LWN.net needs you!Without subscribers, LWN would simply not exist. Please consider signing up for a subscription and helping to keep LWN publishing The discoverer of the KRACK attacks against WPA2 encryption in WiFi is back with a new set of flaws in the wireless-networking protocols. FragAttacks is a sizable group of WiFi vulnerabilities that (ab)use the fragmentation and aggregation (thus "Frag"