The term 'JS' is used in an F-Secure detection name as a as a platform identifier to indicate a JavaScript program with potentially malicious routines or malware-like code.
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
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.
Note: You need administrative rights to change the settings.
JavaScript (JS) is a popular scripting language commonly used on Web pages to add interactivity to its elements. JavaScript is only loosely related to the Java programming language.
For a representative example of a JavaScript malware, see:
The detection may also identify a HTML or CHM document containing suspicious JavaScript code. In this case, the malicious script is most commonly an exploit.
For more information about JavaScript, please see Terminology: JavaScript.