Practice · Security

Tell a secure site from an unsafe one

Security Critical at worst 14 of 30

Try it yourself

Four small businesses, and what happens when a browser asks each one for its homepage.

Which site is putting its visitors at risk?

Pick a line. Every one of them has an answer.

Show me the answer

http://greenfield-vets.example/ 200 OK served over http

This is the one. The site answers on http and never upgrades, so everything typed into it — names, phone numbers, the contact form — travels in the clear, and browsers mark it "Not secure" beside the address. Every modern browser now shames this in front of the visitor.

The written version

HTTPS: the padlock, and why browsers insist on it →

How to check your own site for this, what to change, and how to confirm it worked.

Now the real thing

Run this check on your own site.

The same check, plus twenty-nine others, against your actual pages. Free, no account, about a minute.

Free · No account · Results in under a minute · Public websites only