How do I control when an untrusted applet or application runs in my web browser
? ... or a certificate that has not been issued by a trusted Certificate Authority) will
run... the applications to run, that would normally be blocked by security checks.
These security levels apply to running Java in the browser, which includes plugin
applets, ... If the app is not automatically blocked, the user has the option to block
the app, ... this file, so make the file read-only to prevent your changes from being
overwritten. ... The user can select medium, high or very high security settings.