The day by day improvement of digital devices makes digital crime way more complicated than it was back in 1986. Nowadays crimes are happening over cloud which mandates cross national forensic investigation. It is therefore an essential demand for the security experts to realize their strengths in investigation of complex digital crimes via studying the history and current trends in the field. Specialists need to understand that digital forensics is not about looking at the past because of having an attack history; neither looking at the present in fear of being attacked; nor about looking at the future with uncertainty about what might befall us but about to being ready all the times for the moving target.