Digital basics
Understand the protocols, settings, and everyday decisions that shape your online safety.
A focused path through practical security concepts. Read in any order, then try the suggested exercises.
Small steps, real security.
Understand the protocols, settings, and everyday decisions that shape your online safety.
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Field notes
Spot a phishing message before you click
Most suspicious messages ask you to act faster than you can verify. Learn to check context, not just spelling.
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DNS is an address book, not a trust badge
Understand what a domain lookup tells you and why a correct answer does not guarantee a safe site.
Read field note
What HTTPS protects, and what it cannot
The browser lock icon is useful but narrow. Understand encryption in transit without assuming every page is honest.
Read field note