HTTP Header Security Test - HTTP Observatory | MDN

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Launched in 2016, the HTTP Observatory enhances web security by analyzing compliance with best security practices. It has provided insights to over 6.9 million websites through 47 million scans.
Developed by Mozilla, the HTTP Observatory performs an in-depth assessment of a site’s HTTP headers and other key security configurations.
Its automated scanning process provides developers and website administrators with detailed, actionable feedback, focusing on identifying and addressing potential security vulnerabilities.
The tool is instrumental in helping developers and website administrators strengthen their sites against common security threats in a constantly advancing digital environment.
The HTTP Observatory provides effective security insights, guided by Mozilla's expertise and commitment to a safer and more secure internet and based on well-established trends and guidelines.
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