Cyberspace touches practically everything and everyone when many everyday communications depend on information communication technologies. This new wave of connectivity is going beyond tablets and laptops; to connected cars and buildings; TVs and game consoles; and smart meters and traffic control. As we are critically dependent on cyberspace, it is inherently insecure and there will always be attempts to exploit weaknesses to launch cyberattacks. The cyber threat impacts the whole of our society, so everyone has a part to play in combating cybercrimes. This book is divided into five chapters, which explain how digital technology transforms societies, why cyberattacks escalate, what the challenges in cybersecurity are, how nations address global cyber risks, and how organizations defend against cyberattacks.