• Saylee Gharge
• Yash Desai
• Akshata More
• Bhakti Parab
• Saharsh Mindewar

Wireless sensor networks provide a platform to collect and monitor data about a particular physical quantity. When Sensor nodes are deployed over a large area, they collect sensor data and transmit it to the sink node through wireless media. With large-scale deployments, security is becoming a vital concern in the WSN. Jamming attacks are a subgroup of Denial of service (DoS) attacks wherein the malicious nodes interfere with the network communication. The main contribution of this article is to discuss the types of jammers and jamming techniques. This paper describes the optimal placement of jammers and different existing technologies for localizing jammers in the network. Jamming detection techniques can remarkably enhance jamming protection only when used together with other countermeasures by providing valuable data. Some countermeasures of jamming include use of directional antennas instead of Omni-directional antennas and the application of high-transmission power on jammed channels providing less jamming.

Wireless Sensor Networks, Jamming, Denial of Service, Placement of jammers, Countermeasures.

"AN OVERVIEW OF JAMMING ATTACKS AND COUNTERMEASURES IN WSN", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 10, page no.175-180, October-2021, Available :http://www.jetir.org/papers/JETIRFD06025.pdf

"AN OVERVIEW OF JAMMING ATTACKS AND COUNTERMEASURES IN WSN", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 10, page no. pp175-180, October-2021, Available at : http://www.jetir.org/papers/JETIRFD06025.pdf