If it provides couldmining services and barely anybody even remotely heard of them - it generally means they are a ponzi and a scam. And a virus, if they offer to download anything like hashflare or how that retarded scam was called...

hashflare was really funny btw, they kinda made a thread, got beaten to ashes by scam accusation within a day, then close it, next day reopen another one with the same info and so on... scam special tactics