How do I get Polo to reveal the info to me?
if your API keys were compromised, how do you know the hack is tied to other "accounts" at poloniex? how do you know they are aware of the hacker's account or identity? they may have little more than the IP address that executed the API calls.
without a police report and case number, poloniex can't really assert that a crime occurred. they also can't give out suspects' personal information; that has to be done through police. the suspect (if one exists) hasn't been convicted of a crime.
what are you trying to accomplish? it sounds like the money is already gone. do you have access to your account? doesn't polo provide activity logs with IP addresses? i can't remember, it's been so long since i used them.
Similar hacks have happened several time in polo. The way the hack work is that the hacked account make losing trade. The hacker account is on the opposite side of the trade.
https://www.reddit.com/r/CryptoMarkets/comments/6kv2p4/poloniex_account_hacked_25000_stolen/
In that case, polo doesn't have a hard time pinpointing who did it.
Another problem is one of the API belong to cryptolend. Another I stored in my file. Obviously there is a log that says which API is used. Polo doesn't tell me which one.
Poloniex are usually able to pin point who the other account is and is usually able to ban them. Usually it's too late. But KYC knows.