Is Java Enabled? Java Detector brought to you by Bugcrowd

Security vulnerabilities in Java put your computer at RISK!

The Department of Homeland Security, USCert, and many computer security experts have recommended disabling or uninstalling Java completely as a critical step to staying safe online. Is Java Enabled tells you if Java is installed and/or enabled, and shows you how to disable and/or uninstall Java from your computer.

Note: It's a touch ironic, but your browser might ask you to install Java when you run the test. If you don't want it (and we assume that's why you're here) the answer is a resounding "No".

It's easy!

Do you have Java installed? Are you affected? Did uninstalling it work? To find out

You are running on with the Java plug-in .

Ruh-roh!

The Java version is currently installed and enabled. You may be vulnerable to Java security vulnerabilities. We recommend you disable or uninstall Java from your system.

Disabling the Java Browser plug-in in Firefox (Any OS)

To disable the Java Browser plug-in inside firefox, do the following

  1. Open the Add-ons Manager via the Tools menu
  2. Click on the plugins tab on the left hand side
  3. Look for the Java plug-in entry which may be called Java Applet plug-in [version number] or Java(TM) Platform [edition version number]
  4. Next to this entry, click on the button that says Disable

That's all there is to it. To confirm you've correctly disabled the plug-in, re-run this test.

Disabling Java in Safari (Mac OS X)

To disable Java inside Safari, do the following

  1. Open the Safari preferences dialog by pressing ⌘ and ',' together or by opening it from the Safari menu
  2. Select the Security tab
  3. Unselect the check box marked as Enable Java

That's it! To confirm you've correctly disabled the plug-in, re-run this test.

Disabling the Java Browser plug-in in Opera (Any OS)

To disable the Java Browser plug-in inside Opera, do the following

  1. Open a new tab
  2. In the address bar type: opera:plugins
  3. Look for the Java plug-in entry which may be called Java Applet plug-in [version number] or Java(TM) Platform [edition version number]
  4. Click on the link that says Disable that is located next to this entry

That's it! To confirm you've correctly disabled the plug-in, re-run this test.

Disabling the Java Browser plug-in in Chrome (Any OS)

To disable the Java Browser plug-in inside Chrome, do the following

  1. Open a new tab
  2. In the address bar type: chrome://plugins
  3. Look for the Java plug-in entry which may be called Java Applet plug-in [version number] or Java(TM) Platform [edition version number]
  4. Click on the link that says Disable that is located underneath this entry.

That's all there is to it. To confirm you've correctly disabled the plug-in, re-run this test.

Disabling Java in Internet Explorer (Windows)

There is no way of disabling Java directly in Internet Explorer, instead an external tool must be used. To disable Java inside Internet Explorer, do the following

  1. Open the Java Control Panel:
    • In Windows versions up to and including Windows XP, click Start, open the Control Panel and double-click the Java icon
    • In Windows Vista or Windows 7, click Start, open the Control Panel, in the Search bar enter the text Java and open the Java Control Panel
    • In Windows 8 press the Windows Logo + W keys together to launch the Search charm, in the Search bar enter the text Java and open the Java Control Panel
  2. Select the Security tab
  3. At the top of the tab there is a check box marked Enable Java Content in the Browser
  4. Make sure this check box is unselected and click OK

That's all there is to it. To confirm you've correctly disabled the plug-in, re-run this test.

Good news!

Good job! The Java Browser plug-in is currently disabled. Make sure you check any other browsers you may have installed.

Bugcrowd is the most cost effective way to get high-quality security testing done on web and mobile applications. If you'd like to know more, get in touch via bugcrowd.com or send us an email hello@bugcrowd.com.

Hacked together by OJ.
Please report any bugs or issues to hello@bugcrowd.com.