The real truth about AVAST Antivirus!

Do you remember that on December 06, 2012 AVAST deleted TCPIP.SYS from thousands computers?
As a result: “No network connection of my computer. “

I have never used AVAST earlier and I supposed that it was only a bug.
We released the small free tool to rescue users before AVAST updated their databases:

But, I have recently got a message from my client:

Will you remove it?
2 3

Download Removal Tool for Free

People say

Visitor post

Ticket ID: FVI-SCQQP-805: Avast Anti-virus recognized one of your program processes as a Trojan and blocked the connection:
Infection Blocked
Infection: AutoIt:Agent-KP [Trj]
Relax, your avast! just saved you from a virus.
Please explain…!

Greatis.rdb is a virus encyclopedia. It includes only virus file names. There is no executable code in that file.
I spent some time to post a false positive ticket on the Avast web site.

Two days of silence…

The answer:
Thank you for contacting AVAST Software company with your concerns.
It’s not false positive, detection is correct.
If you need further assistance, don’t hesitate to contact me again.

Miroslav Jenšík
Technical Support Engineer
AVAST Software a.s.

Link here:

I asked for information:
I would like to get the detailed report of your test.

Answer after 2 days of silence:

Contains unencrypted virus signatures, thus it will trigger avast! as it sees the signatures.
Miroslav Jenšík
Technical Support Engineer
AVAST Software a.s.

I wasted some time before I found the signature.
It was really simple and stupid.
I have never even thought  how much stupid it is.

I shared the files to confirm my discover.

This file is detected as a virus:
Of course, it is absolutely clean.
Virustotal  test (1/47):
Only one of 47! Who is this one? Of course, Avast.

Small magic, fixing the database.rdb:

VirusTotal Test of appdata.exe (0/47):

Where is the change?

Here is a signature:


That’s all! Avast detects a virus by a simple text string. It is a super stupid.
Be careful! Next time Avast deletes your important files as viruses!

I don’t know what other signatures they have.

After that, I made a short test of Avast with Sprotector Adware and, of course, Avast failed this simple test.


Addons installed, Google search is redirected.

Keep away from Avast for your safety.


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