Links from questionable sources are treated as untrusted by Google and other search engines and pose the risk of a significant reduction in rank.  Simply use any of the advanced filters to check your backlink profile. For example, you may want to find backlinks with a low relevance and low influence score, or backlinks from countries you don’t do business in, or links with irrelevant anchor text.
Link data can also be a valuable tool for identifying bloggers and writers to reach out to when promoting content during campaigns.  Managing the links to your website is still one of the biggest factors in improving visibility, and you can easily identify influential, relevant and authoritative sources, discover who’s linking to your competitors, and see who in your industry has been publishing the content that attracts the most backlinks. This information can be used to build valuable new links, ultimately driving more traffic to your own sites.