Domain History

mozilla.lt

Grade A · 80/100 · 4/6 security headers present

Security Score

80/ 100

Security Headers

4/ 6

CSP Violations

NoViolations

Issues Found

0Issues

Recommendations

0Available

CSP Analysis

Content Security PolicyHIGH

form-action 'self' https://accounts.firefox.com/ https://basket.mozilla.org; default-src 'self' *.mozilla.org; object-src 'none'; frame-src 'self' accounts.firefox.com js.stripe.com www.google-analytics.com www.googletagmanager.com www.youtube.com; media-src 'self' assets.mozilla.net videos.cdn.mozilla.net www.mozilla.org; frame-ancestors 'none'; base-uri 'none'; style-src 'self' www.mozilla.org; img-src 'self' blog.mozilla.org data: images.ctfassets.net www.google-analytics.com www.googletagmanager.com www.mozilla.org; upgrade-insecure-requests; script-src 'self' 'unsafe-eval' 'unsafe-inline' js.stripe.com s.ytimg.com tagmanager.google.com www.google-analytics.com www.googletagmanager.com www.mozilla.org www.youtube.com; font-src 'self' www.mozilla.org; connect-src 'self' https://accounts.firefox.com/ https://basket.mozilla.org o1069899.ingest.sentry.io o1069899.sentry.io region1.google-analytics.com www.google-analytics.com www.googletagmanager.com www.mozilla.org/submit/bedrock/

Directive Analysis

form-actionLOW

'self' https://basket.mozilla.org https://accounts.firefox.com/

•Missing recommended values for form-action: self

default-srcLOW

'self' *.mozilla.org

•Missing recommended values for default-src: self

object-srcLOW

'none'

•Missing recommended values for object-src: none

frame-srcLOW

'self' js.stripe.com www.youtube.com www.googletagmanager.com www.google-analytics.com accounts.firefox.com

•Missing recommended values for frame-src: self

media-srcLOW

'self' assets.mozilla.net www.mozilla.org videos.cdn.mozilla.net

•Missing recommended values for media-src: self

frame-ancestorsLOW

'none'

•Missing recommended values for frame-ancestors: none, self

base-uriLOW

'none'

•Missing recommended values for base-uri: none, self

style-srcLOW

'self' www.mozilla.org

•Missing recommended values for style-src: nonce-, sha512-, sha384-, sha256-, self

img-srcLOW

'self' www.mozilla.org www.google-analytics.com www.googletagmanager.com images.ctfassets.net blog.mozilla.org data:

•Missing recommended values for img-src: self

upgrade-insecure-requestsLOW

script-srcHIGH

js.stripe.com 'self' s.ytimg.com www.mozilla.org www.google-analytics.com tagmanager.google.com www.googletagmanager.com www.youtube.com 'unsafe-inline' 'unsafe-eval'

•Unsafe inline execution allowed in script-src

•Unsafe eval() execution allowed in script-src

•Missing recommended values for script-src: nonce-, sha512-, sha384-, sha256-, self

•No nonces or hashes used for script-src

font-srcLOW

'self' www.mozilla.org

•Missing recommended values for font-src: self

connect-srcLOW

o1069899.ingest.sentry.io 'self' www.google-analytics.com www.googletagmanager.com https://accounts.firefox.com/ region1.google-analytics.com o1069899.sentry.io www.mozilla.org/submit/bedrock/ https://basket.mozilla.org

•Missing recommended values for connect-src: self

Content Security PolicyHIGH

form-action 'self' https://accounts.firefox.com/ https://basket.mozilla.org; default-src 'self' *.mozilla.org; object-src 'none'; frame-src 'self' accounts.firefox.com js.stripe.com www.google-analytics.com www.googletagmanager.com www.youtube.com; media-src 'self' assets.mozilla.net videos.cdn.mozilla.net www.mozilla.org; frame-ancestors 'none'; base-uri 'none'; style-src 'self' 'unsafe-inline' www.mozilla.org; img-src 'self' blog.mozilla.org data: images.ctfassets.net www.google-analytics.com www.googletagmanager.com www.mozilla.org; upgrade-insecure-requests; script-src 'self' 'unsafe-eval' 'unsafe-inline' js.stripe.com s.ytimg.com tagmanager.google.com www.google-analytics.com www.googletagmanager.com www.mozilla.org www.youtube.com; font-src 'self' www.mozilla.org; connect-src 'self' https://accounts.firefox.com/ https://basket.mozilla.org o1069899.ingest.sentry.io o1069899.sentry.io region1.google-analytics.com www.google-analytics.com www.googletagmanager.com www.mozilla.org/submit/bedrock/

