To prevent spam on your website contact form and comments fields you can use one of the four methods discussed in this blog. I recommend CleanTalk.
If your business depends on having traffic to your website for any purpose such as selling product, generating leads, or showing advertisements, you absolutely must interrogate the analytics to uncover the “real” traffic
Fake hits or invalid traffic to a website manipulate Google Analytics to suit the purposes of anyone who has a financial interest in doing so. I recently performed a site audit on a website which showed this invalid traffic.
Have you ever received an email from your own email address …and been shocked at the content?”I didn’t send that? …did I? ” This is called “spoofing”