Although any site needs at least a minimum level of security, some types of sites need enhanced protection. For example, they can process bank card data or store personal information of users. What is the level of security required on your hosting?
I think Organization require powerful security strategy that can efficiently fight back. The level to revealing that set of skills is analytics that is enabled through machine learning. Large and midsize enterprises need to install security analysis tools, which lets them impend the attacks before it’s being launched.
The level of security for a website is based on its operation era..so someone need to spend money/effort to secure it based on how important it is and what operation it is managing. The very basic level I would say SSL and website monitoring/scanning.