Learn how to secure your online accounts with Google Authenticator and two-factor authentication (2FA). This practical Second Edition shows you how to set up 2FA, protect your accounts, manage backup and recovery, handle a lost phone, troubleshoot authentication problems, and defend against phishing and common online threats.
You'll also discover how passkeys and security keys are changing the future of online security.
Simple. Practical. Security-focused.
Your digital identity is valuable. Learn how to protect it.
D Singh is a writer and technology enthusiast who creates practical, easy-to-understand guides about apps, games, and software. His books focus on helping readers understand features, functions, benefits, limitations, and real-world use cases—without unnecessary technical complexity. Through clear explanations and practical insights, D Singh aims to make technology easier and more accessible for everyone.