Free tools
Quick checks for the things that go wrong online.
No account and no card. Use them once, or come back whenever something looks off. With a free account the deeper services open up, and your reports are saved.
Message checker
Paste a suspicious text, WhatsApp message or email. We tell you whether it looks like a scam and what to do.
Check a messageLink checker
Paste a link from a text, email or ad. We open it for you and say what it really does.
Check a linkPassword check
Has this password appeared in a data breach? Checked without the password ever leaving your device.
Check a passwordPhoto privacy cleaner
See the location and camera details hidden in a photo, then remove them before you share it.
Clean a photoPaste guard
Check text for card numbers, keys and IDs before you share it with an AI or send it on, and get a masked copy.
Check some textWebsite tracker scan
See which advertising and recording trackers a website loads the moment you arrive.
Scan a websiteWebsite security check
Grade a website's security headers, HTTPS and protection against forged email.
Check a websiteLookalike domain finder
See which fake spellings of your domain already exist, the kind used for phishing.
Find lookalikesMyDefense Academy
Short lessons and a free test that places you on a five-level scale for eight everyday security topics.
Start learning
With a free account
Deeper services that keep a history, send things on your behalf or check what only you can prove is yours. Free.
Suspicious email analysis
Paste a full email and get header checks, look-alike sender detection and an AI risk score.
Deeper scan of your own site
Prove you own a domain and we also look for exposed files and risky configuration.
Erasure requests
Send a data-deletion request to a company under KVKK, GDPR or CCPA and track the reply.
Document security test
Upload a document and get an AI security review of every section.
Where is my email registered?
Find the sites that hold an account under your email address.
Canary tokens
Plant a trap link or image and get an email the moment someone opens it.
Security certificate
Turn your Academy results into a personal certificate with a public code anyone can check.
Keep your digital life safer
A free account saves your reports and adds email analysis, erasure requests and the Academy. Free, no card needed.