By Yang Xiao

Sensor networks fluctuate from conventional networks in lots of points together with their restricted power, reminiscence house, and computational power. those differentiators create certain safeguard vulnerabilities.Security in Sensor Networks covers all facets of the topic, serving as a useful reference for researchers, educators, and practitioners within the box. Containing 13 invited chapters from the world over famous safeguard specialists, this quantity info assaults, encryption, authentication, watermarking, key administration, safe routing, and safe aggregation, place, and cross-layer. It deals perception into attacking and protecting routing mechanisms in advert hoc and sensor networks, and analyzes MAC layer assaults in 802.15.4 sensor networks.

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7 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 standard and describe a number of possible attacks at the MAC layer. 4 standard, and we show that such attacks can introduce serious disruption. We also discuss some remedial measures that may help defend against those attacks, or at least alleviate their impact on the performance of the network.

The spam attacks are more jeopardous to sensor networks. This is because in a sensor network, environmental data collected by sensors will all be transmitted to the remote sink. A spam attacker can thus generate a lot of dummy messages to the sink to consume energies of relayed sensors, especially those close to the sink. Once the energies of these sensors are exhausted, the sink will never receive data from the sensor network. In this case, the whole sensor network is destroyed, even though most of sensors are alive.

2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 MAC . . . . . . . . . . . . . . . . . . . 1 The CSMA-CA Algorithm . . . . . . . . . . . . . . . . . . . 2 On Uplink and Downlink Communication . . . . . . . . . 3 Security Services and Suites . . . . . . . . . . . . . . . . . 4 MAC Layer Attacks . . . . . . . . . . . .

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