Abstract
Security is relevant for many
sensor network applications. Wireless Sensor
Networks (WSN) is often deployed in hostile
environments as static or mobile, where an
antagonist can physically capture some of the
nodes, once a node is captured, antagonist
collects all the credentials like keys and identity
etc. the attacker can re-program it and repeat
the node in order to eavesdrop the transmitted
messages or adjustment the functionality of the
network. Identity burglary leads to two types
attack: clone and Sybil. In particularly a
catastrophic attack against sensor networks
where one or more node(s) illegitimately claims
an identity as replicas is known as the node
replication attack. The replication attack can be
enormously injurious to many important
functions of the sensor network such as routing,
resource allocation, mis-behavior detection, etc.
This paper inspect the threat posed by the
replication attack and several novel techniques
to detect and defend against