Google is Testing a Reporting System for Security Issue
https://twitter.comWhen you want to urgently flag bugs or other issues you can use the new “Report a Security Issue” button which you can see on the English language Search Console’s help pages.
I was not able to see the button on those help pages, it’s likely because this reporting tool is only for those who have sites flagged with a security issue in Search Console & the issue can’t be solved using our existing support mechanisms.