Have you ever opened your GA4 report one day and noticed an increase in traffic from an unfamiliar domain? Is our content going viral, or is it just a data error?
Last February, Elephant Company’s website dashboard also recorded a whopping 499 visits from the domain leadsgo.io.
This type of traffic is likely to be "referral spam"rather than potential customers interested in your service. Referral spam goes beyond being a mere nuisance; it can distort all data-driven marketing decisions and undermine your team's credibility.
Today, I’ll provide a systematic guide to what referral spam like leadsgo.io actually is, how it negatively impacts B2B marketing data, and practical methods for blocking future traffic and cleaning up past data.
leadsgo.io / referral is ghost spam targeting GA4 reports
"leadsgo.io," which suddenly appeared in your GA4 reports, is a typical form of referral spam. It consists of "fake visit records" intentionally left by spammers to pique marketers' curiosityand has no connection whatsoever to visits from actual potential customers.
How does referral spam work?
Referral spam is a technique that involves recording the spammer’s domain in the data of analytics tools like GA4, thereby enticing website administrators or marketers who notice it to click on the domain directly. It essentially acts as a kind of bait, leveraging curiosity—such as “Where did this traffic come from?”—to drive traffic to the spammer’s promotional site.
In fact, leadsgo.io’s parent company is Trafficbooster. This site offers a service that sells fake visitor traffic generated by bots, claiming to “artificially increase website traffic.”
In other words, leadsgo.io is indiscriminately leaving traces in the reports of GA4 users around the world to promote its fake traffic sales service.
💡Why do people use fake traffic bots like Trafficbooster?
The company claims that it can not only boost the metrics on its clients' data dashboards using fake traffic but also improve their Google SEO. They say this is because Google tends to rank sites higher in search results the more traffic they have.
Traffic generators like this are one of the black-hat SEO techniques,such as mass backlink creation. Black-hat SEOrefers to unethical methods used to push a webpage to the top of search engine results. While these methods may boost search rankings in the short term, they can lead to Google penalties and a drop in site rankings in the long run, so caution is advised. For more detailed information on black-hat SEO, please refer to our article titled “From Search Engine Exclusion to Penalties? Black-Hat SEO You Must Avoid at All Costs.”
I get what referral spam is, but what is ghost spam?
The latest spam, such as leadsgo.io, uses a more sophisticated method known as "ghost spam." While typical crawler spam directly visits a website's server, ghost spam doesn't even access our website; instead, it sends fake data directly to GA4's data collection servers.
The reason ghost spam is able to operate lies in the nature of the Measurement Protocol, which ishow GA4 collects data. The Measurement Protocolis an API interface designed to allow data to be sent from a variety of environments, including not only websites but also kiosks and servers. Ghost spam exploits this protocol by using a simple script to generate large amounts of fake visit data and then sending it directly to the GA4 servers. Since there are no physical visits, no records are left in server logs, making it difficult to track.
If you come across an unfamiliar recommended domain, you should avoid clicking on it or visiting it out of curiosity. Doing so may expose you to unwanted advertisements or potential security risks.
Why Are Referral Spam and Ghost Spam So Destructive to B2B Marketing Data?
You might think, “Isn’t it a good thing that traffic numbers are increasing?” However, if you ignore spam traffic, it can seriously skew all data-driven marketing decisions. In B2B marketing, in particular, qualitative metrics such as conversion rate (CVR), average session duration, and lead qualityare far more important than mere traffic volume. Spam traffic can undermine all of these metrics.
For example, if you have 1,000 actual visitors and 10 conversions, the conversion rate is 1%. However, if 500 spam visits are added, bringing the total number of visitors to 1,500, the conversion rate drops to 0.66%, leading to an underestimation of your marketing performance. Furthermore, bot traffic reduces the average session duration to nearly zero seconds and drives the bounce rate up to 100%, making it impossible to analyze the behavior of actual users.
What would happen if you reported, “Traffic this month has grown by 50%!” based on this fake data, only to later discover that most of it was spam? The team’s trust in all data-driven strategies and analyses could collapse in an instant. Therefore, you should regularly review your GA4 reports and dashboards, and take immediate action if you spot any unfamiliar domains.
A 3-Step Practical Guide to Blocking Ghost Spam Traffic in GA4 Reports
You can block spam traffic using GA4’s admin settings and reporting features. I’ll walk you through a four-step process to block future spam, clean up existing data, and prepare for similar attacks.
Step 1: Block the same spam from coming in (Disable unwanted recommendations)
First, you need to block future spam traffic. Using GA4’s “Exclude Referrals” feature, you can prevent traffic from specific domains from being recorded in your reports.
✅ Turn off unwanted recommendations
1. Click the [Admin] gear icon in the bottom-left corner of the GA4 admin page
2. Click [Properties] – [Data Collection and Editing] – [Data Streams] – [My Web Streams]
3. Click [Configure Tag Settings] at the bottom of the screen (Google Tag)
4. Click [View Details], then click the [List Unwanted Recommendations] menu
5. Enter the domain you want to block (leadsgo.io) in the "Recommended Domain" field and click the [Save] button
Once you've completed this setup, traffic originating from the specified domain will be automatically excluded from future GA4 data.
Step 2: Analyze historical data after excluding spam (using report filters)
Since the "Unwanted Recommendations" setting only blocks traffic generated after it is enabled, past data already recorded in the report remains unchanged. To accurately analyze past performance, you should use the "Filter" feature when viewing reports to temporarily exclude spam data.
✅ How to set filters (based on the Traffic Acquisition report)
1. Go to the [Reports] > [Lead Generation] > [Traffic Acquisition] menu
2. Click the [Add Filter] button at the top of the report table
3. In the [Select Metric] dropdown menu, search for “Session Source/Medium” and select it
4. Select "Exclude"from the [Search Type] dropdown menu
5. [Value] for spam traffic (leadsgo.io / referral) After entering the information, click the [Apply] button
You can now view the filtered data in the report, with the spam traffic excluded. Since this filter applies only to the current report, you’ll need to apply it each time you need to view the data.
Step 3: Establish a routine for periodic data cleansing
Referral spam can continue to appear in various forms, not just on leadsgo.io. Therefore, it’s important to establish a routine for regularly reviewing and cleaning your data, rather than relying on one-time measures.
✅ Monthly Data Hygiene Checklist
- Review new referral sources: In the [Lead Generation] > [Traffic Acquisition] report, sort by "Session Source/Medium" and check for any unfamiliar or suspicious referral domains.
- Identifying abnormal metrics: If traffic from a specific source or medium has a bounce rate close to 100% or an average session duration of less than 1 second, it is likely spam.
- Block new spam: If you encounter a suspicious domain, please add it to your "Unwanted Recommendations" settings immediately to block it.
B2B Marketers! Cut through the noise and focus on meaningful customer signals.
Leadsgo.io, which we examined today, is a prime example of referral spam and ghost spam. This type of fake traffic undermines the reliability of data and can lead to wasted resources and poor decision-making, so it’s important to respond systematically as soon as it’s detected.
Accurate data is essential for developing an effective growth strategy. The success of content marketing also begins with understanding not just the raw traffic numbers, but which “meaningful users” engage with specific content and the journey they take to convert. Only by focusing on actual customer behavior signals—rather than distorted metrics—can you achieve real results.
Do you want to achieve tangible results based on clean data, but find yourself struggling with complex data management and analysis? From content growth strategies to data dashboard management, subscribe to our newsletter to receive practical insights from Elephant Company on how to analyze and manage data that drives business growth for B2B companies.
