What is Nikto? Nikto is a free and open-source web server scanner used by security professionals to identify: ✅ Outdated software versions ✅ Dangerous files and directories ✅ Security misconfigurations ✅ Missing security headers ✅ Default files ✅ Known web server issues Nikto is commonly used during authorized security assessments to understand web server exposure and improve security posture. Installation Kali Linux Usually pre-installed. Verify: nikto -Version Install: sudo