🧰 Security toolbox

All of Shield404's checkers, free and with no sign-up. File and photo analysis happens on your own device: nothing is uploaded to any server.

🔍 Am I exposed?

🔍 Has my data been leaked?

When a company gets hacked, its users' data ends up circulating. Check if yours is in known breaches.

🔑 Is your password on the thieves' lists?

Criminals try already-leaked passwords first, everywhere. Your password NEVER leaves your device: it's compared using a technique called k-anonymity.

📧 My email

We query XposedOrNot, a service specialised in data breaches. Your email is used only for the query: we don't store it.

🪪 Is your ID number, phone or other data published somewhere?

Check if it appears on web pages known to search engines (forums, published leaks, listings...). We never store it.

🌐 Is this IP suspicious?

Paste an IP address (for example, one from a strange login attempt on your email or router) and we'll check it against known abuse lists.

🕵️ What does the internet know about me?

Check your name, ID number or phone in the section above — the web exposure search is right there.

📸 Does my photo reveal my location?

Many phone photos store the exact GPS location and the device model. Check before you post it — the photo is analysed in your own browser, and is never uploaded.

📩 Suspicious emails and files

🔬 Analyse an email's headers (forensic)

Paste the email's full technical headers (not just the text you read). In Gmail: open the email → the three dots (⋮) → "Show original" → copy everything. We detect whether the sender is spoofed by checking SPF, DKIM, DMARC and where your replies would actually go.

🧷 Is this attachment safe?

Did you receive an "invoice", a "quote", a "receipt", or a photo you weren't expecting? Check it before opening it. With photos, we also check whether it reveals your GPS location. The file is NOT uploaded anywhere: it's examined on your own device, and only its digital fingerprint travels.

🛡️ Better protection

🔐 Strong password generator

Generated on your own device. It never leaves here.

Press generate…

Uppercase Numbers Symbols Length: 16

Or an easy-to-remember phrase:

Press generate…

🧮 How long would it take to crack?

🔒 Check your WiFi and router

Tick what you've already done. We don't send anything anywhere: only you see your answers.

🛜 Is someone tampering with my connection?

First, let's be honest: no website — not even this one — can tell if someone is just silently listening to your WiFi; that's always invisible, to anyone. What we CAN detect are signs that something is actively intercepting or altering your traffic. Your best defence against silent listening is already on: the padlock (HTTPS) in your browser.