 While useful and still in use, signature detection method has also become more limited, due to the development of new threats which exploded around the turn of the century and are continuing to emerge all the time.To counter this problem, the heuristic model was specifically designed to spot suspicious characteristics that can be found in unknown, new viruses and modified versions of existing threats as well as known malware samples.Cybercriminals are constantly developing new threats, and heuristic analysis is one of the only methods used to deal with the huge volume of these new threats seen daily.