Why some are OK as second anti-malware and others not?

Immunet, Prevx, MBAM and SAS are happy to sit alongside a mainstream A-V.

Why?

I can understand 2 programmes pinging each other when checking for malware and therefore it isn't a good idea to run two A-V.

What's so different about the aforementioned programmes that they are happy to co-exist with an A-V?

Is it a technology difference (2 are cloud-based, 2 are resident) or a marketing position not to encourage a second anti-malware programme?

Ian

 

May be because these have on-execution protection rather than on-access. But as far I know MBAM has on-access protection.

 

it is the way they hook into the system in order to protect it. 2 AV will work in similar manner and hence clash while something like the other 4 you mentioned are designed differently (but they are not AV as such although Prevx is becoming more of a one and only Immunet free can be run in tandem because the Pro version is an AV that will clash with other)