Hi Luis,
you can find details in the Release Notes document https://my.webratio.com/learn/learningobject/webratio-72-release-notes-v-72. In fact you can see specific sections such as "Moving from ....", "Fixed in ...." and "Security Fixes and Warnings".
Moreover If you are working with an Enterprise Project the "security" properties could be also reported in the related config file in <EnterpriseProject>_ROOT.jar\conf\AppConfig.properties.
If you create a new Web Project you can obtain RTXConfig.properties file with comments and description for each security Property.
A possible configuration could be:
hostWhitelist=MyCompany.MyDomain.com
hostAlwaysAllowed=false
checkRequestOrigin=true