With the fast pace in technology such as smart phones, smart watches, tablets, browsers, and social media, the senior community has become an attractive target for on-line hackers. The risk of losing money, reputations, and even identity is a real and impending danger for everyone. Yet, there's no option to stay off line while business is increasingly being conducted on-line. This class explores the dangers and offers the techniques to stay safe on-line and to protect privacy. This class will provide the details on how to stay safe in the Microsoft, Google, and Apple ecosystems.