Kuaiya client v3.7 changelog: new kill switch feature

Lead: On August 6, Kuaiya VPN released client v3.7, headlined by a new kill switch feature. It solves an easily overlooked but critical problem: when the encrypted tunnel drops unexpectedly, how to prevent traffic falling back to direct and exposing your real IP.

What the kill switch solves

Accelerator tunnels are not always stable; network jitter, server maintenance and protocol switches can briefly drop them. Traditionally, traffic then falls back to direct, and visited sites immediately see your real IP. Kuaiya VPN's kill switch cuts the entire network connection the moment it detects a tunnel drop, until the tunnel recovers, physically preventing leakage.

Kuaiya v3.7 kill switch cover

v3.7 changelog

How to enable the kill switch

The kill switch is enabled by default after upgrading to v3.7. You can confirm or disable it under Settings > Security. Kuaiya recommends keeping it on, especially on public WiFi or when strong privacy is required.

Kuaiya v3.7 kill switch settings

Real case: no more "naked" disconnects

Mr. Sun handles internal company affairs on public networks and previously saw the tunnel drop silently, with traffic routing directly. After upgrading, a server maintenance event dropped the tunnel and the client immediately cut the network with a "Disconnected" notice — no direct traffic occurred.

"I used to fear leaks on disconnects. Now the kill switch has my back." — Mr. Sun, enterprise user

Data and verification

Kuaiya VPN internal tests show the kill switch responds in under 1 second from tunnel drop to network cut, with zero real-IP leaks across 500 beta users in simulated disconnects.

Conclusion

The kill switch completes Kuaiya VPN's security stack alongside encryption, no-logs and DNS protection. Existing users can upgrade in-client; new users can free VPN download v3.7 for a safer connection.