Rapid release virus definitions have undergone basic quality assurance testing by Symantec Security Response. The primary focus of these definitions are the rapid detection of newly emerging threats and they may be augmented later with more robust detection capabilities. While Symantec Security Response makes every effort to ensure that all virus definitions function correctly, you should understand that rapid release-quality virus definitions do pose some risks such as the higher potential for false positives. Rapid release definitions are most useful for perimeter defenses or for all protection tiers as a means of mitigating fast spreading virus outbreaks.