Yet Another Cleaner (YAC) – Accused of Stealing Malwarebytes’ Detection Database

As the name suggests, Yet Another Cleaner (also known as YAC) is one of those universal PC cleaner/maintenance utilities that offers a variety of different of components. In YAC’s case, included among these components is a malware scanner and removal tool.

Some of you may remember the furor some time back when the IObit software company was accused of stealing intellectual property from Malwarebytes, an accusation that, to the best of my knowledge has never been repudiated. Now, it would seem, a similar situation has occurred again, only this time involving the developers of the YAC software.

mbam blog

Malwarebytes has published an article detailing all the steps taken to prove beyond doubt that YAC is using Malwarebytes’ detection database in its malware scanner/removal tool. The manner in which Malwarebytes presents the facts is certainly compelling.

Yet Another Cleaner – Users Beware

I have heard of YAC before but never actually checked it out. However, on reading the Malwarebytes article I decided to delve a little deeper into the software’s reputation.

The first thing I did was access YAC’s home page only to be confronted with a warning from WOT. The site is rated Red (high risk) by the WOT site advisory service and a visit to the site details page revealed the following user comments:

  • In reallity: yac installs unwanted programs that are hard to remove and takes over control over you computer. After a while advertisement shows up, and the search engine of your browser gets locked.
  • This is the same website as They created and new website which redirects users from which was previously blocked by hpHosts for distributing rogue security products.
  • This site hosts rogue security software! Avoid!

And so on, and so on.

Next, I downloaded the YAC installer and scanned same through Virus Total. Six antivirus engines – including Eset, Avira, DrWeb, Fortinet, Trend Micro and, of course, Malwarebytes – all flagged the software.

vt scan results

Finally, I visited CNET to check out the user reviews there. The editorial review posted by a staffer is unsurprisingly favorable, further emphasizing the fact that this major download site will list anything, regardless of user safety. However, the user reviews tell a completely different story.

yac user reviews-summary-cnet

And so on, and so on.

The evidence is overall pretty damning… draw your own conclusions.


6 thoughts on “Yet Another Cleaner (YAC) – Accused of Stealing Malwarebytes’ Detection Database”

  1. Thanks for the heads up Jim. The up side is they are helping to promote Malwarebytes, Mindblower!

  2. Sadly you’ve got to be careful when it comes to security products there are so many fakes and suspicious ones. Someone I knew once claimed the smaller AV’s where the best as they were unknown and more likely to not get targeted but this isn’t true. It depends on a lot of things, importantly the technology behind it. That’s why I use malwarebytes pro alongside eset smart security two great programs with great history

  3. Thanks Jim, will have to look up Malwarebytes Pro. I have Eset and have not had any problems, so far.

  4. You know a product is good if someone steals it. Kind of a left handed compliment but a compliment none the less.

  5. I use Malwarebytes Pro which I’m happy with and glad it is still on the good list of apps. I also use PrivaZer to clean my computer which I hope is also still on the good app list. I know you’ve mentioned PrivaZer in the past and I assume it’s still one of the best cleaners out there but I always like to hear your comments.

    1. I also, use Malwarebytes Pro and PrivaZer! Love both of those programs. As far as I know, both programs are clean, but, only when you download them, from their own websites.

      The biggest problem today is, that there are way too many download websites now, that add PUPs and Malware!!! being one of them!!! I went to download a program, from and got Conduit and Sweet Packs, as a thank you. It took me, over a week to get rid of both of those “take over” your browser and heaven only knows, what else.

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