Free Website Security Scanning

What is Free Scanning?

Free website security scanning tools analyse publicly accessible web applications for common vulnerabilities, misconfigurations, and security weaknesses without requiring payment. These tools range from single-purpose checkers (SSL testing, header analysis) to comprehensive platforms like ShieldReport that cover the OWASP Top 10, TLS configuration, DNS hardening, and email authentication in a single scan.

How it works

Free scanners typically work by making HTTP requests to a target domain and analysing the responses. They check TLS certificate validity and protocol configuration, evaluate HTTP security headers against best practices, test for common web vulnerabilities listed in the OWASP Top 10, analyse DNS records for security configurations like SPF, DKIM, and DMARC, and probe for open ports and exposed services. Results are categorised by severity and mapped to specific attack vectors.

Impact

Free scanning democratises security testing, allowing small businesses, startups, and individual developers to identify vulnerabilities before attackers do. Without regular scanning, misconfigurations accumulate silently — expired certificates, missing security headers, weak TLS settings, and exposed services create an expanding attack surface that automated threat actors actively probe.

How to fix it

Run a free scan with ShieldReport to establish your security baseline. Address critical and high-severity findings first — these represent the vulnerabilities most likely to be exploited. Common quick wins include adding security headers, upgrading TLS configuration, securing cookie attributes, and implementing email authentication records. Set up scheduled scans to catch configuration drift and new vulnerabilities automatically.

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