JRE8-WN-000060 - Oracle JRE 8 must default to the most secure built-in setting - deployment.security.level.locked
Applications that are signed with a valid certificate and include the permissions attribute in the manifest for the main JAR file are allowed to run with security prompts. All other applications are blocked. Unsigned applications could perform numerous types of attacks on a system.
Navigate to the system-level 'deployment.properties' file for JRE. Add the key 'deployment.security.level=VERY_HIGH' to the 'deployment.properties' file. Add the key 'deployment.security.level.locked' to the 'deployment.properties' file.