Free tools
Free security tools
Check your email security, test your website's SSL and headers, and score your ransomware readiness — free, no sign-up, nothing stored.
Email security checker
Find out whether attackers can send email pretending to be you. Checks SPF, DKIM, DMARC, MX and MTA-STS, grades your domain and tells you exactly what to fix.
Run the free check →Website security & SSL check
Test your website's SSL certificate, HTTPS redirect, TLS version and security headers such as HSTS and Content-Security-Policy — with a grade and plain-English fixes.
Run the free check →Ransomware readiness quiz
Answer 15 yes/no questions about MFA, patching, EDR, backups and incident response. Get a ransomware readiness score and an action plan ordered by impact. Answers never leave your browser.
Run the free check →FAQ
Common questions
Are these security tools really free?
Yes. There is no sign-up, no email address required and no trial. The tools only read information that is already public, and we do not store the domains you check or your quiz answers.
Can I check a domain I don't own?
The email and website checks only read public DNS records and the response any visitor's browser receives, so they are safe to run against any domain — the same way a supplier or customer would see it. They do not scan ports, try passwords or test for vulnerabilities.
What do the tools not cover?
Automated checks see what is visible from the outside. They do not look inside your network, your Microsoft 365 tenant or your backups. For that, a vulnerability assessment, Microsoft 365 security assessment or ransomware readiness assessment from our engineers goes much deeper.
My result shows problems. Can you fix them for me?
Yes. Most email and website findings are quick configuration changes. Send us your result through the contact page and an engineer will tell you what is needed and what it would cost — no obligation.
Want an engineer to look deeper?
Our tools check what is visible from the outside. A security assessment looks at everything else — and comes with a costed plan to fix it.