Google is testing a new feature that lets users request Google review of your site if it was flagged for having a security issue or appears to have been hacked. You can make a request if you feel that Google has made a mistake when identifying your site as having a security issue.
Since this is a test, the feature might not work for everybody. According to Google, this tool is only available to those who are coming from English help pages. You also need to be signed into Google Search Console as well.
Here is what it looks like:
Google provided a video on their post as well: