jxf.me

HTML metadata

Technology

CDN

Fastly

Server

GitHub.com

Third-party hosts loaded (2)

• s3.amazonaws.com×2
• cdn.mathjax.org×1

Social

• github
• twitter
• linkedin

DNS records live

NS

• ns1.dnsimple.com
• ns2.dnsimple.com
• ns3.dnsimple.com
• ns4.dnsimple.com

MX

• 1 aspmx.l.google.com
• 10 alt3.aspmx.l.google.com
• 10 alt4.aspmx.l.google.com
• 5 alt1.aspmx.l.google.com
• 5 alt2.aspmx.l.google.com

TXT

• ALIAS for fj.github.io

Verified for

• Google

Email authentication weak

SPF

v=spf1 a include:_spf.google.com ~all

softfail (~all)

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://jxf.me/

findings

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

Links to (4)

• github.com×3
• linkedin.com×3
• stackoverflow.com×3
• twitter.com×3

Linked from (1)

• bangbangcon.com×3