Security tools
Free tools for checking selected security settings and practicing safer habits.
Password generator and checker
Generate a random password or passphrase and estimate the strength of yours. Everything runs in your browser.
Website analyzer
Check selected HTTP headers, search metadata, structured data and page speed.
IP address lookup
Find the provider, approximate location and abuse reports for any public IP address.
SSL certificate check
Check your certificate’s expiry, hostname and trust chain, with a warning before it expires.
Sensitive files check
Find out whether your website serves files such as .git, .env or database backups, and whether it has robots.txt, sitemap.xml and security.txt.
Open port check
Find out whether Remote Desktop, file sharing or another risky service on 10 common ports of your server can be reached from the internet.
SPF and DMARC check
Check your domain's SPF and DMARC records and see what to change.
Phishing quiz
Test your ability to recognize fraudulent emails and websites in an interactive test.
Czech NIS2 readiness check
Go through the minimum that the Czech Cybersecurity Act and Decree No. 410/2025 require in the lower-obligation regime. You get a list of gaps with section references.
Ransomware impact calculator
Estimate what downtime after a ransomware attack would cost your company and explain the business impact.
Cybersecurity budget calculator
An illustrative cybersecurity budget estimate based on company size and industry.