The concept of the Internet of Things (IoT) has evolved over time. The introduction of the Internet of Things and Services into the manufacturing environment has ushered in a fourth industrial revolution: Industry 4.0. It is no doubt that the world is undergoing constant transformations that somehow change the trajectory and history of humanity. We can illustrate this with the first and second industrial revolutions and the information revolution. IoT is a paradigm based on the internet that comprises many interconnected technologies like RFID (Radio Frequency Identification) and WSAN (Wireless Sensor and Actor Networks) to exchange information. The current needs for better control, monitoring and management in many areas, and the ongoing research in this field, have originated the appearance and creation of multiple systems like smart-home, smart-city and smart-grid. The IoT services can have centralized or distributed architecture. The centralized approach provides is where central entities acquire, process, and provide information while the distributed architectures, is where entities at the edge of the network exchange information and collaborate with each other in a dynamic way. To understand the two approaches, it is necessary to know its advantages and disadvantages especially in terms of security and privacy issues. This paper shows that the distributed approach has various challenges that need to be solved. But also, various interesting properties and strengths. In this paper we present the main research challenges and the existing solutions in the field of IoT security, identifying open issues, the industrial revolution and suggesting some hints for future research.
The massive increase of spam is posing a very dangerous and serious threat to our email and social networks. It is pertinent and imperative to step up the spam detection approach and strategies in email and social networks. In recent years online spam has become a major problem for the sustainability of the internet globally, Excessive amounts of spam are not only reducing the quality of information available on the email and social networks but also creating concern among the users of email and various social networks. This paper aims to analyze existing research works in spam detection strategies and approaches, state of art, the phenomenon of spam detection, to explore the rudiment of spam detection, to proposed detection scheme and potential online mitigation schemes. The paper will surveys various anti spam strategies for email and social networking. In the literature we have studied that many anti spam strategies have been discovered and work on but they are still open challenges to these different approaches and techniques, while some of them are highlighted in this articles. It is very important to work on spam detection and reposition it for the better of the world..
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