SecretDNS 3.9.0 Update

SecretDNS (3.9.0) has been updated.

• Recommended Options allows for exception handling only for necessary sites, providing a more comfortable experience.

• Only fragment the SNI string to minimize speed degradation.
• Only specified domains can perform SNI fragmentation and DNS functions.
• Use by specifying a DNS server without changing Windows settings.
• Easily verify the domains you have accessed.
• Can be used in conjunction with proxy features.
• Can be used without installation.

Homepage

• SecretDNS: https://secretdns.kilho.net

Recommended Options

1. DNS Settings – Encryption (DOH)
2. SNI Settings – Fragmentation (Manual)
3. Specified List – Enter domains to bypass

History

• Version 3.9.0 (2026/05/23)
  - Addressed execution and display issues caused by certain security software like nProtect, Fasoo, MarkAny
  - Removed loading display that could conflict with some security software
  - Improved stability for execution in environments with security software errors
  
• Version 3.8.9 (2026/04/28)
  - Improved issues regarding shutdown and restart that occurred in some user environments
  - Strengthened response to delays and exceptions seen on specific PCs
  - Enhanced overall stability and reliability of operation
  
• Version 3.8.8 (2026/04/06)
  - Improved to prevent crashes caused by incorrect operation of Fasoo DRM
  - Significantly increased the whitelist for frequently used sites to enhance access smoothness
  - Organized setting application flow by improving the whitelist processing method
  - Separated user list and default list for more stable operation structure
  - Provided a stable runtime environment across diverse settings
  
• Version 3.8.7 (2026/03/17)
  - Improved execution and shutdown behavior through internal structure organization
  - Enhanced processing method for exceptions/specified lists during execution
  - Improved network operation stability
  
• Version 3.8.6 (2026/02/25)
  - Organized auto-start setting application logic to minimize exceptions
  

Related Links

• Update Notice: https://kilho.net/archives/notice/2940
• iPhone Bypass: https://gnu.kilho.net/tiptech/1330

License

• SecretDNS is Freeware.
• You can use it freely in any space such as companies, homes, government offices, and schools.
• It can be distributed freely anywhere.

Download

• Download from Kilho.net
• Download for Android

Frequently Asked Questions (FAQ)

• Why is it good to use the recommended options?
  It allows you to easily utilize features like preventing DNS tampering and bypassing SNI interception while ensuring both speed and security.
• Does the SNI fragmentation feature slow down connection speeds?
  No. This program only fragments the SNI string to minimize speed degradation.
• Does the DNS setting change the Windows system settings?
  No. It uses a self-contained DNS setting (DNS over HTTPS) without changing Windows settings, ensuring reliability and safety.
• What should I do if a specific site cannot be accessed?
  You can minimize access issues by setting a whitelist or a specified domain list.
• Can it be used without installation?
  Yes. A portable version is available, allowing immediate use without installation.