Domain History

www.krystinanellis.com

Grade A+ · 100/100 · 7/7 security headers present

Security Score

A+

100/ 100

Security Headers

7/ 7

CSP Violations

NoViolations

Issues Found

3Issues

Recommendations

2Available

Security

100 / 100

Excellent security posture with strong CSP protections in place.

Compliance

97 / 100

CSP implementation follows recommended standards and specifications.

Best Practices

40 / 100

Few best practices adopted — significant room for improvement.

CSP Analysis

Content Security PolicyMEDIUM

default-src 'self'; script-src 'self'; style-src 'self'; img-src 'self' data:; font-src 'self'; connect-src 'self'; frame-ancestors 'none'; base-uri 'self'; form-action 'self'

Directive Analysis

default-srcLOW

self

script-srcMEDIUM

self

•No nonces or hashes used for script-src

style-srcLOW

self

img-srcLOW

self data:

•Info: 'data:' URI in img-src

font-srcLOW

self

connect-srcLOW

self

frame-ancestorsLOW

none

base-uriLOW

self

form-actionLOW

self

Missing Directives

⚠HIGHMissing HIGH directive object-src (Plugin control - should be 'none')

Security Headers

✓Cross-Origin-Opener-PolicyPresent

same-origin

Isolates the browsing context to prevent Spectre-type side-channel attacks and cross-origin window manipulation.

✓Permissions-PolicyPresent

camera=(), microphone=(), geolocation=(), fullscreen=(self), payment=()

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

✓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; includeSubDomains; preload

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-ProtectionPresent

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

Issues Found

•Info: 'data:' URI in img-srcinfo
•Missing HIGH directive object-src (Plugin control - should be 'none')high
•No nonces or hashes used for script-srcmedium

Recommendations

→Add object-src directive with appropriate restrictions
→Review and tighten source lists in Content Security Policy

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 www.krystinanellis.com

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