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Windows Defender detects and removes this threat.
This threat uses a Java vulnerability to download and run files on your PC, including other malware.
It runs when you visit a hacked or malicious website and you have a vulnerable version of Java.
The following versions of Java are vulnerable:
- Java Development Kit and Java Runtime Environment 7 Update 10 and earlier
To check if you're running a vulnerable version of Java:
- In Control Panel, double-click Programs.
- If Java is installed you will see it in the list of installed programs. Click it to open the Java Control Panel.
- On the General tab, click About to see which version of Java you have installed.
You may get an alert about this threat even if you're not using a vulnerable version of Java. This is because we detect when a website tries to use the vulnerability, even if it isn't successful.
Use the following free Microsoft software to detect and remove this threat:
You should also run a full scan. A full scan might find other, hidden malware.
Make sure you install all available Java updates. You can read more about this vulnerability and download software updates from these links:
You should remove older versions of Java, as keeping old and unsupported versions of Java on your PC is a serious security risk:
If you continue to get alerted about this threat, deleting your temporary Java files can help:
It's also important to keep your other software up to date:
Clear the cache
You should delete your temporary Internet files so your security software doesn't continue to detect this threat:
Get more help
You can also see our advanced troubleshooting page for more help.
If you’re using Windows XP, see our Windows XP end of support page.