The Internet of Things (IoT) presents unprecedented opportunities for building smart society. Big data collected from numerous “Things”, connected to different interfaces and locations, facilitate smarter decision making and personalised services. Although all the hope of anticipated benefits from IoT, security remains a big challenge to overcome. Manufacturers are yet shipping IoT devices with security flaws, which put users or even the other parts of our connected cyber world at risk. Those vulnerable IoT devices would be easily exploited to launch massive cyber attacks to other online services or IT infrastructures. All the privacy, robustness and security issues are challenging the movement towards smart society.