Security threats and possible countermeasure in digital healthcare

With the rise of multifaceted devices and advancements in wireless communication, the reputation of mobile ad hoc network (MANET) is growing with the rising number of widespread applications such as digital healthcare. The interaction between digital healthcare and MANET presents several challenges. Providing security to such networks is challenging. This paper will investigate how collaborative attacks constitute a security threat. The collaborative attacks that will be investigated are gray hole and wormhole attacks. In addition, the investigation will cover the categories of collaborative attacks. Experiments were simulated for the different categories of the collaborative wormhole and gray hole attacks. To understand the severity of the attacks, experiments were conducted using ad hoc on-demand distance vector (AODV) routing protocol under various ad-hoc network conditions such as: packet delivery; routing overhead and endto-end delay routing. The network conditions were analyzed at each node level, using their node identity (ID) to indicate the presence of an attack within a network, and finally, some suggestions were made about what might be done to defend against the attack.