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A VPN kill switch blocks your internet the moment your VPN drops, preventing your real IP from being exposed. Learn how kill switches work, the difference between system-level and app-level protection, and how to test for DNS, WebRTC, and IPv6 leaks.
**Published:** April 14, 2026 **Category:** Cybersecurity **Author:** CyberShield Tips Editorial Team
Microsoft has disclosed a credential theft campaign by Storm-2561 that uses SEO poisoning to distribute trojanized VPN clients via fake websites and GitHub-hosted signed installers, stealing credentials with the Hyrax information stealer.
I trusted my VPN for three years before discovering it was leaking DNS requests. After testing 14 VPN services over 72 hours each, here's what I found — and how to check if yours is leaking right now.