Basics
Basics · cybersecurity session.
Cyber Security
Passwords, two-factor and backups — the unglamorous things that actually keep ordinary people safe, with free tools to check where you stand.
Free tools
Test a password, inspect a suspicious link, and see whether your details have already leaked — all in your browser, nothing sent anywhere.
Entropy, crack time and the patterns attackers try first. Runs entirely in your browser; nothing you type leaves this page.
Nothing is sent anywhere and nothing is stored. Close the tab and it is gone.
Empty
Type a password to check it.
Free tools
Subnets, transfer times, uptime budgets and what your browser gives away — the sums nobody wants to do by hand.
Your public IP, and everything your browser hands over without being asked. This one makes a request to a public service — the panel says exactly what is sent.
Your public IP address
Finding your public address needs one request to an outside service, so nothing happens until you press the button. Everything on the right was already visible to this page without asking.
What your browser hands over
Any site you open can read all of this without permission. Together it is often enough to recognise you again — which is what browser fingerprinting is.
Free tools
Base64, URL encoding, JWT, JSON, UUIDs and timestamps. Runs locally, so you can paste real data into it.
Encode and decode, Unicode-safe, with a URL-safe option. Runs entirely in your browser; nothing you type leaves this page.
Unicode-safe both ways — text is converted through UTF-8 first, which is where most online encoders break.
Free tools
Power supply sizing, RAID capacity and a backup plan that actually survives a drive failure.
Score your backup against the 3-2-1 rule and see what is missing. Runs entirely in your browser; nothing you type leaves this page.
The original counts as one copy. A cloud folder that syncs is not a second copy — delete the file once and it goes from both.
Not 3-2-1 yet
This does not meet 3-2-1 yet.
Security explained without jargon: what to change first, what the warnings really mean, and the handful of habits that do most of the work.
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The whole library is free and open — have a look around.
The things people usually want to know.
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Use the contact form and your message comes straight through.
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