222 Copyright © 2014, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. Chapter 10 Security and Privacy in Mobile Ad hoc Social Networks ABSTRACT In this chapter, first, the authors briefly introduce the two new systems “MASN-OLSR” (Mobile Ad Hoc Social Networks with OLSR) and “MASN-AODV” (Mobile Ad Hoc Social Networks with AODV). Then they choose wormhole and black hole attack methods, because they are not completely solved, especially in a setting where MASN is used as OLSR or AODV routing protocol. The authors give a definition of the wormhole and black hole attacks on an ad hoc network using OLSR or AODV as routing protocol and then examine the various existing proposals in the literature to overcome this attack. With an analysis of these methods, they then determine the advantages and disadvantages of each of these new systems. INTRODUCTION Since their introduction, the wireless local area networks have attracted the interest of profes- sionals, faced with the needs of mobility and network connectivity to their organization. 802.11 networks, standardized by the IEEE in 1997, has rapidly become until, in some cases, replace tra- ditional wired networks like Ethernet. Since their arrival on the market, the steady evolution of their performance and lower their cost of acquisition helped accelerate their dissemination. The IEEE 802.11 provides two modes: infra- structure mode and ad hoc mode. Infrastructure mode, also called cellular mode, uses a topology built around fixed access points. The latter is re- sponsible for managing exchanges between mobile nodes located in their area transceiver. Multiple Mohamed Amine Ferrag University of Badji Mokhtar – Annaba, Algeria Mehdi Nafa University of Badji Mokhtar – Annaba, Algeria Salim Ghanemi University of Badji Mokhtar – Annaba, Algeria DOI: 10.4018/978-1-4666-4691-9.ch010