Children today are completely at home in the digital space. They use digital diaries and textbooks at school, communicate via instant messaging, play games on mobile devices (not to mention PCs and consoles), and create mini masterpieces on tablets and laptops. This total immersion in the digital universe is a concern for many parents, but if they want their child to spend time online safely and usefully, they must not only understand the basic concepts of digital security and have a grasp of the threats, but also be able to explain them to their kid.