Practical, no-fluff writeups on performance, security, browser auditing, and code quality.
More Security
What the same-origin policy actually restricts, what CORS headers do to relax it safely, and the wildcard-plus-credentials mistake that turns a convenience header into a critical exposure.
Three cookie flags, three completely different attacks they stop - what each one actually does, and why a cookie missing even one of them is a real, exploitable gap.
The industry's most-cited security list, translated out of developer jargon - what each category actually means for a site you own but didn't build yourself.
How an invisible iframe can trick a user into clicking something they never saw, and the header that stops your pages from being framed at all.
The handful of API security mistakes that show up constantly - missing rate limits, weak auth, and overly permissive CORS - and what a reasonable baseline actually looks like.
Both are free and both check security headers - here's what actually differs, and when you'd genuinely want one over the other (or both).
Every third-party script you load is code execution on your site by a company you don't control - what SRI actually verifies, and where it can and can't help.
Why a redirect parameter that accepts any URL turns your own trusted domain into free phishing infrastructure, and how to lock it down.
How a malicious page can make a logged-in user's own browser perform actions they never intended - and the tokens, cookie flags, and headers that actually stop it.
