Security Headers Scanner
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Extension summary
Security Headers Scanner allows developers and security experts to easily inspect a site’s HTTP Security Headers like Content Security Policy (CSP) and understand wether it serves as a strong mitigation against client-side attacks like XSS, Clickjacking, Formjacking, CSRF and more.
The extension runs with the same logic as SecurityHeaderScanner.com tool, and is built combining years of cumulative best practice with Security Headers and Content-Security-Policy (CSP) technologies and how to most effectively block client-side attacks.
The tool may suggest a Grade / Score / Tips / Bypasses to site's security headers. These are to be taken as help to developers only, and RapidSec provides no guarantees or warranties for this tool.
If you are looking to automate the deployment of Content-Security-Policy (CSP), along with other important security controls (SameSite, Security headers), you can use RapidSec.com .
User reviews
Дмитрий Гусев, 2021-08-03 
Saurav Hiremath, 2021-08-02Extension safety
Risk impact
Security Headers Scanner requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk likelihood
Security Headers Scanner may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.
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