Spam is very annoying. Unfortunately, running a popular platform like Magento will make your store vulnerable to spam as bots exist that target Magento store. The biggest problem with spam is that it requires you to filter reviewed, support emails, etc, which wastes your time. Fortunately, we have a couple Magento extensions that can reduce spam in your store. There are two basic strategies:
Adding a CAPTCHA to forms
This is the most common strategy to stop automated bots from submitting forms. Our Magento captcha extension is the best solution to this. You can add either a Google reCAPTCHA or an Open Captcha to your contact form. You can also disable it for logged in users so it is less annoying to users.
Creating honey pots to block bad bots
The other strategy is to entice bots to submit data to hidden forms and identify them as a result. Once identified, they can be blocked from your site. Our Magento bot blocker extension accomplishes this for you. In addition, it will rewrite existing forms to make it difficult for automated bots to understand how to submit them. Bot blocker also has the added advantage of preventing bad bots from scraping your site for information as they will be banned once identified.