NED, the first polymorphic generator from USA, appeared at approximately the same time as TPE. According to the generator's documentation, it was released in October, 1992. Nowhere Man is credited as being the author of this generator, but there have been suspicions that it is actually written by some other programmer. Nowhere Man is the author of NuKE's Virus Creation Laboratory, the VCL.
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.
Unlike most other polymorphic generators, NED was distributed as source code. This, of course, makes it easier for other virus creators to modify the generator, but so far only a single version of NED has been found. The generator's documentation expressly forbids its distribution outside NuKE itself, but it has obviously been in wide distribution.
NED version 0.90B takes up 1355 bytes. It is known to have been linked to two different viruses.