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SECURITY SCORE
Certificate Information
Subject
CN=otolgroup.com
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
January 07, 2026
Valid Until
April 07, 2026
71 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
36:F9:40:B2:86:60:BA:A2:81:88:12:2C:5B:10:3C:18:4B:80:8B:13:B8:4C:34:01:D7:8C:91:F8:EF:83:20:14
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
Excellent
max-age=63072000; includeSubDomains; preload
Content-Security-Policy
Basic
default-src; script-src; style-src; +6 more
default-src 'self'; script-src 'self' 'unsafe-eval' 'unsafe-inline' https://*.google.com https://*.googleapis.com https://*.gstatic.com https://challenges.cloudflare.com https://www.googletagmanager.com https://googletagmanager.com https://va.vercel-scripts.com; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com https://challenges.cloudflare.com; img-src 'self' blob: data: https:; font-src 'self' data: https://fonts.gstatic.com; connect-src 'self' http://localhost:* http://127.0.0.1:* https://*.aliyuncs.com https://*.googleapis.com https://*.google.com https://challenges.cloudflare.com https://vitals.vercel-insights.com https://www.google-analytics.com https://analytics.google.com https://googletagmanager.com https://www.googletagmanager.com https://stats.g.doubleclick.net; frame-src 'self' https://challenges.cloudflare.com; child-src https://challenges.cloudflare.com; worker-src 'self' blob:;
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • Consider adding Permissions-Policy to control browser features
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