Security Tools
Free, passive checks you can run on any domain. No login, nothing intrusive.
Website Security Check
SSL, security headers, HTTPS redirect and privacy policy — a quick health score for any site.
Open toolSSL Certificate Checker
Check a certificate's expiry, issuer, and what it covers. Know before it lapses.
Open toolWHOIS / Domain Lookup
Registrar, registration and expiry dates, status, and name servers for any domain.
Open toolSubdomain Finder
Discover subdomains from public certificate transparency logs — see your real attack surface.
Open toolPassword Strength Checker
See how strong a password is and how long it would take to crack — checked privately in your browser.
Open toolEmail Security Checker
Check your domain's SPF and DMARC records — find out if attackers can spoof email from your business.
Open toolLookalike Domain Finder
Find typosquat and lookalike domains impersonating your business for phishing — before your customers fall for them.
Open toolDNS Records Lookup
View all public DNS records — A, MX, NS, TXT and more — for any domain in one clean view.
Open toolSecurity Headers Checker
Grade your website's security headers — HSTS, CSP, X-Frame-Options and more — in seconds.
Open toolSPF & DMARC Generator
Generate the exact DNS records that stop attackers spoofing email from your domain — copy and paste.
Open toolEmail Header Analyzer
Suspect a phishing email? Paste its headers and we'll check if it's really from who it claims.
Open toolPassword Generator
Create strong random passwords and memorable passphrases — generated privately in your browser.
Open toolTech-Stack Detector
See what a website is built with — CMS, frameworks, server — and spot outdated software.
Open toolAttack Surface Mapper
Everything an attacker can discover about your domain — subdomains, IPs, mail and name servers — in one view.
Open toolCyber-Safety Quiz
Answer 10 questions and get your business's security score with tailored recommendations. No email needed.
Open toolOpen source & transparent
The engine behind these tools is open source — passive, read-only, zero dependencies. Read the code, run it yourself, or build on it.
View on GitHub