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Windows 7: Flawed Malwarebytes security update wipes out thousands of computers

18 Apr 2013   #1

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 
Flawed Malwarebytes security update wipes out thousands of computers

Quote:
SECURITY FIRM Malwarebytes has wiped out thousands of computers around the world with a faulty security update, mistaking legitimate system files as malware code.
The security firm confessed to the mistake in a blog post on Tuesday, and assured firms that the update has since been pulled.
"It saddens me to report that at around 3PM PST yesterday, Malwarebytes released a definitions update that disabled thousands of computers worldwide," wrote Malwarebytes Marcin Kleczynski.
"Within eight minutes, the update was pulled from our servers. Immediately thereafter, users flocked to our support helpdesk and forums to ask us for a fix."
The update definition made it so Malwarebytes protection software treated essential Windows .dll and .exe files as malware, stopping them from running and thus knocking IT systems and PCs offline.
Read more at:
Flawed Malwarebytes security update wipes out thousands of computers- The Inquirer

How to fix:
**Trojan.Downloader.ED** - Malwarebytes Forum

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18 Apr 2013   #2

Windows 7 Ultimate SP1 (64 bit), Windows XP SP3, Linux Mint 16 MATE (64 bit)
 
 
Testing before release?

Quote:
The update definition made it so Malwarebytes protection software treated essential Windows .dll and .exe files as malware, stopping them from running and thus knocking IT systems and PCs offline.
Have these jokers even heard of the concept of "testing before release"?
Didn't they have any Windows PCs available?
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18 Apr 2013   #3

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

Quote   Quote: Originally Posted by lehnerus2000 View Post
Quote:
The update definition made it so Malwarebytes protection software treated essential Windows .dll and .exe files as malware, stopping them from running and thus knocking IT systems and PCs offline.
Have these jokers even heard of the concept of "testing before release"?
Didn't they have any Windows PCs available?
Yes they have to test it on winxp, vista, Windows 7, win8. Both x64 and x86 and ALL languages. Even with and without service packs. Update was online for only 8 minutes.... but it infected thousands of machines. Very strange
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18 Apr 2013   #4

Microsoft Community Contributor Award Recipient

Windows 7 Ult. x64 Windows 8.1 x64 Ubuntu 12.04 LTS Tri-Boot
 
 

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18 Apr 2013   #5

Windows 7 Pro. 64/SP-1
 
 

The good, bad and ugly.

The good was the problem was correctly quickly.

The bad is it still effect a bunch of computers and caused all kinds of hell.

The ugly; How did this update ever get past testing and inspection?
------
I do use Malwarebytes Anti Malware Professionas and missed the bad update. I update several times a day and somehow still missed the mess.
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18 Apr 2013   #6
Microsoft MVP

Win 7 Ultimate x64
 
 

Not to defend what happened but they aren't the first,

Avira Antivirus update cripples millions of Windows PCs | ZDNet

McAfee Anti-Virus Update Breaks Thousands Of PCs - HotHardware

and won't be the last security program to do such a thing.
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18 Apr 2013   #7

Windows 7 Pro. 64/SP-1
 
 

You are correct stormy13 it has happened before and I venture to say it will happen in the future.
For what ever reason I hold Malwarebytes Anti Malware to a high standard.
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18 Apr 2013   #8

Win 7 Pro SP1 64 Bit
 
 

Can anyone spell Lawsuit?
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18 Apr 2013   #9

Win 7 Pro x64 SP1, Win 7 Ult x86 SP1
 
 

I understand mistakes like this can and do happen.
This is not the first "recent" FP with MBAM definition updates.
I got hit by the FP's in February, but I've read there have been 4 FP's since December 2012.
Why was nothing done to help prevent this problem before the latest FP.
This seems to be the worst MBAM FP issue, but the previous FP problems should have alerted them to take some action to prevent this.
I've lost a lot of confidence in using MBAM real-time protection, and I have it on all 5 of my personal systems.
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18 Apr 2013   #10

Windows 7 Pro. 64/SP-1
 
 

I got hit by the first screw up and thought they would being paying more attention and not screw up again.

Maybe they got a IObit mole.
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