The Department of Homeland Security had issued a warning and said attackers could trick targets into visiting malicious websites that would infect their PCs with software capable of exploiting the bug in Java.
So, here is what you can do to avoid you system mess up until they find a full fix. All you need is to disable you Java plug-in in your browser.
Disabling Java Plug-In in Mozilla Firefox:
1. Click on the Firefox, located at left upper corner of the web browser and go to “Add-ons”.
or press “Alt“, menu bar pops-up, then go to Tools > Add-ons, or you can simply use shortcut key “Ctrl+Shift+A” to access addon (extension) manger.
2. Now, click on “Plugin“which is located left at the bottom of the side bar and disable the Plugin which starts with “Java (TM) Platform” .
NOTE: Requires browser restart for the actions to take effect.
Disabling Java Plug-In in Google Chrome:
1. Type “chrome://plugins/“ in chrome URL. Find Java (TM) and disable it.
Disabling Java Plug-in in Opera:
1. Click on the Opera, located at left upper corner of the web browser and go to “Settings” >> “Preferences ..” Or press “Ctrl + F12”.
Disabling Java Plug-in in Internet Explorer:
1. Go to Tools (Alt + X) and click on Manage Add-ons and search for “Oracle America Inc” and disable the Java(tm) Plug-in.