Open
Cached
·
just now
91/100
SECURITY SCORE
Certificate Information
Subject
CN=studio.nebius.ai
Issuer
C=US, O=Let's Encrypt, CN=R12
Valid From
January 04, 2026
Valid Until
April 04, 2026
61 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
7E:05:7B:1A:F9:D1:D9:86:C4:86:C7:44:F6:01:BF:BD:CE:1C:E1:B1:DC:0E:65:C6:E4:68:14:0B:D3:DD:FD:D7
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
Present
max-age=15552000; includeSubDomains
Content-Security-Policy
Good
default-src; script-src; img-src; +14 more
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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
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Strengthen CSP by removing 'unsafe-eval'
- • 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
Subject Alternative Names
4 domains
studio.nebius.com
tokenfactory.nebius.com
docs.studio.nebius.com
studio.nebius.ai
Other domains in certificate