Exploit:Java/Majava.B identifies malicious files that exploit vulnerabilities in the Java Runtime Environment (JRE).
Generic detections are broad patterns of code or behavior that are used by security software to identify programs or files. If you suspect the detected file was incorrectly identified, go to: Removal: Resolve a False Positive.
Once detected, the F-Secure security product will automatically handle a harmful program or file by either deleting or renaming it.
Java exploits typically target known vulnerabilities in the Java Runtime Environment; to prevent successful exploitation, please ensure you install the latest updates available for Java and/or remove any old, unnecessary installations.
To ensure you have the recommended version of Java installed on your system, please refer to the vendor's Verify Java version page.
Security programs will sometimes unintentionally identify a clean program or file as malicious if its code or behavior is similar to a known harmful program or file. This is known as a False Alarm or False Positive (FP).
In most cases, a False Positive is fixed in a subsequent database release.
Usually, updating your F-Secure security product to use the latest database is enough to resolve the issue.
If you suspect a detected file is a False Positive, you can check by first updating your F-Secure security product to use the latest detection database updates, then rescanning the file.
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it to F-Secure Labs for re-analysis.
NOTE If the file was moved to quarantine, you will need to first collect the file from quarantine before you can submit it.
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Microsoft also provides enterprise-level instructions for excluding files from scanning by antivirus software.
Find the latest advice in our Community Knowledge Base.
See the manual for your F-Secure product on the Help Center.
Submit a file or URL for further analysis.
Exploit:Java/Majava.B is a generic detection that identifies exploit files used to target and exploit vulnerabilities in the Java Runtime Environment (JRE).
If successfully used, exploits can provide an attacker with a wide range of possible actions, from viewing data on a restricted-user database to almost complete control of a compromised system.
The exploit files may be delivered by other malware, such as the Blackhole exploit kit.
For more information, please see: