SSL Verification Bypassed
The server's SSL certificate could not be verified. The analysis was completed using insecure mode. Data may be less reliable.
Reason:
Hostname Mismatch - certificate is issued for domain.whois.co.kr, domain.naverworks.co.kr, m.whois.co.kr, m.yesnic.com, www.yesnic.com, yesnic.com, not for mail.yesnic.com
Open
Cached
·
just now
8
Headers
HTTP Security Headers
Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
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
- • Add Content-Security-Policy header to prevent XSS attacks
- • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
- • Add X-Content-Type-Options: nosniff
- • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
- • Consider adding Permissions-Policy to control browser features
Performance Headers
1 headers
Transfer-Encoding
Performance
chunked
Caching Headers
3 headers
Cache-Control
Caching
no-cache
Expires
Caching
Thu, 19 Nov 1981 08:52:00 GMT
Pragma
Caching
no-cache
Content Headers
1 headers
Content-Type
Content
text/html; charset=UTF-8
Server Headers
1 headers
Server
Server
Apache
CORS Headers
0 headers
No CORS headers found
Cookies Headers
1 headers
Set-Cookie
Cookies
PHPSESSID=frmdfho2m7n91rttiat4cg6qo6; path=/; secure; SameSite=None
Other Headers
1 headers
Date
Other
Sun, 01 Feb 2026 05:51:47 GMT
Recommendations
Enable compression (gzip/brotli) to improve performance