  The promise of quantum computing is not speeding up conventional computing
rather delivering an exponential advantage for certain classes of problems,
with profound implications for cybersecurity for instance. With the advent and
development of quantum computers, cyberspace security can surely become the
most critical problem for the Internet in near future. On contrary, prosaic
quantum technology can be promising to transform cybersecurity. This research
aims to synthesize basic and fundamental studies concerning quantum
cybersecurity that can be emerged both as a threat and solution to critical
cybersecurity issues based on a systematic study. We provide a comprehensive,
illustrative description of the current state-of-the-art quantum computing and
cybersecurity and present the proposed approaches to date. Findings in quantum
computing cybersecurity suggest that quantum computing can be adopted for the
betterment of cybersecurity threats while it poses the most unexpected threats
to cybersecurity. The focus and depth of this systematic survey not only
provide quantum and cybersecurity practitioners and researchers with a
consolidated body of knowledge about current trends in this area but also
underpins a starting point for further research in this field.
