Open
Cached
·
just now
91/100
SECURITY SCORE
Certificate Information
Subject
C=GB, L=London, O=Department for Transport, CN=*.dft.gov.uk
Issuer
C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Thawte TLS RSA CA G1
Valid From
October 07, 2025
Valid Until
November 07, 2026
295 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
A1:E2:1C:6C:24:47:A5:B3:AC:E3:4B:AC:89:7A:B5:A0:B8:50:48:2A:0A:2B:9E:A2:D2:D6:A8:DD:AF:F9:B3:31
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
Forward Secrecy
Limited
(Check cipher configuration)
Warnings
- • TLS 1.3 is not supported (recommended)
HTTP Security Headers
Status
Strict-Transport-Security
Present
max-age=31536000; preload
Content-Security-Policy
Strong
default-src; base-uri; img-src; +8 more
default-src 'self'; base-uri 'none'; img-src 'self' *.publishing.service.gov.uk www.gov.uk *.dev.gov.uk www.google-analytics.com ssl.google-analytics.com stats.g.doubleclick.net www.googletagmanager.com www.region1.google-analytics.com region1.google-analytics.com region1.analytics.google.com www.google.co.uk lux.speedcurve.com assets.digital.cabinet-office.gov.uk https://img.youtube.com https://i.ytimg.com; script-src 'self' www.google-analytics.com ssl.google-analytics.com stats.g.doubleclick.net www.googletagmanager.com www.region1.google-analytics.com region1.google-analytics.com region1.analytics.google.com www.google.co.uk www.gstatic.com *.ytimg.com www.youtube.com www.youtube-nocookie.com 'nonce-UEmDV0Be0AHbuIOl6gcXSw=='; style-src 'self' www.gstatic.com; font-src 'self'; connect-src 'self' *.publishing.service.gov.uk www.gov.uk *.dev.gov.uk www.google-analytics.com ssl.google-analytics.com stats.g.doubleclick.net www.googletagmanager.com www.region1.google-analytics.com region1.google-analytics.com region1.analytics.google.com www.google.co.uk lux.speedcurve.com gds-single-consent-staging.app gds-single-consent.app; object-src 'none'; frame-src 'self' *.publishing.service.gov.uk www.gov.uk *.dev.gov.uk www.youtube.com www.youtube-nocookie.com; frame-ancestors 'self' *.publishing.service.gov.uk www.gov.uk *.dev.gov.uk; report-uri https://csp-reporter.publishing.service.gov.uk/report
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Present
interest-cohort=()
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
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