Open
Cached
·
just now
82/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=theapp4u.com
Issuer
C=US, O=Let's Encrypt, CN=YR2
Valid From
June 18, 2026
Valid Until
September 16, 2026
23 days
Public Key
RSA
4096 bit
Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
B6:0C:19:02:F2:40:A2:EA:E3:74:BE:50:B4:5B:69:D0:9A:C0:D4:C7:0B:C3:A4:EC:FC:B7:D3:95:91:37:E9:AE
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
Missing
Not configured
X-Frame-Options
Present
SAMEORIGIN, SAMEORIGIN
X-Content-Type-Options
Present
nosniff, nosniff
Referrer-Policy
Present
same-origin, same-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Strict-Transport-Security header with max-age of at least 1 year
- • Add Content-Security-Policy header to prevent XSS attacks
- • 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