Do people at Google review your spam backlinks manually?
I always wonder, do the people that work at Google count and review your backlinks manually or does a special algorithm and software does it automatically? What if you build a bunch of spammy backlinks? How can a software be sure and make a difference?
John Mueller from Google answered this question and apparently all your website's backlinks that are marked as spammed or suspended to be spam and reviewed MANUALLY by Google employees.
You can submit your suspended spam reports here: https://support.google.com/webmasters/answer/93713?hl=en
And you can report suspected paid links here: https://support.google.com/webmasters/answer/93713?hl=en