Domain History

agustinandres.com

Grade B · 75/100 · 4/7 security headers present

Security Score

75/ 100

Security Headers

4/ 7

CSP Violations

NoViolations

Issues Found

12Issues

Recommendations

1Available

Security

75 / 100

Good security foundation but some CSP hardening recommended.

Compliance

80 / 100

Mostly compliant but some directives or headers are missing.

Best Practices

68 / 100

Basic practices followed but missing important optimizations.

CSP Analysis

Content Security PolicyHIGH

default-src 'self'; script-src 'self' 'unsafe-inline'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob: https://res.cloudinary.com; media-src 'self' data: blob: https://res.cloudinary.com; font-src 'self' data:; connect-src 'self' https://res.cloudinary.com; frame-ancestors 'none'; object-src 'none'; base-uri 'self'; form-action 'self'; manifest-src 'self'; worker-src 'self' blob:; upgrade-insecure-requests;

Directive Analysis

default-srcLOW

self

script-srcHIGH

self unsafe-inline

•Unsafe inline execution allowed in script-src

•No nonces or hashes used for script-src

style-srcHIGH

self unsafe-inline

•Unsafe inline execution allowed in style-src

img-srcLOW

self data: blob: https://res.cloudinary.com

•Info: 'data:' URI in img-src

•Info: 'blob:' URI in img-src

media-srcLOW

self data: blob: https://res.cloudinary.com

•Info: 'data:' URI in media-src

•Info: 'blob:' URI in media-src

font-srcLOW

self data:

•Info: 'data:' URI in font-src

connect-srcLOW

self https://res.cloudinary.com

frame-ancestorsLOW

none

object-srcLOW

none

base-uriLOW

self

form-actionLOW

self

manifest-srcLOW

self

worker-srcMEDIUM

self blob:

•Info: 'blob:' URI in worker-src

•RISK: 'blob:' in worker-src allows creation of workers from dynamic blob content

upgrade-insecure-requestsLOW

Security Headers

✗Cross-Origin-Opener-PolicyMissing

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

How to add it:

nginx

add_header Cross-Origin-Opener-Policy "same-origin" always;

apache

Header always set Cross-Origin-Opener-Policy "same-origin"

cloudflare

Rules > Transform Rules > HTTP Response Header Modification > Set Cross-Origin-Opener-Policy to "same-origin"

✓Permissions-PolicyPresent

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

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-SecurityMissing

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

How to add it:

nginx

add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always;

apache

Header always set Strict-Transport-Security "max-age=31536000; includeSubDomains; preload"

cloudflare

SSL/TLS > Edge Certificates > Enable HSTS (toggle on, set max-age to 12 months, enable includeSubDomains)

✓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-ProtectionDeprecated

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

2 recommended security headers are missing on agustinandres.com.

Issues Found

•Info: 'blob:' URI in img-srcinfo
•Info: 'blob:' URI in media-srcinfo
•Info: 'blob:' URI in worker-srcinfo
•Info: 'data:' URI in font-srcinfo
•Info: 'data:' URI in img-srcinfo
•Info: 'data:' URI in media-srcinfo
•Missing security header: Cross-Origin-Opener-Policymedium
•Missing security header: Strict-Transport-Securitymedium
•No nonces or hashes used for script-srcmedium
•RISK: 'blob:' in worker-src allows creation of workers from dynamic blob contentmedium
•Unsafe inline execution allowed in script-srchigh
•Unsafe inline execution allowed in style-srchigh

Recommendations

→Consider implementing a stricter Content Security Policy

Beyond headers: infrastructure exposure

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