Microsoft defends Security Essentials after "failing" AV-Test certification

On Wednesday, AV-Test failed Microsoft Security Essentials in its antivirus certification program, claiming that Microsoft's program only protected against 78 percent of "day 0" malware attacks. It also claimed that it detected 90 percent of the malware that has come up in the last few months, when the industry average is 97 percent.

Microsoft has since give their own statement on AV-Test's findings. As far as the "day 0" statistics, Microsoft says, "We know from telemetry from hundreds of millions of systems around the world that 99.997 percent of our customers hit with any 0-day did not encounter the malware samples tested in this test." In addition, Microsoft said that 94 percent of the malware that AV-Test says Microsoft Security Essentials missed "were never encountered by any of our customers.'

Microsoft says that it is working to cut down "our 0.0033 percent margin to zero." It added:

In December 2012, we processed 20 million new potentially malicious files, and, using telemetry and customer impact to prioritize those files, added protection that blocked 4 million different malicious files on nearly 3 million computers. Those 4 million files could have been customer-impacting if we had not prioritized them appropriately.

Source: Microsoft Malware Protection Center blog | Image via Microsoft

Report a problem with article
Previous Story

Kim Dotcom: Mega to offer 50 GB of cloud-based file storage for free

Next Story

Microsoft releases demo of its proposed web audio-video chat standard

64 Comments

View more comments

I use MSE and I install it religiously on client computers after they've had an malware attack and been using some other AV product and since doing so I've not had any of them complain about Viri/Malware infections... I also take the time to explain to them that not everything you can click on on the net is safe don't just blindly click "yes" to everything slow down and take a minute to read what it is they're asking you to install if you don't like the looks of it then click no or cancel, if it's in an email from someone you know but isn't something you'd expect them to be sending you then delete it chances are good that it's an Virus/trojan or malware

AV-Test's chosen "samples" are a bogus representation of malware, at best. As always.
Security Essentials is decent, more so than any other free antivirus product except avast! which is the best.

DoomsDayMayan said,
So the other companies that passed can pass a bogus test and Microsoft can't. That is what you are telling me?

No, that's not what I'm telling you. Work those brain cells a little.

I love Webroot! It's impact on system is 0. Zero CPU usage and only 3MB of RAM. It doesn't even slow down the startup unlike Norton monster

I'm sure MSE is good and all that but I go by what the reviews say every year, this year I'll be going with bitfender, next year it could be MSE who knows but I would rather trust the reviews than to go by blind devotion to a company because I like their operating system.

I have used MSE since I can remember. The best part of MSE is that is practically invisible, not a resource impact and haven't had a virus ever.

While debatable as which is the best, I find MSE to be the least obtrusive, I've had to remove software such as Norton AV, from lots of ppl's computers, because it was bogging down their system, or other ones because they were fed up with Nagware, begging you to register or buy their 'pro' versions.

I repaired a number of machines for people that had Norton, AVG, McAfee, etc on them and they brought them to me with those fake antivirus programs. After cleaning the machine of that crap I installed Microsoft Security Essentials on all of them. I run MSE on all my machines (6).

I also have been using MSE for the last couple of years. Together with some common sense it has been pretty good for me

I've spent a lot of money in the past for anti virus software. I've tried a few free options too. I 've been using Microsoft's Security essentials for about the past 3 years now and I like it. MSE and common sense goes a long way. I've never had a virus until now. And it's light on resources.
Gone are the days of the badass doorman who throws your friends out and you can't fire him 'cos he'll burn your business down if you try .

I've been using MSE for a long time, but recently I switched to Panda Cloud. There were some weird situations when MSE was using 99% of my CPU scanning like crazy (for example when I was extracting an archive, or installing something - > those were slowed down a LOT because of MSE) and we have Panda at work, so I decided to give it a shot. Still, I love MSE and I would recommend it to anyone, it will get much better in time. Don't forget that this AV is quite young, compared to others, so there is a lot of room for improvement.

I don't trust MSE. It's not just this test it has done badly on - look at any popular independent test and you will see a similar result.

Can't say i'm a big fan of MSE since i experienced the problem where it would slow down the PC when scanning a large folder.

I've got it installed on the spare media streaming PC but for my computer and laptop i use everyday i've installed Avast just because it's got a good balance of being light, scanning quickly and having good detection rates.

I don't see why people just don't run MSE and another AV like Avast on the same machine, they are both low impact and you don't really notice either of them being present with the right settings

MSE is before in NOT slowing down my computer. Seems every other anti-virus I use slows it down no matter what computer I use.

moloko said,
MSE is before in NOT slowing down my computer. Seems every other anti-virus I use slows it down no matter what computer I use.

I agree MSE doesn't slow down! The same for Webroot! Webroot and MSE are the most system friendly AV Softwares

I don't get this, haven't they been having trouble with tests for ages? I decided to delete MSE a while ago because of this. Since then I've been using Unthreat Antivirus and I'm much happier.

Commenting is disabled on this article.