Encryption and authentication are the two main ways your data stays private and find when you're online. Encryption scrambles your information so only the right person can read it, while authentication confirms you are who you say you are before letting you access something. Understanding how these work helps you make better choices about passwords, accounts, and the devices you use.
The articles here explain what encryption actually does, how different types work, why authentication matters beyond just a password, and what to look for when a website or app claims to protect your data. You'll learn what makes a password stronger, how two-factor authentication works, and when encryption is worth the extra step.