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SECURITY SCORE
Certificate Information
Subject
CN=app.blast.io
Issuer
C=US, O=Let's Encrypt, CN=E7
Valid From
February 01, 2026
Valid Until
May 02, 2026
85 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
2B:E2:EA:72:F6:1D:FA:8B:27:E7:A8:24:3F:5B:BA:E0:BB:C2:4A:DB:1A:E4:53:FB:D8:62:68:EE:52:4D:20:28
Alternative Names
Security Configuration
TLS Protocols
TLS 1.0
TLS 1.1
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
Warnings
- • TLS 1.1 is deprecated and should be disabled
- • TLS 1.0 is deprecated and should be disabled
HTTP Security Headers
Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Good
connect-src; default-src; font-src; +6 more
connect-src 'self' https://app.blast.io https://bundler.biconomy.io https://paymaster.biconomy.io https://fonts.googleapis.com https://fonts.gstatic.com https://app.across.to https://waitlist-api.prod.blast.io https://foundation-api.prod.blast.io https://wallet-api.prod.blast.io https://fast-track.blast.io https://rpc.blast.io https://blast.din.dev https://blast-rpc.publicnode.com https://rpc.ankr.com https://rpc.envelop.is https://blast.blockpi.network https://eth.merkle.io https://cloudflare-eth.com https://ethereum.publicnode.com https://eth.llamarpc.com https://eth-mainnet.public.blastapi.io https://mainnet.optimism.io; default-src 'self'; font-src 'self' https://fonts.gstatic.com; frame-ancestors 'none'; frame-src https:; img-src 'self' data: https://assets.blast.io https://cdn.blast.io; media-src 'self' https://assets.blast.io; script-src 'self' https://assets.blast.io https://storage.googleapis.com/workbox-cdn/releases/; style-src * 'unsafe-inline'
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Strict-Transport-Security header with max-age of at least 1 year
- • Strengthen CSP by removing 'unsafe-eval'
- • Add X-Content-Type-Options: nosniff
- • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
- • 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