4tuimpactchallenge.nl

HTML metadata

Technology

CDN

Cloudflare

jQuery

3.4.0 known XSS (<3.5)

Social widgets

• YouTube Embed

Third-party hosts loaded (1)

• www.youtube.com×1

Social

• linkedin
• facebook
• instagram
• youtube

DNS records live

NS

• donna.ns.cloudflare.com
• rory.ns.cloudflare.com

Email authentication no MX

SPF

not published

DMARC

not published

DKIM

no key found at common selectors

Certificate (current)

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.4tuimpactchallenge.nl/

findings

• missing HSTS
• missing Content Security Policy
• missing frame protection
• missing content type protection
• missing Referrer Policy
• missing Permissions Policy

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Linked from (1)

• 4tu.nl×1