SiteLock probes your site to determine if fields and forms on your site are vulnerable to attempts by hackers looking to exploit these forms to gain access to your data. This will result in attempts to submit forms on your website with encoded data.
If you wish to stop receiving these email's or entries, you may want to do some validation on the fields within your form to ensure that data is being submitted in the correct formats before triggering email's or database inputs. Since we insert data that would not likely be valid for any fields on your site, these validation measures should stop you from getting these empty email's or entries. It's also good coding and security practice to make sure your site's visitors are providing the correct data in the expected formats. If you need help with form validation, contact the SiteLock Support team