Siebel CRM and Java 7 Update 51
Starting with Java 7 Update 51, Java has enhanced security model to make user system less vulnerable to external exploitation. For instance, if you have recently applied JRE version 1.7.0_51-b13 onto your Siebel environment you may want to review the following alert that was recently published:
How to prevent "Error Click for details" for blocked Siebel Java applets when running Java version 7U51 released in January 2014 (Note 1618877.1)