摘要:Wireless ad-hoc network is a decentralized wireless network that does not have a permanent structure. Client devices are connected to form wireless network. Each node in the network to forward data from one node to another. Based on the connectivity of the network, the node dynamically determinewhich node to forward the data main threats for a secure information exchange in ad hoc networks are the unauthorized access to private data and interference in the operation of equipment and devices in order to disrupt their activity and even disable them.A possible response to these threats is the spread of independent and decentralized networks where each device is a full participant and all share responsibility for safety and security of the network. This paper provides a comprehensive overview of possible attacks. It first explores the reason and security issues in wireless ad hoc network mainly MANET and FANET, then it analyzes various types of most common threats, attacks and unresolved problems that face these types of network. After that it presents the popular security protocols to solve attack problem.