Eavesdropping
From Capsil Wiki
In wireless sensor network communications,an adversary can gain access to private information by monitoring transmissions between nodes. For example in a healthcare scenario, the eavesdropper may deduce from the activity on the network, the state of health of the person using the system and for instance the potential for there to be high value drugs in the home. Encrypting sensor node communications partly solves eavesdropping problems but requires a robust key exchange and key distribution scheme. The scheme must be simple for the network owner to execute and feasible for the limited sensor node hardware to implement (compromise between cost of hardware nodes and security). Robust routing protocols are one solution to this problem. Another solution is multipath routing, which routes parts of a message over multiple disjoint paths and reassembles them at the destination. Efficient discovery of the best disjoint paths to use for such an operation is certainly a research challenge
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