Free security tools
Free Security Tools: CVE, Port, Nmap, API & Email Checks
Practical tools for IT teams, developers and site owners. Paste your data, get a clear answer, and fix what matters. Every tool is free, needs no account, and runs in your browser.
- Free
- No signup
- Runs in your browser
All tools
1CVE Priority CheckerPaste CVE IDs and see which to patch first, ranked by CVSS, EPSS and the CISA known-exploited list.Open tool2Port Exposure Fix GeneratorPick a port and your firewall. Get copy-paste commands to block or restrict it, and check it worked.Open tool3Nmap Output Risk ExplainerPaste Nmap output and get a plain-English risk rating and fix for every open port.Open tool4OpenAPI Security LinterPaste an OpenAPI or Swagger spec and find unauthenticated endpoints, secrets in URLs and more.Open tool5Email Security CheckEnter a domain and get an A to F grade for SPF, DKIM and DMARC, with the exact records to fix it.Open tool
These tools give you a snapshot. Keep watching your websites, APIs and networks automatically.
Run a free scanSee pricingFree tools by ScanTitan. Guidance only, not a guarantee of security.