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Negative SEO Attacks: 8 Types & Prevention Checklist

Defining Negative SEO

Negative SEO is the unethical practice of intentionally sabotaging a competitor’s search engine rankings instead of improving your own website. 

Rather than earning higher positions through quality content, technical optimization, and legitimate link building, attackers use manipulative tactics that violate search engine guidelines to damage another site’s visibility. 

Common methods include building large volumes of spam backlinks, scraping and republishing content, hacking websites to alter on-page elements, or creating other signals that may harm a site’s credibility in search results. 

While negative SEO attacks do occur, search engines like Google continuously improve their algorithms and spam detection systems to identify and reduce the impact of these malicious tactics.

Types of Negative SEO Attacks

Negative SEO attacks can take several different forms, including:

Smear campaigns (fake DMCA complaints): Filing fraudulent copyright infringement or DMCA takedown requests to disrupt your content or damage your online presence.

Fake negative reviews and brand mentions: Posting fake reviews, creating fake social media profiles, or spreading false information to harm your brand’s reputation.

Content scraping & duplication: Copying your website’s content and republishing it across multiple websites, creating duplicate content issues.

Website hacking and cyberattacks (e.g., DDoS attacks): Hacking your website to inject malware, modify or delete content, alter on-page SEO elements, or disrupt website availability.

Malicious spam backlinks and toxic anchor text: Building hundreds or thousands of low-quality or spammy backlinks to your website, often using irrelevant or harmful anchor texts such as “viagra,” “online poker,” “casino,” or “porn,” to manipulate your backlink profile and damage your search rankings.

Fake link removal requests: Impersonating your brand to request the removal of valuable backlinks from websites linking to you.

Hotlinking and excessive crawling: Hotlinking your media files or sending aggressive bots to consume server resources and affect website performance.

Domain infringement and brand impersonation: Registering misleading domains that closely resemble your brand (e.g., Mcdonald → Macdonald, Adidas → Adidos or Adidas888) to confuse users, hijack branded searches, facilitate phishing, dilute your brand, or use defamatory domains such as yourdomain. porn, yourdomainshit.com, yourdomain.xxx, or y0urd0main.com.

Below, we’ll walk through each of these negative SEO attacks in detail.

1. Smear Campaigns

Smear Campaigns

A smear campaign is a type of negative SEO attack that aims to damage a business’s online reputation and credibility by spreading false, misleading, or defamatory information. 

Unlike traditional SEO tactics that improve a website’s visibility, smear campaigns attempt to erode trust, discourage potential customers, and indirectly impact search performance.

Common tactics include: 

  • Publishing defamatory blog posts; e.g., “Is {competitor brand} a scam?”
  • Creating fake social media profiles to impersonate a brand; 
  • Spreading rumors through online communities such as Reddit;
  • Submitting fraudulent DMCA (copyright infringement) complaints; 
  • or sharing false information with influencers and industry publications.

While these attacks may not directly affect your website’s technical SEO, they could harm your brand reputation, erode user trust, reduce click-through rates, and drive potential customers to competitors.

To minimize the impact, monitor your brand mentions regularly, respond professionally to legitimate complaints, and act quickly to report or remove false or defamatory content whenever possible.

2. Fake Review Spam & Negative Mentions

Fake Review Spam & Negative Mentions

Fake review spam is a form of negative SEO that involves posting false or misleading negative reviews to damage a business’s reputation. Because online reviews heavily influence consumer trust and purchasing decisions, they are often one of the first targets of malicious competitors.

Attackers may leave fake one-star reviews on platforms such as Google, review platforms, business directories, or social media pages. 

They may also post negative mentions across forums, blogs, or other online communities using fake or anonymous profiles. 

These tactics are intended to undermine your brand’s credibility, discourage potential customers, and reduce click-through rates from search results.

How to Counter Fake Reviews

If you identify fake reviews, report them to the relevant review platform as soon as possible. 

While the removal process can be slow, submitting clear evidence, such as proof that the reviewer was never a customer or that the review contains false information, can strengthen your case. 

If the issue is causing significant harm, consider contacting the platform’s support team directly to request a faster review.

In addition to removing fake reviews, focus on building a strong online reputation. Online reputation management (ORM) involves monitoring reviews, brand mentions, and social media discussions to understand how your business is perceived across digital platforms. 

Encourage genuine customers to leave honest reviews, respond professionally to legitimate feedback, and address concerns promptly. A consistent stream of authentic positive reviews can help reduce the impact of malicious or fraudulent ones over time.

3. Content Scraping 恶意采集

Content Scraping & Duplication

Content scraping is a negative SEO technique in which someone copies content from your website and republishes it on other websites without permission. This is typically carried out by automated bots that crawl your pages, extract text, images, or other content, and distribute it across multiple domains. In some cases, individuals may also manually copy and republish your content.

