We all know that G Data uses both Bitdefender and Avast engine. But in their GUI says about engine A & B. According to them Engine A is better than Engine B.
Engine A: Detection (Very Good), Performance (Very Good)
Engine B: Detection (Good), Performance (Optimum)
See the image
So, I tried to sort out the identity of the engines (A & B)
Firstly let me say that G Data allows user to use either both engines/engine A/engine B as their Resident Scanner/On-Demand Scanner.
I downloaded a virus malware.zip (password protected) in the computer.
Extracted it after providing the password, G Data quarantines it. At that time it was using engine A as their Resident Scanner. The threat was detected as Win32.Generic.493869 .
Next time I used engine B as the resident scanner. Then the threat was detected as Win32:Rontokbr-I2 .
Lastly I used both engines as their resident scanner, the threat was detected as Win32.Generic.493869 .
So, it became clear that Engine A is G Data's primary engine & if it fails to detect anything engine B comes into play.
Now, to ensure the identity of the engines I uploaded the file in Virustotal and found that Avast detects that as Win32:Rontokbr-I2 and Bitdefender as Win32.Generic.493869 .
So, Bitdefender is their Engine A & Avast is Engine B.
http://www.virustotal.com/analisis/70d98b736c32160617e8e272c2f5b2c10c72789fe40e27ec16f94ffa09394cd7-1269026931What's then... I decided to share it with you. I was not surprised that G Data uses Bitdefender as their primary engine. It's upto them obviously. But is it good to distinguish the two engines as Very Good/Good or Very Good/Optimum ?