A certificate revocation list is a directory which contains a list of certificates that have been revoked for various reasons. Certificates may be revoked due to improper issuance, compromise of the certificate, and failure to adhere to policy. Therefore, any certificate found on a CRL should not be trusted. Permitting execution of an applet published with a revoked certificate may result in spoofing, malware, system modification, invasion of privacy, and denial of service. Ensuring users cannot change settings, contributes to a more consistent security profile. NOTE: The 'JRE' directory in the file path may reflect the specific JRE release installed.

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Navigate to the system 'deployment.properties' file for Java, the default location is /usr/java/jre/lib/deployment.properties. Add the 'deployment.security.validation.crl.locked' key to the deployment.properties file. Add the 'deployment.security.validation.ocsp.locked' key to the deployment.properties file.