Oracle says this pop-up is designed to warn users of potential security risks, such as using old versions of Java or running applet code that is not signed from a trusted Certificate Authority.

“The Java 7u21 release introduces changes to security messages related to running Java applets and applications,” Oracle said in a technical document that explains the changes.

As we noted when Java 7 Update 11 was released, Oracle changed the default Java Security Level setting from Medium to High, meaning the user is now always prompted before any unsigned Java applet ...

In April, Oracle instituted a number of changes starting with Java 7u21. The new update introduced prompts warning users that an unsigned applet could potentially harm the user’s computer.

Apps Oracle ships Java 7 Update 11 with vulnerability fixes, increased security level for Java applets January 14, 2013 - 12:20 am ...

Sun Microsystems, which was acquired by Oracle in 2010, introduced Java applets in 1995 and the technology was briefly popular with scientists and educators, who used them to create things such as ...

The much-maligned Java browser plugin, source of so many security flaws over the years, is to be killed off by Oracle. It will not be mourned. Oracle, which acquired Java as part of its 2010 ...