The goal is to create duplicate versions of your content across the web. While Google is generally capable of identifying the source, problems can arise if the scraped version is indexed before your original page. To maximize this possibility, scrapers often copy and republish newly published content almost immediately after it goes live.

Although Google’s algorithms have become increasingly effective at identifying the canonical source, large-scale content scraping can still confuse search engines, dilute your content’s visibility, and consume server resources through excessive crawling.

How to Counter Web Content Scraping

Regularly monitor your content for unauthorized copies using plagiarism detection tools such as Copyscape.

If duplicate versions of your content appear online, contact the website owner and request that they remove the copied content or provide proper attribution with a link to the original source. While some website owners may comply, scraper sites often ignore these requests.

If the content is not removed, consider submitting a DMCA (Digital Millennium Copyright Act) takedown notice to the website’s hosting provider, CDN, or search engines such as Google to request the removal of the infringing content from search results.

To reduce future scraping, implement technical measures such as a Web Application Firewall (WAF), rate limiting, bot detection, CAPTCHAs on sensitive areas, and IP blocking for abusive crawlers. 

While these measures cannot eliminate scraping entirely, they can significantly reduce automated scraping activity and protect your server resources.

4. Website Hacking and Cyberattacks

Website Hacking and Cyberattacks

Website hacking is one of the most damaging forms of negative SEO. Attackers exploit security vulnerabilities to gain unauthorized access to your website, allowing them to inject malicious code, add spam content, replace or insert links, modify on-page SEO elements, alter your robots.txt file, or redirect visitors to malicious websites.

These attacks can severely impact your website’s search performance and reputation. Search engines may detect malware or suspicious behavior and display security warnings, de-index affected pages, or even blacklist your website entirely. Beyond SEO, hacking incidents can also lead to data loss, service disruption, and a significant loss of user trust if not identified and resolved quickly.

How to Prevent Website Hacking and Cyberattacks

Preventing website hacking requires close collaboration between SEO teams, developers, DevOps engineers, and cybersecurity professionals. While SEOs should be aware of common security best practices, securing a website is primarily the responsibility of the technical team.

Some recommended security measures include:

  • Keep your CMS, themes, plugins, and server software up to date.
  • Use strong, unique passwords and enable two-factor authentication (2FA) for all administrator accounts.
  • Install a Web Application Firewall (WAF) and reputable security tools to block malicious traffic.
  • Perform regular website backups and verify that they can be restored successfully.
  • Ensure your website uses HTTPS with a valid SSL/TLS certificate to encrypt data in transit.
  • Limit administrator access and regularly review user accounts and permissions.

How to Recover from a Hacking Attack

If you suspect your website has been compromised, investigate and resolve the issue immediately. Start by checking the Security Issues report in Google Search Console, which may alert you if Google has detected malware or other security threats. However, you should also perform a comprehensive security scan, as not all compromises are detected by Google.

Identify and fix the root cause of the breach, such as an outdated plugin, vulnerable theme, or compromised credentials. Remove any malicious files, spam pages, injected code, or unauthorized redirects, and clean your database if necessary. 

Change all administrator passwords and API keys, update all software, and restore your website from a clean backup if required. Once the site is fully secured, request a security review in Google Search Console if your website has been flagged by Google.

5. Malicious Spam Backlinks and Toxic Anchor Text

Spammy Backlinks

Building large numbers of low-quality or spammy backlinks is one of the most common forms of negative SEO because it is inexpensive and easy to execute. 

Attackers may use automated tools, link farms, private blog networks (PBNs), comment spam, or other low-quality websites to generate thousands of backlinks pointing to a target website. 

These links are often accompanied by spam-related anchor texts in an attempt to associate the website with irrelevant or harmful topics.

In the past, these attacks posed a greater risk to search rankings. Today, however, Google’s algorithms are much better at detecting and ignoring unnatural or spammy backlinks.

According to Google, most low-quality link spam directed at a website is automatically discounted rather than treated as a ranking signal. As a result, large-scale spam backlink attacks are generally less effective than they once were.

How to Detect and Fix Spam Backlinks

Regularly audit your backlink profile using tools such as Google Search Console, Ahrefs, or Semrush. Look for sudden spikes in referring domains, large numbers of backlinks from low-quality or irrelevant websites, or an unusual increase in spam-related anchor text.

Another useful indicator is the Referring IPs or Referring Subnets report. If hundreds or thousands of referring domains originate from the same subnet or IP range, it may indicate a coordinated link network, such as a Private Blog Network (PBN). However, this should be treated as only one signal, as legitimate websites can also share the same hosting infrastructure.

FAQ: Should You Disavow Spam Backlinks?

In most cases, no. Since the rollout of Google Penguin 4.0, Google’s algorithms have become much better at identifying and ignoring spammy or manipulative backlinks automatically. As a result, most negative SEO link attacks have little to no impact on rankings.

