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How to Stop Comment Spam in WordPress? (2023)

How to Stop Comment Spam in WordPress

How to Stop Comment Spam in WordPress?

WordPress, as a widely used content management system (CMS), provides a platform for website owners to engage with their audience through comment sections. However, one persistent challenge faced by WordPress site owners is the incessant flood of comment spam. Comment spam refers to unwanted and unsolicited comments that fill a website’s comment section with irrelevant or promotional content. Dealing with comment spam is not only time-consuming but also detracts from the quality of user engagement. In this paper, we will explore effective strategies and techniques to combat comment spam in WordPress, allowing site owners to maintain a clean and interactive comment section for their visitors.

To tackle comment spam, it is essential to employ a multi-faceted approach that combines manual and automated methods. Manual moderation allows site owners to review and filter out spam comments personally, ensuring that only genuine and relevant contributions are published. Simultaneously, automated solutions, such as anti-spam plugins and security measures, can significantly reduce the volume of comment spam, saving time and effort. By implementing these strategies, WordPress site owners can create a more secure and engaging environment for their visitors, fostering meaningful interactions and enhancing the overall user experience.

  1. Enable Comment Moderation:

    Enabling comment moderation is a crucial step in the battle against comment spam in WordPress. By activating this feature, site owners have the ability to review and approve comments manually before they are published on their website. This hands-on approach allows them to filter out spam comments, ensuring that only genuine and relevant contributions appear in the comment section. Comment moderation not only helps maintain the integrity of the site’s content, but it also creates a safer and more engaging environment for users to interact and share their thoughts.

    To enable comment moderation in WordPress, site owners can navigate to the “Settings” menu within the WordPress dashboard and click on “Discussion.” From there, they can select the option to approve comments manually. This simple yet effective measure gives site owners full control over the comments that are displayed, allowing them to weed out spam and maintain a high quality of discussion. By taking advantage of comment moderation, WordPress site owners can proactively combat comment spam and foster a positive user experience on their websites.

  2. Utilize Anti-Spam Plugins:

    Utilizing anti-spam plugins is a highly effective strategy for combating comment spam in WordPress. These plugins are specifically designed to identify and filter out spam comments, ensuring that only legitimate and relevant contributions make it to your website’s comment section. Popular anti-spam plugins such as Akismet, Anti-Spam Bee, and WP-SpamShield employ sophisticated algorithms and databases to analyze incoming comments and determine their spam status. These plugins compare comments against known spam patterns, IP addresses, and blacklists, effectively blocking spam comments from appearing on your site. By installing and configuring a reliable anti-spam plugin, you can significantly reduce the time and effort spent moderating comments manually, while ensuring a clean and engaging user experience for your site’s visitors.

    In addition to their spam-detection capabilities, anti-spam plugins also provide customization options to fine-tune their performance to your specific needs. You can adjust the sensitivity level of the plugin, choose whether to automatically discard spam comments or send them to the moderation queue, and even configure additional security measures such as CAPTCHA challenges. These plugins regularly update their spam databases, keeping up with emerging spamming techniques and ensuring the highest level of protection against comment spam. By utilizing anti-spam plugins, you can effectively safeguard your WordPress website’s comment section and create a more secure and enjoyable environment for both you and your site’s audience.

  3. Implement CAPTCHA and reCAPTCHA:

    Implementing CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart) and reCAPTCHA in your WordPress comment form is a highly effective strategy to combat comment spam. CAPTCHA presents users with a challenge, such as deciphering distorted characters or solving a simple math problem, that only humans can complete. By requiring users to pass this test before submitting a comment, automated spam bots are unable to bypass the system, significantly reducing spam on your website.

    ReCAPTCHA, a more advanced version of CAPTCHA, utilizes machine learning algorithms to differentiate between human users and bots. It presents users with a simpler challenge, such as checking a box or solving a straightforward puzzle, while behind the scenes, it analyzes user behavior and interaction patterns to determine their authenticity. This intelligent approach to spam prevention enhances user experience by making the process less cumbersome, as it only requires a single click or a simple task. By implementing CAPTCHA or reCAPTCHA, you can effectively deter automated spam bots, ensuring that only legitimate human users can interact with and contribute to your WordPress comment section.

  4. Disable HTML in Comments:

    Disabling HTML in comments is an essential measure to prevent comment spam in WordPress. Comment spammers often exploit the ability to include HTML tags and links in their comments, using them to embed malicious links or promote unrelated content. By disabling HTML in comments, website owners can effectively block these spam attempts and maintain a cleaner comment section.

    WordPress provides a straightforward option to disable HTML in comments. Within the WordPress dashboard, under the “Settings” menu, navigate to “Discussion.” There, you can uncheck the option that allows comment authors to use HTML tags. This simple action ensures that any comments containing HTML code are automatically filtered out, significantly reducing the chances of comment spam. By disabling HTML in comments, site owners can create a safer and more trustworthy environment for user engagement and interactions.

  5. Set Comment Filters and Keywords:

    Setting comment filters and keywords is an essential strategy for combating comment spam in WordPress. By configuring specific filters and identifying keywords commonly associated with spam comments, you can automate the process of flagging and moderating potentially unwanted content. Within the WordPress dashboard, under the “Discussion” settings, you have the option to specify comment moderation rules and create a comment blacklist. By adding keywords or phrases that frequently appear in spam comments, such as promotional terms or suspicious URLs, you can ensure that these comments are automatically sent to the moderation queue or marked as spam. This proactive approach helps save time and effort by filtering out unwanted comments and maintaining a cleaner and more engaging comment section for genuine user contributions.

    In addition to keyword filtering, comment filters can be set based on various criteria such as the number of hyperlinks in a comment or the presence of specific characters. By utilizing these filters, you can further refine the moderation process and reduce the likelihood of spam comments slipping through. Regularly reviewing and updating your list of filters and keywords is crucial to stay ahead of evolving spamming techniques. With an effective comment filtering system in place, you can ensure that only relevant and authentic comments are displayed on your WordPress site, enhancing the overall user experience and fostering a community of meaningful engagement.

  6. Regularly Update WordPress and Plugins:

    Regularly updating WordPress and its plugins is a critical practice for ensuring the security and stability of your website. WordPress releases updates that not only introduce new features and improvements but also address security vulnerabilities. These updates often include patches and fixes that safeguard your site against potential attacks from spammers and hackers. By staying up to date with the latest WordPress version, you can benefit from enhanced security measures and minimize the risk of comment spam infiltrating your site.

    In addition to updating WordPress itself, it is equally important to regularly update the plugins installed on your website. Plugins extend the functionality of your WordPress site but can also be potential entry points for malicious activity if not properly maintained. Plugin developers frequently release updates that address bugs, compatibility issues, and security vulnerabilities. By regularly updating your plugins, you ensure that you have the latest security patches and improvements, reducing the likelihood of comment spam infiltrating your site through outdated or vulnerable plugins. Overall, prioritizing regular updates for WordPress and its plugins is a crucial step in protecting your website and maintaining a spam-free environment.


Comment spam can be a nuisance for WordPress site owners, but by implementing the strategies outlined in this paper, you can effectively combat this issue. Enabling comment moderation, utilizing anti-spam plugins, implementing CAPTCHA or reCAPTCHA, disabling HTML in comments, setting comment filters and keywords, and regularly updating WordPress and plugins are key steps to stop comment spam in WordPress. By maintaining a clean and engaging comment section, you can foster meaningful interactions with your site’s visitors and create a positive user experience.

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