Poloniex views the security of our customers as our top priority so we have created a program that allows people to report security issues directly to our team.
We collect this information via our HackerOne bug bounty program. Besides being a better forum for discussing these types of issues, using HackerOne allows us to reward you for finding serious security problems.
Please report potential security vulnerabilities to us via our HackerOne bug bounty program located at https://hackerone.com/poloniex