Open
Cached
·
just now
92/100
SECURITY SCORE
Certificate Information
Subject
C=US, ST=WA, L=Redmond, O=Microsoft Corporation, CN=docs.xamarin.com
Issuer
C=US, O=Microsoft Corporation, CN=Microsoft Azure RSA TLS Issuing CA 08
Valid From
October 19, 2025
Valid Until
April 17, 2026
108 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA384-RSA
SHA-256 Fingerprint
72:EC:1A:76:89:CF:47:E1:49:7B:0E:0B:92:80:C3:0E:34:B9:98:E3:C9:FE:7B:69:DA:F0:16:5E:D0:B4:C5:F1
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=31536000; includeSubDomains; preload
Content-Security-Policy
Basic
default-src; script-src; style-src; +10 more
default-src *;script-src 'self' 'unsafe-inline' 'unsafe-eval' *.microsoft.com js.monitor.azure.com dc.services.visualstudio.com try-ppe.dot.net aznb-ame-prod.azureedge.net client-api.arkoselabs.com markdowneditor-public-e0gpfpcwcbbze3ag.b01.azurefd.net markdowneditor-external-Public-fmgmfefddycxdmfj.b01.azurefd.net h64.online-metrix.net;style-src 'self' 'unsafe-inline' *.microsoft.com aznb-ame-prod.azureedge.net try-ppe.dot.net markdowneditor-public-e0gpfpcwcbbze3ag.b01.azurefd.net markdowneditor-external-Public-fmgmfefddycxdmfj.b01.azurefd.net;img-src * data: blob:;frame-ancestors docs.microsoft.com *.docs.microsoft.com learn.microsoft.com *.learn.microsoft.com labclient.labondemand.com portal.azure.com *.portal.azure.com portal.azure.us portal.azure.cn ai.azure.com *.ai.azure.com learn-video.azurefd.net docs.azure.cn *.onecloud.azure-test.net *.sharepoint.com localhost:3000;worker-src 'self' blob: *.microsoft.com aznb-ame-prod.azureedge.net;form-action 'self' *.microsoft.com *.azure.cn *.pearsonvue.com;media-src 'self' blob: *.microsoft.com *.azure.cn videoencodingpublic-hgeaeyeba8gycee3.b01.azurefd.net videoencodingpubdevwus.blob.core.windows.net videoencodingpublicwus.blob.core.windows.net;base-uri 'self';font-src 'self' https: data:;object-src 'none';script-src-attr 'none';upgrade-insecure-requests
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