All other applications are allowed to run with security prompts. Only unsigned applications that request all permissions are blocked. Medium (removed from Java 8 Update 20 and later versions)

Applications are also allowed to run with security prompts when the revocation status of the certificate cannot be checked. Applications that are signed with a valid or expired certificate and include the Permissions attribute in the manifest for the main JAR file are allowed to run with security prompts. This is the minimum recommended (and default) security level setting. All the 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. This is the most restrictive security level setting.

Security levels in the Java Control Panel Very High Java Control Panel - Java 8u20 and later versions

Click OK to save changes made to the Java Control Panel.

In the Java Control Panel, click on the Security tab.

» Mac OS X Setting the Security levels through the Java Control Panel The exception site list provides users with the option of allowing the same applets that would have been allowed by selecting the Medium option but on a site-by-site basis therefore minimizing the risk of using more permissive settings. Only High and Very High levels are available. Starting with Java 8 Update 20, the Medium security level has been removed from the Java Control Panel. Starting with Java 7 Update 51, applets that do not conform with the latest security practices can still be authorized to run by including the sites that host them to the Exception Site List.

Untrusted Java applications will be blocked so they cannot run (VERY HIGH).

You are prompted before an untrusted java application is run (MEDIUM or HIGH) or.

Setting the security level within the Java Control Panel will determine whether an application that is digitally signed by an unknown publisher, or a certificate that has not been issued by a trusted Certificate Authority) will run if they are included on a web page. Java 7u10 introduced the ability to manage when and how untrusted Java applications (i.e. Setting the security level within the Java Control Panel » Applications signed with MD5withRSA or MD5withDSA » Setting the security level within the Java Control Panel How do I control when an untrusted applet or application runs in my web browser?

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