SecretDNS 3.9.0 Update

SecretDNS (3.9.0) has been updated.

• Recommended Options allow you to exclude only the necessary sites for a smoother experience.

• Minimizes speed loss by fragmenting only the SNI strings.
• Can fragment SNI and perform DNS functions exclusively for specified domains.
• Use designated DNS servers without changing Windows settings.
• Easily check the domains you are connected to.
• Can be mixed 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 some security programs like nProtect, Fasoo, MarkAny
  - Removed loading indication that could conflict with some security programs
  - Improved stability to run more reliably in environments with security program errors
  
• Version 3.8.9 (2026/04/28)
  - Improved issues related to closing and restarting that occurred in certain user environments
  - Strengthened response to delays and exceptions that appeared on specific PCs
  - Enhanced overall stability and operational reliability
  
• Version 3.8.8 (2026/04/06)
  - Improved to prevent crashes due to incorrect behavior of Fasoo DRM
  - Vastly added frequently used sites to the whitelist to improve accessibility
  - Improved the handling method of the whitelist to streamline the settings application process
  - Separated user list and default list for more stable operation structure
  - Provided a stable execution environment across various setups
  
• Version 3.8.7 (2026/03/17)
  - Improved execution and termination operations through internal restructuring
  - Enhanced the handling methods for exceptions/specified lists during operation
  - Improved network operational stability
  
• Version 3.8.6 (2026/02/25)
  - Minimized exceptions by organizing the logic for applying automatic start settings
  

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 without space constraints, whether in a company, home, public office, or school.
• It can be freely distributed anywhere.

Download

• Download from Kilho.net
• Download for Android

Frequently Asked Questions (FAQ)

• Why is it good to use recommended options?
  It allows easy access to features such as preventing DNS tampering and bypassing SNI eavesdropping while ensuring both speed and security.
• Does the SNI fragmenting feature slow down speed?
  No. This program fragments only the SNI strings to minimize speed loss.
• Does the DNS configuration change Windows system settings?
  No. It uses its own DNS settings (DNS over HTTPS) without changing Windows settings for stable and secure operation.
• What to do if a certain site cannot be accessed?
  You can minimize connection issues by setting a whitelist or a list of specified domains.
• Can it be used without installation?
  Yes. It offers a portable version, so you can use it immediately without the installation process.