SiteLock is web security utility tool that is added to your website. It scans your website for threats and other vulnerabilities. It can also fix if a problem is found.
SSL certificate is mainly used to establish a safe communication between a browser and server. It usually encrypts the information before it is being transmitted to the destination.
Symantec’s powerful platform unifies cloud and on-premises security to provide advanced threat protection and information protection across all websites, endpoints, networks, email, and cloud applications.