free Edition

This is the second installment in our series on free antivirus programs. Be sure to also see Part I (AVG Free Edition).

Next on the list is the free edition of PC Tools AntiVirus. Review version:

Product Link: PC Tools Free Edition

Installation – No registration required, which is nice. Reboot required after installation.

Interface – PC Tools sports a slick and shiny interface. More importantly, it’s easy to navigate and understand. Here is the main program:


And here is what it looks like while scanning:


Updating – Manually updating the program is easy – just use the “Smart Update” button on the main program window.

Concerning automatic updates, there are two options available.

  1. Set a frequency in which to search for updates (ranging from 30 minutes to 24 hours).
  2. Set a scheduled time in which to update (can be daily, weekly, or monthly).


Of course, you may use both options. However, the main downfall is that the first option will NOT automatically install any updates. Instead, it will display a prompt from the taskbar notifying you that an update is available. In my opinion, this feature is almost useless because it requires manual intervention. I would much rather see it go ahead and install the updates, preferably without notifying me at all!

Fortunately, the second option seems to automatically install updates, though your computer must be turned on at the time you specify. All-in-all, the manual updating procedure is stronger than the automatic with this program.

Footprint and Scanning – On my system, PC Tools AntiVirus took over 3 hours to run a “complete” scan (over 400 GB of files). By comparison, AVG only took just over an hour to run. Make no mistake, PC Tools AntiVirus is slow at scanning, though overall effectiveness is admittedly more important than sheer speed. Still, this is an area that I would like to see improved.

Concerning system resources, PC Tools AntiVirus definitely “feels” heavier than AVG, though not as heavy as in my experiences with some versions of McAfee and Norton. It’s subjective, but programs and files on my system take a little longer to open with PC Tools installed.

Types of Protection – PC Tools AntiVirus offers both real-time protection and on-demand scanning. I’m pleased to see that a plug-in for e-mail protection is also available (separate install – look near the bottom of the product page), which is handy for you POP3 mail users.

EICAR TestHere is a link where you can download a harmless test file that should be detected as malicious by antivirus programs. It is NOT a real virus. In order to test the effectiveness of a program, I download the EICAR test file to my desktop and start counting to see how long it takes the antivirus program to find it.


I was pleased that PC Tools did not even allow the file to download to my desktop. As soon at the EICAR file went into my browser’s cache, PC Tools snagged it and sounded the alarm. Nice! This is even faster than AVG’s detection and is one of PC Tool’s stronger points.

Final Thoughts – PC Tools AntiVirus impresses immediately with its shiny, intuitive interface. However, beauty is only skin-deep, and this free antivirus program fails to impress in other areas, such as the needlessly-complicated automatic updates and the tremendously-slow scanning speed.

Other little tasks show a lack of foresight as well. For instance, I appreciate that targeted scanning is integrated into the “right-click” explorer menu, but once scanning is finished, clicking “Close” leaves me staring at the main program window instead of sending it back to the taskbar. In a targeted scan, why would I want to keep the main program open when the scan of my file(s) is finished? It just adds an extra step.

So then, would I recommend the free version of PC Tools AntiVirus? Yes, but not as highly as other free antivirus programs, such as AVG. In a way, it’s a shame that I don’t have a system chock fully of viruses that I could use to evaluate detection rates, because I suspect that PC Tools is quite good at it. If you are willing to sacrifice a few system resources and don’t mind a little manual intervention for updates, PC Tools AntiVirus should reward you with good looks and virus detection.

Stay tuned for further entries in this series.

Enjoying this series? No? Subscribe to my feed anyway. It’s free!

An Overview of Free Antivirus Programs – Part I – AVG Free Edition

Henceforth begins a multi-part series in which I plan to install and test every different free antivirus program that I can find. Since 2002, I have switched between a handful of various free antivirus programs, but there are several available now that I have not tested.

Therefore, I have decided to document this process here in order to provide an overview of the currently-available free antivirus programs. I have currently compiled a list of seven different programs to try, but there may be more if I find others along the way. Here are my criteria:

  • The program must be “install-able” – I will not cover any online scans.
  • The program must be FREE. Upgrade paths are acceptable, but no “trialware” allowed.
  • The program must not contain any spyware. If any spyware is detected, that program’s creator will receive a virtual kick in the junk from me personally.

In the coming weeks I will post reviews on each of these programs, as I plan to “live” with each of them for a few days in order to write more “informed” reviews.
Let us begin with the venerable AVG Free Edition. Review version: 7.5.503

Product Link – AVG Free

I have used AVG Free Edition off-and-on for several years now. And while it has not always scored the highest in detection rates, it is simple to install, simple to use, and is very light on system resources.

Installation – No registration currently required. Just download and install. Piece of cake.

Interface – AVG may not be the best looking girl at the ball, but she’ll turn a head or two. Though the looks are spartan, the interface is easy to navigate. Here is the Control Center.


