What should I do if I have “Possible Security Vulnerability” or other warning report from SiteLock or other security plugin?

In case if you use some security plugin like “SiteLock” or similar one and get some warning reports, especially if these reports contain following text:

NB! Note that this script is experimental and may be prone to false positives.

please before you ask a question to our team about this issue, contact with support team of your security plugin and confirm if this report is real and not “false positive“.