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Free Security Tools

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

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Check your domain right now

Email, HTTPS, DNS and security headers, graded A to F in about 30 seconds. No account.

We only check public DNS, HTTPS and email records. No login or scanning required.

Check your security

Live lookup Free Security Check Grade your domain A–F across HTTPS, email, DNS and security headers in seconds. Open → Live lookup Email Spoofing Check Can scammers forge email from your domain? Instant SPF, DKIM & DMARC verdict. Open →

Network & admin tools

Live lookup Network Tools DNS, WHOIS, SSL, email security, HTTP headers, IP blacklist and reverse DNS lookups. Open → Runs in your browser Subnet & Password Tools IPv4/IPv6 subnet calculator and a strong password & passphrase generator — 100% in your browser. Open →

Learn & test yourself

Runs in your browser AI Security Quiz Two-minute quiz: discover your Shadow-AI risk level and get instant recommendations. Open → Runs in your browser Spot the Phish A fast, free game — can you tell real messages from scams? Test your instincts. Open →

Stay up to date

Live lookup Security news The security news that matters, from selected sources, grouped by day and without the noise. Open → Live lookup Vulnerability Search Search the EU Vulnerability Database (EUVD) for the latest, exploited and critical CVEs. Open → By email Weekly security news The news, CVE alerts for your vendors and a monthly check of your domain, straight to your inbox. Open →

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