Fault Tolerant Strategy: A Tool for Militating against Masquerading Threat in Banking Industry

Abstract

Bank critical systems are systems that are not permitted to fail during their operation schedule; they are expected to perform operation 24 hours a day without any interruption. This trailed that all its constituent embedded systems (nodes) must be optimized to an appreciable degree of reliable functionality. This study focused on how banks service delivery can be sustained uninterruptedly in order to serve their customers optimally and guard against cost and disasters which may result from computer system failure during operation. The requirement constraints of embedded systems application design make software-defect masquerading faults inevitable as the nodes collaboratively relate to ensure a dependable service delivery of the critical systems. This is because embedded systems networks are closed network and therefore masquerading faults only emanate from defects in the software of the nodes. To remedy this attack that threats seriously the critical systems reliability and dependability, an algorithm was proposed. The proposed solution involves three main stages: the pre-authentication stage, authentication stage and the auto-repair stage which ensure the system auto-reparability from faulty state.  The network simulation of the proposed solution was conducted using Matlab and the results shows that the reliability of fault-tolerant critical system were found to be 0.9999 all through the trial. This is so because all the starting nodes survive till the end of the critical system’s operation.