Directive Analysis

form-actionLOW

'self' https://basket.mozilla.org https://accounts.firefox.com/

•Missing recommended values for form-action: self

default-srcLOW

'self' *.mozilla.org

•Missing recommended values for default-src: self

object-srcLOW

'none'

•Missing recommended values for object-src: none

frame-srcLOW

'self' js.stripe.com www.youtube.com www.googletagmanager.com www.google-analytics.com accounts.firefox.com

•Missing recommended values for frame-src: self

media-srcLOW

'self' assets.mozilla.net www.mozilla.org videos.cdn.mozilla.net

•Missing recommended values for media-src: self

frame-ancestorsLOW

'none'

•Missing recommended values for frame-ancestors: none, self

base-uriLOW

'none'

•Missing recommended values for base-uri: none, self

style-srcHIGH

'self' www.mozilla.org 'unsafe-inline'

•Unsafe inline execution allowed in style-src

•Missing recommended values for style-src: nonce-, sha512-, sha384-, sha256-, self

img-srcLOW

'self' www.mozilla.org www.google-analytics.com www.googletagmanager.com images.ctfassets.net blog.mozilla.org data:

•Missing recommended values for img-src: self

upgrade-insecure-requestsLOW

script-srcHIGH

js.stripe.com 'self' s.ytimg.com www.mozilla.org www.google-analytics.com tagmanager.google.com www.googletagmanager.com www.youtube.com 'unsafe-inline' 'unsafe-eval'

•Unsafe inline execution allowed in script-src

•Unsafe eval() execution allowed in script-src

•Missing recommended values for script-src: nonce-, sha512-, sha384-, sha256-, self

•No nonces or hashes used for script-src

font-srcLOW

'self' www.mozilla.org

•Missing recommended values for font-src: self

connect-srcLOW

•Missing recommended values for connect-src: self

Security Headers

✗Permissions-PolicyMissing

Restricts which browser features (camera, microphone, geolocation) the page can use, limiting attack surface.

How to add it:

nginx

add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;

apache

Header always set Permissions-Policy "camera=(), microphone=(), geolocation=()"

cloudflare

Rules > Transform Rules > HTTP Response Header Modification > Set Permissions-Policy value

✓Referrer-PolicyPresent

strict-origin-when-cross-origin

Controls how much referrer information is sent with requests, preventing data leaks to third parties.

✓Strict-Transport-SecurityPresent

max-age=31536000

Forces browsers to use HTTPS for all future requests, preventing man-in-the-middle attacks and SSL stripping.

✓X-Content-Type-OptionsPresent

nosniff

Prevents browsers from MIME-sniffing responses away from the declared Content-Type, blocking drive-by downloads.

✓X-Frame-OptionsPresent

DENY

Prevents the page from being embedded in iframes, protecting against clickjacking attacks.

✗X-XSS-ProtectionMissing

Legacy XSS filter for older browsers. Modern browsers use CSP instead. Set to "0" to avoid false positives.

How to add it:

nginx

add_header X-XSS-Protection "0" always;

apache

Header always set X-XSS-Protection "0"

cloudflare

Rules > Transform Rules > HTTP Response Header Modification > Set X-XSS-Protection to "0"

2 recommended security headers are missing on mozilla.lt.

Beyond headers: infrastructure exposure

via OSN, our sister project

Security headers protect the browser. OSN maps what's exposed underneath — servers, open ports, known CVEs, DNS and WHOIS.

See what the internet sees about mozilla.ltWeak headers often come with other exposure — check the full picture.

See full exposure report on OSN →Free, no signup.

mozilla.lt

2 scans since 7/16/2025

Latest: 80/100

Total Scans

Latest Score

80/100

First Scan

7/16/2025

Last Scan

7/16/2025

Scan History

Date	Score	CSP	Headers	Issues	Action
Jul 16, 2025	A (80)	No	4/6	0	View →

Show off your security grade

Embed this badge on your site or README. It updates automatically after each scan and links back to this report.

HeaderTest security grade: A (80/100) for mozilla.lt

HTML

<a href="https://headertest.com/results/mozilla.lt" title="Security headers grade for mozilla.lt — HeaderTest">
  <img src="https://headertest.com/api/badge/mozilla.lt" alt="HeaderTest security grade: A (80/100) for mozilla.lt" />
</a>

Markdown

[![HeaderTest security grade: A (80/100) for mozilla.lt](https://headertest.com/api/badge/mozilla.lt)](https://headertest.com/results/mozilla.lt)