The Internet of things (IoT) is the network of physical devices, vehicles, home appliances and other items embedded with
electronics, software, sensors, actuators, and connectivity which enables these objects to connect and exchange data. Internet-of-
Things (IoT) are anywhere in our everyday life. Though, all those advantages can come of enormous risks of confidentiality,
security and integrity issues. To provide better security of the IoT devices, several studies have been showed to overcome those
problems and find a optimal solutions to exclude those threats. The survey consists of three categories. The first category will
explore the most significant disadvantages of IoT devices and its solutions. The second category will present the various types of
IoT attacks. The third segment will focus on the Common attacks and countermeasures.
Keywords:Internet-of-Things (IoT), Attacks, privacy, security, WSN,RFID.