Open
Cached
·
just now
95/100
SECURITY SCORE
Certificate Information
Subject
CN=trust.lemlist.com
Issuer
C=AT, O=ZeroSSL, CN=ZeroSSL ECC Domain Secure Site CA
Valid From
January 08, 2026
Valid Until
April 08, 2026
82 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
4E:14:A7:A3:75:4A:E7:A5:01:03:F8:B7:D7:D6:9C:91:11:FA:42:90:BF:7B:24:6F:A3:29:AB:D1:E7:9D:2E:D0
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; font-src; +3 more
default-src 'self'; script-src 'self' sentry.io *.sentry.io 'sha256-6WD/Zvqi+XT3pNQ0jyqkKOBwjaPRGtXJ+JHDaNylbe0='; font-src 'self' fonts.gstatic.com; style-src 'self' 'unsafe-inline' fonts.googleapis.com; img-src 'self' data:; connect-src 'self' sentry.io *.sentry.io
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
same-origin
Permissions-Policy
Present
accelerometer=(), ambient-light-sensor=(), autoplay=(), battery=(), camera=(), cross-origin-isolated=(), display-capture=(), document-domain=(), encrypted-media=(), execution-while-not-rendered=(), execution-while-out-of-viewport=(), fullscreen=(), geolocation=(), gyroscope=(), keyboard-map=(), magnetometer=(), microphone=(), midi=(), navigation-override=(), payment=(), picture-in-picture=(), publickey-credentials-get=(), screen-wake-lock=(), usb=(), web-share=(), sync-xhr=(), xr-spatial-tracking=()
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