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.Circumvention tools are adapting fast: Open-source projects like Firefox, quic-go, and VPNs have already rolled out updates that slip past China's filters, using fragmentation, fake packets, and other clever tricks.Design shortcuts reveal deeper flaws: From skipping fragmented packets to relying on port-based heuristics, the firewall's rules hint at a rushed system struggling to scale, and possibly breaking under its own complexity.The post China's Great Firewall Upgrade Backfires - And That's a Bigger Story Than You Think appeared first on Techreport.