Open
Cached
·
just now
95/100
SECURITY SCORE
Certificate Information
Subject
CN=app.skiff.com
Issuer
C=US, O=Let's Encrypt, CN=E7
Valid From
December 21, 2025
Valid Until
March 21, 2026
39 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
22:A3:4D:E7:70:EC:06:6D:D7:DD:F8:33:7E:BA:B3:9E:7D:12:A2:70:63:A8:4A:DB:D9:B9:55:0E:FE:A6:C3:8D
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
Good
default-src; script-src; script-src-elem; +11 more
default-src 'self'; script-src 'self' https://static.cloudflareinsights.com; script-src-elem 'self' 'unsafe-inline' https://platform.twitter.com/js/ https://platform.twitter.com/widgets.js https://www.youtube.com https://cdn.matomo.cloud/skiff.matomo.cloud/matomo.js https://skiff.matomo.cloud/plugins/HeatmapSessionRecording/; style-src 'self' 'unsafe-inline'; object-src 'none'; base-uri 'self'; connect-src 'self' https://hooks.slack.com/services/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 https://sdd9dua4.apicdn.sanity.io/ https://skiff.matomo.cloud https://skiff.zendesk.com https://static.cloudflareinsights.com https://marketing-site.skiff.com; font-src 'self' data:; frame-src 'self' https://platform.twitter.com/ https://www.youtube.com; img-src 'self' https://cdn.sanity.io https://i.ytimg.com; manifest-src 'self'; media-src 'self'; report-uri https://cspreports.skiff.com; worker-src 'self'
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
accelerometer=(), camera=(), geolocation=(), gyroscope=(), magnetometer=(), microphone=(), payment=(), usb=()
Recommendations
- • Strengthen CSP by removing 'unsafe-eval'
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