Google’s Disavow Tool should only be used as a last resort. Consider using it only if you have strong evidence that unnatural backlinks are negatively affecting your website or if you have received a manual action for unnatural links.

Disavowing legitimate backlinks by mistake can harm your SEO performance, so review suspicious links carefully before submitting a disavow file.

Click to read more on how to disavow links.

backlink-removal-tool-google-disavow
Used with caution

More on Spammy Backlinks in 2026

Google has become increasingly effective at detecting and ignoring spammy backlink attacks. As a result, large-scale spam link campaigns are unlikely to have a significant impact on your search rankings.

Although these attacks are relatively uncommon and generally pose a low risk, it’s still a good practice to monitor your backlink profile regularly for unusual activity. This helps you identify potential issues early and ensure your backlink profile remains healthy.

Much of the concern surrounding negative SEO is amplified by SEO tools and service providers that offer negative SEO detection or recovery services. In reality, Google is generally capable of identifying and discounting obvious link spam automatically.

As Google’s John Mueller has stated, there is usually no need to take action on spammy backlinks because Google’s algorithms already ignore them.

6. Fake Link Removal Requests

Fake Link Removal Requests

A fake link removal request is a deceptive tactic in which an attacker impersonates your business or SEO agency and contacts websites that link to you. The attacker falsely claims that the backlinks are no longer wanted or violate Google’s guidelines and requests that the webmaster remove them.

A typical email might state that, due to recent algorithm updates, the linked website no longer requires the backlink and asks for its removal. Because the request appears legitimate, some website owners may comply without verifying its authenticity.

Although this type of attack is relatively uncommon, it can be highly damaging if successful. Losing multiple high-quality backlinks from authoritative websites may weaken your website’s authority and lead to a decline in search rankings. Since these are often your most valuable backlinks, recovering them can be time-consuming and difficult.

7. Hotlinking and Excessive Crawling (server-based)

Hotlinking and Excessive Crawling

Hotlinking is a negative SEO tactic in which another website directly embeds images, videos, or other media files hosted on your server without your permission. Although the content appears on the external website, the files are still served from your server, consuming your bandwidth and other server resources. Large-scale hotlinking can increase hosting costs and slow down your website, negatively affecting page speed and user experience.

Another server-based attack is excessive crawling, where attackers use automated bots to repeatedly crawl your website with the intention of exhausting server resources. Unlike legitimate search engine crawlers, these bots generate unnecessary requests that could slow down your website or even cause temporary outages.

Both hotlinking and excessive crawling can degrade website performance, increase server load, and affect user experience. If left unchecked, prolonged performance issues or downtime may indirectly impact your search rankings and overall website health.

How to Counter Hotlinking and Excessive Crawling

The first step is to identify the source of the excessive requests. Review your web server logs, CDN analytics, or hosting dashboard to determine whether the traffic originates from legitimate users, search engine crawlers, or malicious bots. Your hosting provider, developers, or DevOps team could help analyze unusual traffic patterns and determine whether your website is experiencing a hotlink attack or a bot attack.

To prevent hotlinking, configure your web server or CDN to block unauthorized websites from directly accessing your images and other media files. On Apache servers, this can be achieved using .htaccess rules, while other web servers and CDNs provide similar hotlink protection features. Some website owners also replace hotlinked images with a warning image or watermark to discourage misuse.

For excessive crawling attacks, implement a Web Application Firewall (WAF), rate limiting, bot management, or DDoS protection to filter malicious traffic before it reaches your server. If the abuse originates from a specific website, consider blocking the offending IP addresses or domains. Where appropriate, you may also contact the website owner or submit a DMCA takedown request if your copyrighted content is being used without permission.

Note: As with website hacking and cyberattacks, mitigating server-based attacks falls primarily under the responsibility of DevOps, cybersecurity teams, or your hosting provider. SEO and marketing teams should work closely with these technical experts throughout the investigation and recovery process.

8. Domain Infringement and Brand Impersonation

Domain Infringement & Brand Impersonation

Domain infringement and brand abuse tactic in which attackers register domain names that closely resemble a legitimate brand to deceive users and exploit its reputation.

These lookalike domains may use common misspellings, additional words or numbers, different domain extensions, or character substitutions;

For example, Adidas.com → Adidos.com, Adidas888.com, or y0urdomain.com.

The goal is to confuse users, divert branded search traffic, facilitate phishing attacks, impersonate the brand, or dilute its online reputation.

In some cases, attackers also register defamatory domains such as yourdomain.xxx or yourdomainshit.com to damage a company’s credibility and erode customer trust.

How to Counter Domain Infringement and Brand Impersonation

Protecting your brand against domain infringement requires both proactive monitoring and defensive domain registration.

