No unknown emails or downloads. I'm very aware of malware and can spot a dodgy download easily. Also using up to date eset smart security and malwarebyes.
You seem to be knowledgeable but it is seem you are using windows, that OS is very insecure, you should use Linux in any of its different flavors, I know that at first it can be a pain to get used to but at the end you are going to like it even more thanks to the security it brings to you, because 10000 PIVX is a lot of money.