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SECURITY SCORE
Certificate Information
Subject
C=NO, ST=Oslo, O=Universitetet i Oslo, CN=uio.no
Issuer
C=GR, O=Hellenic Academic and Research Institutions CA, CN=GEANT TLS ECC 1
Valid From
September 08, 2025
Valid Until
September 08, 2026
290 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
63:2F:33:D7:FF:AD:20:89:E1:12:70:0A:6A:AD:FC:39:E3:14:B1:C0:1E:D8:61:14:A5:47:B5:09:BC:C2:B5:15
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=31536000
Content-Security-Policy
Weak
frame-ancestors; upgrade-insecure-requests; object-src
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
fullscreen=(self "https://*.uio.no" "https://*.youtube.com" "https://uio.cloud.panopto.eu"), picture-in-picture=(self "https://*.uio.no" "https://uio.cloud.panopto.eu"), interest-cohort=(), browsing-topics=(), join-ad-interest-group=(), run-ad-auction=(), conversion-measurement=(), accelerometer=(), ambient-light-sensor=(), autoplay=(), battery=(), camera=(), display-capture=(), encrypted-media=(), gamepad=(), geolocation=(), gyroscope=(), layout-animations=(self), legacy-image-formats=(), magnetometer=(), microphone=(), midi=(), oversized-images=(self), payment=(), publickey-credentials-create=(self), publickey-credentials-get=(), speaker-selection=(), sync-xhr=(), unoptimized-images=(self), unsized-media=(self), usb=(), screen-wake-lock=(), web-share=(), xr-spatial-tracking=(), clipboard-read=(), clipboard-write=(), hid=(), serial=(), cross-origin-isolated=(), execution-while-not-rendered=(self), execution-while-out-of-viewport=(self), keyboard-map=(), navigation-override=(), identity-credentials-get=(), idle-detection=(), local-fonts=(), otp-credentials=(), window-management=(), storage-access=()
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Significantly strengthen CSP directives
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