What features are offered with the Atomic ModSecurity Rule Set?

Question

What features are offered with the Atomic ModSecurity Rule Set?

How to protect Plesk from web shell vulnerability?

Answer

1. Starter version of the Atomic ModSecurity rules provides basic web application firewall functionality. Rules are updated on a monthly basis.
2. Advanced ModSecurity Rules by Atomicorp include basic rules plus multiple advanced features protecting from a wide range of attacks like DDoS, Brute force attacks, Spam and malware, web shell, SQL injection, etc. The security rules updated in real time. 
   Advanced ModSecurity Rules by Atomicorp is a paid extension and required the additional license: Advanced ModSecurity Rules by Atomicorp

Additional Information

The full list of features is given in Plesk documentation:

Atomic ModSecurity Rule Sets