Book excerpt: A message received on a social media platform from a stranger or a call received from an unknown number can bring in numerous dangers if taken for granted and not dealt as appropriate.You also might have heard about killer online 'game' -Blue Whale which incited children and young adults into doing unethical and suicidal activities across the globe.This book tries to answer some of the common questions in a simple and easy to understand language, which children and young adults should know today to be safe online, such as: - How to securely use mobile?- How to be safe while playing online games?- How to deal with strangers online?- How to be safe on social media platforms such as Whatsapp, facebook, etc. ?- How to handle cyber-bullying?- How to talk to your parents if you're cyber-