Safe habits for everyday IT work.
Most security problems start with ordinary habits, not movie-style hacking: a reused password, a skipped update, a rushed click on a message. Good habits remove a large share of everyday risk, and they are the base for anyone who later studies security as a career.
This area covers the habits first: strong passwords, two-factor authentication, spotting phishing, updates and backups. It then explains the ideas behind them, including malware, encryption, what a VPN does and the three goals of security known as confidentiality, integrity and availability.
Who it helps: Start here if you want safer habits at home or at work, or if you are thinking about a security career and need the basics first.
Security Basics
Learn what makes a password strong, how to build a memorable passphrase, and how a password manager helps you keep a unique password for every account.
Updated October 30, 2026
Security Basics
Understand what two-factor authentication is, the main types of second step, what it stops and what it does not, and which accounts to protect first.
Updated October 30, 2026
Security Basics
Learn the warning signs of phishing emails, texts and calls, a simple check to run before you click, and what to do if you already did.
Updated October 30, 2026
Security Basics
Learn what software updates and security patches are, why attackers target old software, and how to keep your devices current without the hassle.
Updated October 30, 2026
Security Basics
Learn what a backup is, how the 3-2-1 rule works, how to set up a simple routine for photos and documents, and why you must test a restore.
Updated October 30, 2026
Security Basics
A plain guide to the main types of malware, including viruses, worms, trojans, ransomware and spyware, how each one behaves, and how infections start.
Updated October 30, 2026
Security Basics
Learn how encryption turns readable data into ciphertext, the difference between symmetric and public-key methods, and where encryption stops helping.
Updated October 30, 2026
Security Basics
Find out whether public Wi-Fi is safe, what a VPN actually does, what it cannot do, and simple habits that protect you on any network.
Updated October 30, 2026
Security Basics
Learn the three core goals of information security, see them applied to a small clinic scenario, and understand the trade-offs between them.
Updated October 30, 2026