Wireless Sensor Networks (WSNs) are susceptible to Sybil attacks in which malicious node creates a huge number of fake identities in order to gain an excessively high advantage through a Byzantine method. A Sybil node using only one physical device may generate random number of additional node identities and can be used to disrupt normal functioning of the WSN, such as multipath routing which i...

Sybil attack is one of the most severe attacks in the vast domain of ad-hoc network. Mobile Ad-hoc Network (MANET) has to face this attack in its different application areas due to its inherent properties like mobility, absence of centralized infrastructure and limited resources. In this paper the threats of Sybil attacks in different environment of MANET is discussed briefly and taxonomy of va...

The Delay Tolerant Networks (DTNs) are especially useful in providing mission critical services including emergency scenarios and battlefield applications. However, DTNs are vulnerable to wormhole attacks, in which a malicious node records the packets at one location and tunnels them to another colluding node, which replays them locally into the network. Wormhole attacks are a severe threat to ...

In VANET, many attacks rely on having the attacker generate multiple identities to simulate multiple nodes, this is called the Sybil attack. By creating a large number of nameless identities, using them to gain large influence to the system. Utilizing social relationship among trajectories according to the similarity definition of two trajectories, Footprint can recognize and therefore dismiss ...

In sensor networks, nodes cooperatively work to collect data and forward it to the final destination. Many protocols have been proposed in the literature to provide routing and secure routing for ad hoc and sensor networks, but these protocols either very expensive to be used in very resource-limited environments such as sensor networks, or suffer from the lack of one or more security guarantee...

Routing Attacks are a serious threat to communication in tactical MANETs. TOGBAD is a centralised approach, using topology graphs to detect such attacks. In this paper, we present TOGBAD’s newly added wormhole detection capability. It is an adaptation of a wormhole detection method developed by Hu et al. This method is based on nodes’ positions. We adapted it to the specific properties of tacti...

Although wireless channel comparison based techniques have been shown to defeat Sybil attacks in wireless environments, most assume single-input single-output (SISO) models for the radio system. We consider extending wireless Sybil defenses to multi-input multi-output (MIMO)

Wormhole attack is considered one of the most threatening security attacks for mobile ad hoc networks (MANET). In a wormhole attack, a tunnel is setup in advance between two colluders. The colluders record packets at one location and forward them through the tunnel to another location in the network. Depending on whether or not the colluders are participating in the network functions, the wormh...