Security in Wireless Sensor Networks

Introduction

• starting of the 90s, researchers waged big care about SWN’s.

• We use the term sensor network to refer to a heterogeneous system combining tiny sensors and actuators with general purpose computing elements

SENSOR NETWORK SECURITY ISSUE

• Authenticity - it makes possible that the messagereceiver is capable of verifying the identity the message sender, hence preventing that likely intruder nodes inject malicious data into thenetwork.• Confidentiality - it ensures that the content of themessage is accessed only by authorized nodes.• Integrity - it guarantees that should a message have its content modified during the transmission, the receiver is able to identify these alterations.

security must be integrated into every node of the system:

• A. Link Layer Security Motivation• B. Routing Security Motivation

SECURITY REQURIEMENT

• The goal of security services in WSNs is to protect the information and resources from attacks and misbehavior. The security requirements in WSNs include many steps to insure that the date will be received without any attacks.

THREAT MODEL AND ATTACKS

• That attach happens when a person or organization what to know the information that are going in the network.