How to Prevent Spam in Online Forms?

How to Prevent Spam in Online Forms?

Have you ever encountered the frustration of setting up your online form and waiting for the first submissions?

You've received a notification, which means someone has filled your form.

You're rushing to the dashboard, ready to see your new lead. But the disappointment kicked-in, as you see random, gibberish names such as "ABH4190". You're trying to process this, but as you see the other fields, it's even more gibberish.

A bot has filled your form, because it isn't protected against automated softwares used by malicious bots.

Only a few minutes has passed, and another batch of fake filled forms come. Your form is under attack, and there's nothing you can do, except removing your form and hurting your business.

What is "Web Form Spam"?

Web form spam, also known simply as form spam, refers to the submission of unwanted, irrelevant, or malicious content through online forms on websites. These forms could include contact forms, registration forms, comment sections, and any other input fields that allow users to submit information or messages.

Web form spam is a type of abuse that takes advantage of the interactive nature of the internet to distribute unsolicited and often harmful content. The primary goal of web form spam is to promote certain products, services, websites, or to generate fraudulent activities.

In other words, web form spam is similar to those junk spam emails that clog your inbox but for online forms.

Spammers automate the submission process using bots or scripts, flooding web forms with submissions that are typically unrelated to the purpose of the form.

What are common Online Form Spams?

Web form spam can come in various forms, including:

  1. Promotional Spam: This type of spam involves promoting products, services, or websites. It often includes links to sites selling counterfeit goods, fake services, or questionable content.

  2. Phishing Attempts: Spammers may use web forms to try and trick users into revealing sensitive information such as passwords, credit card details, or personal information under false pretenses.

  3. Malware Distribution: Some form spam may contain malicious links or attachments that, when clicked, can lead to the download of malware onto the user's device.

  4. Content Scraping: Spammers might use automated tools to fill forms with links to their own sites, hoping to generate traffic and improve their search engine rankings.

  5. Comment Spam: Comment sections on blogs or forums can be targeted by spammers looking to leave irrelevant or self-promotional comments, often with links to external sites.

How to identify Online Form Spams?

Identifying form spam can be challenging since spammers often use automated techniques to mimic legitimate user behavior.

However, there are several strategies you can use to help identify and prevent form spam:

  • CAPTCHA Challenges: CAPTCHAs are designed to differentiate between human users and bots. They present challenges that are easy for humans to solve but difficult for automated scripts. Common CAPTCHA types include image recognition, puzzles, and simple math problems.

  • Honeypot Fields: Honeypot fields are hidden form fields that are only visible to bots. Legitimate users won't fill them out, but bots may unknowingly populate these fields. If the honeypot field is filled out, you can treat the submission as spam.

  • Time-Based Analysis: Check the time taken between page load and form submission. If a submission occurs almost instantly, it could be a sign of automation.

  • Rate Limiting: Implement rate limiting to restrict the number of submissions from a single IP address or user in a short period. Legitimate users won't be affected, but automated bots will be limited in their activity.

  • Content Analysis: Check the content of the submissions for signs of spam, such as irrelevant keywords, promotional language, or unusual formatting.

  • Machine Learning: Implement machine learning algorithms that learn from past data to identify patterns of spam behavior. These systems can become more effective over time.

  • Manual Review: For critical forms, consider implementing a manual review process where submitted content is checked by a human before being accepted or published.

  • Validation Rules: Use strict validation rules for form fields. For example, ensure that email addresses are correctly formatted, phone numbers have the right number of digits, and other required fields are filled out.

What are the consequences of not having an Online Form Spam Protection?

Not having proper form spam protection in place for a business can lead to a range of negative consequences that can impact various aspects of the business's operations, reputation, and user experience. Here are some of the potential consequences:

  • Wasted Resources: Without spam protection, your team might spend a significant amount of time manually sifting through and deleting spam submissions. This wastes valuable human resources that could be better utilized for more productive tasks.

  • Lost User Engagement: Legitimate users might be discouraged from interacting with your online forms if they repeatedly encounter spam. This can result in a decline in user engagement, feedback, inquiries, and other valuable interactions.

  • Damaged Reputation: Spammers often promote irrelevant or offensive content. If your website or platform becomes a hub for such content, it can tarnish your reputation, making users perceive your business as unprofessional, unsafe, or unreliable.

  • Reduced Trust: Users expect their data to be handled securely and responsibly. If spammers gain access to your forms, users may become wary of submitting personal information, leading to a decrease in trust and a drop in user participation.

  • Misdirected Communication: Form spam can bury genuine user inquiries or feedback under a deluge of irrelevant messages. This could lead to missed business opportunities, customer dissatisfaction, and even lost sales.

  • Negative SEO Impact: If your website becomes a target for comment spam or form spam, it can result in poor-quality backlinks, affecting your search engine rankings. This can make it harder for your business to be discovered by potential customers.

  • Resource Overload: Large volumes of form spam submissions can overload your server and impact your website's performance. This could lead to slow loading times, downtime, and a poor user experience.

  • Legal and Regulatory Issues: Depending on your industry and location, failing to protect user data adequately can lead to legal and regulatory consequences. If sensitive user data is exposed due to lack of spam protection, your business could face legal liabilities and penalties.

  • Financial Loss: Spam can be a vector for phishing attacks or malware distribution. If users are tricked into clicking malicious links or downloading harmful attachments, it could result in financial losses for them and potential legal repercussions for your business.

  • Ineffective Marketing: If you rely on email marketing campaigns or customer communication through forms, spam submissions can dilute the effectiveness of your marketing efforts by skewing your data and leading to inaccurate insights.

How to create a Safe Online Form in few steps?

Creating secure web forms using Useform is easy and straightforward. Here's how you can achieve it:

  1. Sign-up for a free account

Start by creating a free account and choose between creating your Online Web Form from scratch or using a pre-built template.

  1. Security features for your online form

Once your Online Web Form has been designed, Useform offers various security features to ensure you receive secure submissions:

  1. ReCAPTCHA is an integration that will make sure you receive near-zero spam submissions.

User-Agent Monitoring is included in Useform. When reviewing your submissions, you can preview the user-agent sent.


In an age where digital interactions define our connections and transactions, safeguarding the integrity of online forms has never been more critical. The battle against form spam isn't just a matter of convenience; it's a strategic imperative for businesses aiming to cultivate trust, foster genuine connections, and provide seamless user experiences.

By dedicating resources to form spam prevention, businesses can create an environment where users feel valued, data is protected, and interactions are authentic. The journey toward form security requires vigilance and adaptability, but the rewards in terms of enhanced reputation, improved user engagement, and better data quality are well worth the effort.

In doing so, we can pave the way for a future where online forms are trusted conduits for communication and collaboration, propelling businesses toward sustained success in the digital age.

Ditch your bloated form builder and
focus on what matters the most.

Create a form, embed it into your website and share it with your clients, in minutes.

Get started for free