Adaptive multi-factor authentication protocol for sensitive remote connections

National cyberspace that is secure and trusted is required for the growth and prosperity of any country. In this age of big data, public organizations are facing many information security challenges related to the expansion in the use of technology. Additionally, cyber threats are in continuous development which requires proactive enhancement of the national cybersecurity to protect information technology systems. In this paper, we deal with the enhancement of authentication policies in access to national information systems. We propose an adaptive authentication protocol that includes both passwords and biometric factors in the authentication. Two main phases are proposed: initial and periodic authentication. The performance of our protocols is proven by simulation.