we have almost no information about BRAIN, but i think that we cant compare both products even they are intended to achieve one thing, they work completely different.
BitDefender Brain it is a joke. If someone can please show me that works, some BitDefender fans maybe ?
Symantec Insight works and you can see it in action.
all we know that bitdefender uses a "special" terminology to name a specific malware.. almost always we see... trojan.generic***, gen.variantkazy****, etc.. so there is no way to determinate if a threat is detected by their cloud or no. (under a given name)
I dont know about Bitdefender Brain (good marketing), but Kaspersky KSN seems to be really good, just take a look at "UDS DangerousObject.Multi.Generic" detections here in Malware Hub.
With KSN you can check file reputation at real time too:
i have seen many times that KIS flag in KSN a PUP or malware as a safe file and also some times a malware that is detected by signatures is marked as unknown in KSN, even worst some PUP are marked as trusted :/. Cloud may fail, if you are able to compare a file agains 1 AV cloud it doesnt mean it is good or no...
well for me... KSN and BRAIN are the same thing i mean in other words... is what we call "cloud" cloud is intended to go beyond signatures by blocking malware in real time so, essencially both products may be able to do that... but they work different for example:
while an unknown file is blocked by the cloud by a generic name (KSN) , bitdefender uses AVC to watch a program and if it start behaving in a weird way bitdefender connect to the cloud to see if there is an specific rule for that threat if not... AVC will automatically block or allow the file (by following a threshold) then the file and all of these stuff will be sent to the labs for proper analysis, the rules that user take etc.. will be recorded, so if other user finds the same file it will be blocked by the community just like emsi....
this may not be the real scenario what i want to point is that KIS gives a name for the threat while bitdefender uses another technique... of course every cloud have to work in a different way.. but in simple terms they work in the same manner... cloud services are just that "in the cloud" which means that the user has nothing to do to get extra protection, just only an internet connection