This question is not for me, but I try to answer it from my point of view. I use pooler cpuminer 2.3.2 for win. It is suitable for stratum. My AMD FX 8350 with 8 cores gives something like 60 - 64 Khash. Some antiviruses reported about virus, something like CPU MINER..., but others are silent. I think it's safe, but I use it on machine with no valuable data.