Let me be clear. I am not the guy who started this post. I didn't give up my private key or either key. I am the victim of same thief who also stole from the guy who post. I downloaded a file and installed block and chain folders and the pivx left immediately my wallet. Ten thousand pivx. I could put my conversation with pivx support team, they didn't want to provide me the email of the thief or no information whatsoever. I do not want to make FUD on pivx but this is the reality. The pivx is all collected in one account and the thief is staking. They told me to come with a court order to give me the thief address. They also asked if i am not the thief myself.
Were you getting advice from a user on Slack at the time it happened? Seems like the OP traced his loss back to a Slack user who pretended to be a developer and then stole his coins.
Here is one methodology I know is being used: The thief directs you to download a file for installation; it's the wallet installation package, but this one is infected with a trojan virus. You start up the wallet, transfer your coins to the new address, then the thief takes them. That's all I know. One could guess that the trojan broadcasts a signal that allows the thief to access your remote server, grab your dat, or whatever. I'm only guessing....I don't know how the actual crime is pulled off. But I can tell you there's a infected installer, I can assure you. Easy to duplicate this for many coins, and pull off the heist across all these slack boards.