Online social networks (OSN) are a permanent presence in today's personal and
professional lives of a huge segment of the population, with direct consequences to offline …

In recent years, Blockchain has attracted tremendous attention due to its salient features
including auditability, immutability, security, and anonymity. Resulting from these salient …

Blockchain technology is useful with the record kee** of digital transactions, IoT, supply
chain management etc. However, we have observed that the traditional attacks are possible …

Distributed systems without trusted identities are particularly vulnerable to sybil attacks,
where an adversary creates multiple bogus identities to compromise the running of the …

Distributed systems without trusted identities are particularly vulnerable to sybil attacks,
where an adversary creates multiple bogus identities to compromise the running of the …

Sybil accounts are swelling in popular social networking sites such as Twitter, Facebook etc.
owing to cheap subscription and easy access to large masses. A malicious person creates …

Peer to peer (P2P) e-commerce applications exist at the edge of the Internet with
vulnerabilities to passive and active attacks. These attacks have pushed away potential …

Abstract In cooperative Peer-to-Peer (P2P) networks, a number of users, called Free-riders,
try to receive service from others without cooperating with them. Some others, called Sybil …

A diffusion auction is a market to sell commodities over a social network, where the
challenge is to incentivize existing buyers to invite their neighbors in the network to join the …

Sybil attack is an attack in which the identities of the node are subverted and the large
number of pseudonymous identities is produced to gain the access of the network. In this …