Some of the main features of these algorithm updates include:

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Objective: The update aimed to eliminate backlinks from low-quality websites, commonly used for phishing and stealing personal data.
Global impact: This affected both web and image searches worldwide, penalizing sites with dishonest links and spam content.
Importance of security: Google recommended site operators review their site security to protect against hacked spam and ensure compliance with its Webmaster Guidelines.
Implications for SEO
Regarding SEO, it’s worth highlighting that this Google poland mobile database Spam Update brought some innovations in the following areas:

Backlinks: The quality of backlinks became more crucial, with Google identifying and removing dishonest links that violated its guidelines.
Content quality: Maintaining high-quality content and following Google’s E-A-T (Expertise, Authoritativeness, Trustworthiness) guidelines became fundamental for SEO practices and webmasters to ensure the health and growth of each website.
Technical analysis: Finally, but never less relevant, it’s necessary to analyze and evaluate backlinks and internal links, as this practice became essential for improving SEO and user experience.
Google Spam Update June 2021 (Part 1)
Finally, or rather initially, as this was the first part, we have the Google Spam Update that took place on June 23, 2021.

This was the first part of a two-phase update, with the second phase scheduled for June 28, continuing to modify some aspects even until early July.