China’s censorship system just got more complex and more fragile: A major upgrade to the Great Firewall added deep packet inspection for QUIC traffic, but new research shows this makes the system slower, easier to bypass, and vulnerable to abuse. Spoofing the firewall is now possible: Researchers found a way to trick the GFW into blocking any UDP traffic, even if it’s legitimate. This availability attack impacts cloud providers and reveals a new class of risks beyond censorship. Circumv...