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Setting Security Headers in Apache2
Setting essential security headers in Apache2 — X-Frame-Options, HSTS, and CSP — to add real defense-in-depth against common attacks.
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Preventing SQL Injection in PHP with Prepared Statements
Why concatenating user input into SQL queries is dangerous, and how prepared statements eliminate SQL injection entirely.
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CORS Explained Properly, Once and For All
CORS explained properly: why the Same-Origin Policy exists, and why the fix for a CORS error always belongs on the server, never the client.
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Preventing XSS Attacks in JavaScript Applications
Preventing XSS attacks in JavaScript applications: the innerHTML vs textContent distinction, and why framework escape hatches reintroduce the same risk.
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Content Security Policy (CSP) Explained
Content Security Policy explained: how it adds a second defense layer against XSS beyond output escaping, and how to roll one out safely.