Register common variations of your domain name, including common misspellings, different top-level domains (TLDs), and regional extensions where appropriate. This helps prevent attackers from registering lookalike domains to impersonate your brand or mislead users. Large organizations often adopt this defensive registration strategy for their most valuable trademarks.

Regularly monitor newly registered domains that resemble your brand using domain monitoring services or trademark monitoring tools. If you discover a suspicious domain being used for phishing, impersonation, or trademark infringement, report it to the domain registrar or hosting provider and request its suspension. Where applicable, you may also file a trademark complaint or initiate a UDRP (Uniform Domain-Name Dispute-Resolution Policy) proceeding to recover domains that infringe on your trademark rights.

To protect your legitimate domain, enable domain registrar lock, DNSSEC, and multi-factor authentication (MFA) on your registrar account to reduce the risk of unauthorized domain transfers or account compromise. Finally, monitor branded search results and online mentions regularly so you can identify impersonation attempts before they significantly impact your customers or brand reputation.

Prevention Checklist

How to Prevent Negative SEO Attacks (Checklist)

Monitor Google Search Console: Regularly check the Manual Actions and Security Issues reports for any warnings or penalties.

Monitor Your Backlink Profile: Audit your backlinks for sudden spikes in low-quality links, suspicious referring domains, or toxic anchor text.

Audit Your Valuable Backlinks: Keep track of your most important backlinks and investigate any unexpected link losses. Always use an email address from your own domain (e.g., yourname@yourdomain.com) when requesting link removals or edits to prevent impersonation.

Secure Your Website: Keep your CMS, plugins, and themes up to date, enable two-factor authentication (2FA), use HTTPS, and maintain regular backups.

Check for Content Scraping: Use tools such as Copyscape to identify unauthorized copies of your content and submit DMCA takedown requests when necessary.

Online Reputation Management: Track brand mentions, online reviews, and lookalike domains so you can quickly respond to fake reviews, impersonation attempts, or smear campaigns.

Real world example

Real-World Examples of Negative SEO Services

Disclaimer: The screenshots below are shared for educational purposes only. I do not endorse or promote negative SEO. 

They simply illustrate that negative SEO services are publicly available, emphasizing the importance of understanding these threats and how to defend against them.

google-search-results-negative-seo-service
Google search results for negative SEO service
freelancer-negative-seo-service
Image source: freelancer.com

FAQs

Is Negative SEO Illegal?

Negative SEO is unethical, and some tactics may also be illegal. While actions such as building spammy backlinks or posting fake reviews typically violate search engine guidelines, activities like website hacking, phishing, identity impersonation, or submitting fraudulent legal complaints can violate laws and result in legal consequences. 

Fortunately, many common negative SEO tactics, especially spam backlink attacks, are largely ineffective today because Google is generally able to detect and ignore them.

Is Negative SEO Still Relevant in 2026?

Negative SEO still exists, but it is generally less effective than it was in the past. Search engines, especially Google, have become much better at detecting and mitigating common attacks such as spammy backlinks. However, more sophisticated threats like website hacking, fake reviews, content scraping, and brand impersonation can still cause harm if left unaddressed.

What's the Difference Between Black Hat SEO and Negative SEO?

I would say the main difference is the intent.

Black hat SEO aims to manipulate search engine algorithms to improve the rankings of your own website using tactics that violate search engine guidelines.

Negative SEO, on the other hand, aims to harm a competitor’s website or online reputation to reduce its search rankings or credibility.

What is Penguin 4.0

Penguin 4.0 is a Google algorithm update introduced in 2016 that targets spammy and manipulative link-building practices. Instead of penalizing entire websites, Penguin 4.0 primarily devalues unnatural backlinks in real time, making most spam backlink attacks far less effective.

What is DMCA?

The Digital Millennium Copyright Act (DMCA) is a U.S. copyright law that protects original copyrighted content and provides a process for copyright owners to request the removal of infringing material from websites and search engines.

What is a DMCA Takedown Request?

A DMCA takedown request is a formal legal notice submitted to a website owner, hosting provider, or search engine (such as Google) requesting the removal of content that infringes your copyright. It is commonly used to remove unauthorized copies of articles, images, videos, or other original content from the internet.

What is WHOIS Used For?

WHOIS is a lookup service that provides information about a domain name, such as its registrar, registration and expiration dates, nameservers, and, where publicly available, the domain owner’s contact details. 

It is commonly used to investigate suspicious domains, verify domain ownership, or gather information for cybersecurity and brand protection purposes.

What Is WhoIsHostingThis Used For?

WhoIsHostingThis is a tool that identifies the web hosting provider behind a website. It can help you determine where a website is hosted so you can contact the hosting provider when reporting abuse, copyright infringement, phishing, or other malicious activities.

References reading:

  1. Ahrefs’ blog on negative SEO
  2. RankMath’s blog on negative SEO

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