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Free Security Tools

A growing set of free tools to check, harden and understand your security — no signup required.

Check your security

Free Security Check

Live lookup

Grade your domain A–F across HTTPS, email, DNS and security headers in seconds.

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Email Spoofing Check

Live lookup

Can scammers forge email from your domain? Instant SPF, DKIM & DMARC verdict.

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Vulnerability Search

Live lookup

Search the EU Vulnerability Database (EUVD) for the latest, exploited and critical CVEs.

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Network & admin tools

Network Tools

Live lookup

DNS, WHOIS, SSL, email security, HTTP headers, IP blacklist and reverse DNS lookups.

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Subnet & Password Tools

Runs in your browser

IPv4/IPv6 subnet calculator and a strong password & passphrase generator — 100% in your browser.

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Learn & test yourself

AI Security Quiz

Runs in your browser

Two-minute quiz: discover your Shadow-AI risk level and get instant recommendations.

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Spot the Phish

Runs in your browser

A fast, free game — can you tell real messages from scams? Test your instincts.

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