A   B   C   D   E   F   H   I   K   M   O   P   R   S   T   U   V   W   Z   

F

false negative

False Negative-When a file is not identified as being infected when it in fact is.

false positive

False Positive-When a file is identified as being infected with something but is not. Often due to heuristic scanning.

freeware

Freeware-Software that is given away for free. Often times a company will give away a version of their software to entice you into purchasing a more enhanced version of the software. Often you can find simple little full-version programs online for free too.