And here is the Test Center.


Updating – AVG offers automatic updates, making it an effective set-and-forget piece of software. You can also easily make updates silent.

Footprint and Scanning – AVG is remarkably light on system resources. In 2003 I replaced Norton with AVG and was amazed at how much faster my computer booted and ran. It was like a breath of fresh air.

By default, AVG will try to schedule a complete system scan every 24 hours, though you may easily opt out. When doing a complete scan, I appreciate the option to automatically shut down the computer when the scan is complete.

It took AVG approximately 1 hour and 15 minutes to finish a complete scan of my system, which includes about 400 gigabytes worth of files. Of course, your mileage will vary.

Types of Protection – AVG offers real-time protection, on-demand scanning, and an e-mail scanner. It does not scan for spyware or offer firewall protection. To some this may be a downfall, but it is a feature in my opinion. I prefer programs that “do one thing, and do it well.” The included e-mail scanner is handy for people who rely on POP3 programs such as Outlook and Thunderbird.

EICAR TestHere is a link where you can download a harmless test file that should be detected as malicious by antivirus programs. It is NOT a real virus. In order to test the effectiveness of a program, I download the EICAR test file to my desktop and start counting to see how long it takes the antivirus program to find it.


It only took AVG a couple seconds to find it and provide options on what to do with it. “Healing” deleted the file.

Final Thoughts – AVG is one of the most popular antivirus software programs for a reason. Yes, there are probably more effective commercial programs available, but most of them will rob you of both your money and your system resources. I have no problem recommending AVG to anyone who wants a free antivirus program, though I suggest that you install a separate anti-spyware utility.

Stay tuned for further entries in this series.

Subscribed to my feed yet? Why wait? It’s free!

Make AVG Antivirus Updates Silent

I’m ashamed that I did not notice this sooner. In my earlier post on how to make Avira AntiVir more usable, I described a way to make updates invisible.

Of course, this is also possible with AVG Free Edition, and the process is much easier. I’m documenting it here to help myself remember it in the future.

By default, AVG Antivirus will spawn a new window whenever it updates, thereby interrupting your current task (including breaking any full-screen applications). To quickly and easily prevent this from happening, launch the AVG Control Center and select the Update Manager.


Next, click Properties, and be sure to un-check the box next to “Display information about update process.”


Your AVG updates should now be completely silent. Again, I am embarrassed that I did not notice this sooner.

Make Avira AntiVir (Free Edition) More Usable

Update: there is also a more recent version of this article here.

logo_antivir.gifFor years now I have used the free edition of AVG Antivirus, but recently I switched to Avira AntiVir (free edition). I still like AVG, but a number of reports (such as this one) show that it suffers in comparison to AntiVir. While my system has not had a virus in a long time, I decided to give AntiVir a whirl.

I like it, for the most part. However, there are a couple of easy hacks improvements that one can make.

Disable the Annoying Popup

The free edition of Avira AntiVir comes with an nagging popup window that rears its ugly head after each update (usually) every day, begging you to consider upgrading to the premium version. The popup is easy to dismiss, but annoying nonetheless. I understand that Avira needs to make money, but every single day is excessive.

Anyway, here is how to disable it:

Windows XP Pro:

  1. Start – Run – Type “secpol.msc”
  2. Click on Software Restriction Policy – go to Action (at the top) – Create New Restriction Policies
  3. Right-click on Additional Rules (on the right) – Choose New Path Rule


4. Now click Browse and find the “avnotify.exe” file (C:\Program File\AntiVir PersonalEdition Classic\)

5. Make sure the security level is set to “Disallowed” and click OK.

Done. What you have done is disallowed the execution of “avnotify.exe”, which should suppress the popup window.

Windows XP Home (and Media Center)

  1. Boot into Safe Mode (repeatedly press F8 after boot)
  2. Login under the Administrator account
  3. Navigate to C:\Program File\AntiVir PersonalEdition Classic\avnotify.exe
  4. Right-click “avnotify” – Go to PropertiesSecurityAdvanced
  5. Look under the Permissions folder for a listing of all the system users. Do the following for all the users:
  6. Edit – Traverse Folder / Execute File – Deny – Click OK
  7. Reboot (into Normal mode) when finished

I don’t have Windows Vista, so I can’t comment on that. If some willing user wants to figure it out and comment below, please feel free.

Make Updates Invisible

By default, when AntiVir updates itself, it will spawn a new (minimized) window that can interrupt any full screen application that you are using, such as a movie or a video game. To change this, set the Display Mode to Invisible.

  1. Launch AntiVir and click the Scheduler tab.
  2. Right-click on Daily Update and choose Edit job
  3. Click Next until you reach the Display Mode screen
  4. Choose Invisible from the drop-down list (see screenshot)

There. Now AntiVir will no longer interrupt full-screen applications.

If you enjoyed this article, please subscribe for future updates.