The EndpointCentral installation directory contains important files required for it to function properly, including files that are used to start and stop the product, files containing database configuration information, license file etc.
Unauthorized access to the EndpointCentral installation directory could allow someone to,
This document discusses the proactive measures implemented to prevent unauthorized users from accessing the EndpointCentral installation directory and modifying its contents to ensure privilege-based access.
For new installations of builds 11.2.2322.01 and above, only the following types of user accounts are automatically provided access to the installation directory.
Steps to check installation build number,

Unauthorized users can be prevented from accessing the EndpointCentral installation directory for builds lower than 11.2.2322.01 by running the SetPermission.bat

Note: If you have a fail over server (FoS) setup in your environment, the same steps need to be carried out in the secondary server as well.
After running the batch file, certain permissions have to be manually reallocated.
1) For fail-over-server setups,
Refer to this doc for steps to configure permissions in the failover server - Configure Failover Server
2) For MSSQL server backup enabled setups,
Refer to this doc for steps to configure permissions in the backup server - Data backup and restore