Network security poses a challenge to wireless sensor networks (WSNs) achieving its true potential. It is hard to tackle due to operational constraints of networks. Worms have become an emergent... Show More

Network security poses a challenge to wireless sensor networks (WSNs) achieving its true potential. It is hard to tackle due to operational constraints of networks. Worms have become an emergent threat to the wireless networks. The spread of worms in the network is epidemic in nature. This article proposes a novel mathematical model with pre-vaccination and quarantine for study of worm propagation dynamics in WSN that is based on epidemic model. Further, the authors have devised an expression to determine threshold communication radius and node density. The objective of this proposed model is to study the propagation dynamics of worms in wireless sensor networks. Through the model, investigate the stability condition of networks in the presence of malicious codes. The experimental studies indicate that the proposed model outperforms in terms of security and energy efficiency over other existing models. It is a leap toward worm-controlling mechanisms in sensor networks. Finally, the control mechanism and performance of the proposed model is validated through extensive simulation results.

Secure authentication is a vital component for device security. The most basic form of authentication is by using passwords. With the evolution of smart devices, selecting stronger and unbreakable... Show More

Secure authentication is a vital component for device security. The most basic form of authentication is by using passwords. With the evolution of smart devices, selecting stronger and unbreakable passwords have become a challenging task. Such passwords if written in native languages tend to offer improved security since attackers having no knowledge of such scripts finding it hard to crack. This article proposes two zone-wise feature extraction approaches - zone-wise structural and directional (ZSD) and zone-wise slopes of dominant points (ZSDP), to recognize online handwritten script and word in four major Indic scripts - Devanagari, Bengali, Telugu and Tamil. These features have been used separately and in combination in HMM-based platform for recognition purpose. The dimension reduction of the ZSD-ZSDP combination with factor analysis has shown the best performance in all the four scripts. This work can be utilized for setting up the authentication schemes with the Indic scripts' passwords thus rendering it difficult to crack by hackers having no knowledge of such scripts.

In this article, the authors propose a DDoS mitigation system through access list-based configurations, which are deployed at the ISP (Internet Service Provider's) edge routers to prohibit DDoS... Show More

In this article, the authors propose a DDoS mitigation system through access list-based configurations, which are deployed at the ISP (Internet Service Provider's) edge routers to prohibit DDoS attacks over ISPs' networks traffic. The effectiveness of the proposed system relies heavily on the willingness of ISPs in implementing the system. Once each ISP implements the system, most attacks can easily be stopped close to their point of origin. The main challenge is to implement such a system with the fixed amount of memory and available processing power with routers. A coordinated effort by participating ISPs filters out attacks close to their source, reducing the load on other routers. The suspicious traffic is first filtered out based on their source IP address. The authors also implemented the WRED algorithm for their case and conduct GNS3 experiments in a simulated environment.

Smart mobile pay applications on smart devices have been considered as the most efficient and secure mode of contactless payment. To safeguard customer credit/ debit card details, testing of mobile... Show More

Smart mobile pay applications on smart devices have been considered as the most efficient and secure mode of contactless payment. To safeguard customer credit/ debit card details, testing of mobile pay solutions like Samsung Pay is most important and critical task for testers. Testing of all the test cases is very tedious and a time-consuming task, therefore optimization techniques have been used to identify most optimized test paths. In this article, a hybrid genetic and tabu search optimization (HGTO) algorithm is proposed to secure optimized test paths using activity diagram of the smart Samsung Pay application. The proposed approach has been implemented using C++ language on the case study of the Smart Samsung Pay and an online airline reservation system. The experimental results show that the proposed technique is more effective in automatic generation and optimization of test paths, as compared to a simple genetic algorithm.

The computational complexity of the next generation internet (NGI) is increasing at a faster rate. Due to the large scale of ubiquitous devices, effective and secure communication and addressing... Show More

The computational complexity of the next generation internet (NGI) is increasing at a faster rate. Due to the large scale of ubiquitous devices, effective and secure communication and addressing mechanism is vulnerable to several threats. Apart from resource constraints of the devices, the unknown topology of the network and the higher risk of device capture make the key management a more challenging task in NGI. In this context, a novel attack resistant and salable key management scheme must be in place to enable end-to-end secure communication. In the first part of the article, is a detailed analysis of various threats along with behavioral modeling of attack. Further, this article presents comprehensive literature survey and the gap analysis. The proposed key management scheme has been evaluated in two scenarios viz. centralized and decentralized and its formal security analysis also proves that it is safe from replay attack. The proposed key management scheme has been evaluated with a performance metric like delay and the results shows that it is salable in nature.