Website security is an important part of modern web development and technical SEO. Proper security headers help protect websites against common vulnerabilities such as cross-site scripting, clickjacking, and content injection attacks.

The **Security Data tab in CrawlRhino SEO Crawler** allows you to quickly analyze the security configuration of a website and identify missing or misconfigured security headers.

This tutorial explains how to review website security settings using CrawlRhino SEO Crawler.

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# Running a Website Security Check

To analyze website security headers:

1. Start a crawl using **CrawlRhino SEO Crawler**.
2. Allow the crawl to complete.
3. Navigate to the **Security Data** tab in the crawl results.

CrawlRhino will display a list of security checks performed on the scanned pages.

Each result includes:

- severity level
- security check type
- detected issue
- recommended fix

This allows you to quickly identify potential security misconfigurations.

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# Understanding Security Data Results

The Security Data table shows several columns that help explain each detected issue.

### Severity

Indicates the importance of the security check result.

Common values include:

- **OK** – no issue detected
- **WARN** – a potential security improvement is recommended

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### Check

Displays the type of security check performed.

Examples include:

- HTTPS
- HSTS
- Content Security Policy
- Clickjacking protection
- MIME sniffing protection

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### Details

Provides a brief explanation of the detected configuration or missing header.

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### Recommendation

Provides guidance on how the issue can be fixed or improved.

These recommendations help developers quickly implement stronger security policies.

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# Security Checks Performed by CrawlRhino

CrawlRhino SEO Crawler performs several common website security checks.

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### HTTPS

Ensures that the website is served over **HTTPS**.

HTTPS encrypts communication between the browser and server, protecting sensitive data from interception.

Google also considers HTTPS a **ranking signal**, making it important for SEO.

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### HSTS (Strict-Transport-Security)

The **HSTS header** forces browsers to use HTTPS when accessing the website.

Without HSTS, users may still access insecure HTTP versions of pages.

CrawlRhino checks whether this header is configured properly.

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### Content Security Policy (CSP)

The **Content Security Policy header** helps prevent cross-site scripting (XSS) attacks by controlling which resources can be loaded by the browser.

Missing or weak CSP rules can increase security risks.

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### Clickjacking Protection

Clickjacking attacks attempt to trick users into clicking hidden elements.

This can be prevented using the **X-Frame-Options header** or the **frame-ancestors directive in CSP**.

CrawlRhino checks whether clickjacking protection is configured.

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### MIME Sniffing Protection

Browsers may attempt to interpret files as different content types.

The **X-Content-Type-Options: nosniff** header prevents this behaviour and improves security.

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### Referrer Policy

The **Referrer-Policy header** controls how much information is sent when users navigate between websites.

Proper configuration can help protect user privacy.

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### Permissions Policy

The **Permissions-Policy header** allows websites to control browser features such as:

- camera access
- microphone access
- geolocation

Restricting unnecessary features improves overall security.

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### Mixed Content

Mixed content occurs when HTTPS pages load assets using HTTP.

This can weaken security and trigger browser warnings.

CrawlRhino helps identify potential mixed content issues.

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### Insecure Form Actions

Forms that submit data over HTTP instead of HTTPS may expose sensitive information.

CrawlRhino checks whether forms are submitted securely.

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# Why Security Headers Matter

While security headers are primarily designed to protect websites and users, they also contribute to better website quality.

Benefits include:

- improved website security
- stronger browser protection
- better user trust
- improved HTTPS compliance

Maintaining strong security configurations helps ensure your website follows modern web standards.

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# Next Step

After reviewing the **Security Data tab**, you can continue analyzing other areas of your crawl results using CrawlRhino SEO Crawler, including:

- broken links
- image optimization opportunities
- JavaScript rendering analysis
- technical SEO issues

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# Download CrawlRhino SEO Crawler

If you want to perform detailed website audits and technical SEO analysis, CrawlRhino provides a fast and powerful alternative to traditional **SEO spider software**.

You can download CrawlRhino and start crawling websites immediately.

[Download CrawlRhino SEO Crawler](/content/crawlrhino-seo-crawler/index.html)