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SECURITY SCORE
Certificate Information
Subject
CN=resources.marker.io
Issuer
C=US, O=Google Trust Services, CN=WE1
Valid From
November 10, 2025
Valid Until
February 08, 2026
46 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
8E:0F:A8:58:7C:DE:E0:CF:7A:C7:4F:78:EB:BE:B1:47:D8:FD:12:5A:3D:1B:64:C6:1B:A5:7C:5B:62:CA:E8:53
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
HTTP Security Headers
Status
Strict-Transport-Security
Weak
max-age=0; includeSubDomains; preload
Content-Security-Policy
Basic
default-src; script-src; style-src; +13 more
default-src 'self'; script-src 'self' app.marker.io plausible.io www.googletagmanager.com www.google-analytics.com www.clarity.ms snap.licdn.com px.ads.linkedin.com 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: https: blob:; font-src 'self' data:; connect-src 'self' app.marker.io plausible.io *.plausible.io www.google-analytics.com *.google-analytics.com www.clarity.ms *.clarity.ms snap.licdn.com px.ads.linkedin.com www.googletagmanager.com; media-src 'self'; object-src 'none'; frame-src www.googletagmanager.com; worker-src 'self' blob:; child-src 'self' blob:; manifest-src 'self'; base-uri 'self'; form-action 'self'; frame-ancestors 'none'; upgrade-insecure-requests;
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
camera=(), microphone=(), geolocation=(), payment=()
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
CAA Records (Certificate Authority Authorization)
CAA Records
Not Configured
(Any CA can issue certificates)
CAA Issues
- • No CAA records configured - any CA can issue certificates
Recommendations
- • Implement CAA records to restrict which CAs can issue certificates for your domain
- • This adds an extra layer of security against unauthorized certificate issuance
- • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
- • Consider adding 'iodef' record to receive security incident reports