Guillain-Barre syndrome (GBS) is a disease of the peripheral nervous system characterized by acute areflexic paralysis and albuminocytological dissociation on cerebrospinal fluid (CSF). Fulminant GBS mimicking clinical brain death has been described in the literature and has overall poor prognosis since patients either die or are left with severe disability. We describe a case of fulminant GBS mimicking clinical brain death where patient died of unexplained asystolic cardiac arrest related to severe dysautonomia. Dysautonomia is a marker of poor prognosis in this patient population.

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Wireless Sensor Networks refers to a multi-hop packet based network that contains a set of mobile sensor nodes. Every node is free to travel separately on any route and can modify its links to other nodes. Therefore, the network is self-organizing and adaptive networks which repeatedly changes its topology. The relations among nodes are restricted to their communication range, and teamwork with intermediate nodes is necessary for nodes to forward the packets to other sensor nodes beyond their communication range. Sensor networks are often deployed in unattended and hostile environments. Due to the lack of physical protection, sensor nodes are subject to node compromise. After compromising one or multiple sensor nodes, the adversary may launch various attacks to disrupt the in-network communication. It is also called packet dropping. Packet dropper and modifier are common attack that can be launched by an adversary to disrupt communication in wireless multi-hop sensor. Many techniques can be used to mitigate and tolerate such attacks but very few can effectively and efficiently identify the intruder.