Sometimes your site might have backlinks you did not know about at all...backlinks coming from untruthful sites, broken, sites, spammy pages. We call them "bad backlinks". Unlike valuable ones, it can negatively affect your SEO. Luckily, there is a fix - Disavow file. The whole process is quite straightforward. Backlinks profile evaluation -> manual checks of the backlinks from domains with low authority -> disavow list creation -> disavow file upload to Google Search Console.