"Google Takes Action Against Spammy Link Networks and Enhances Search Console Reporting"
Google's John Mueller warns website owners to close any vulnerabilities on their sites, as link spammers may share these vulnerabilities with their networks. Mueller advises 404ing or 410ing pages that receive spammy links to neutralize their effect, even though Google mostly ignores such links. He emphasizes the importance of making websites for real users, not spammers, and suggests increasing the quality threshold for new users to prevent low-effort link-builders from indexing their pages.