The next-generation Wi-Fi Protected Access protocol released 15 months ago was once hailed by key architects as resistant to most types of password-theft attacks that threatened its predecessors. On Wednesday, researchers disclosed several serious design flaws in WPA3 that shattered that myth and raised troubling new questions about the future of wireless security, particularly among low-cost Internet-of-things devices.
While a big improvement over the earlier and notoriously weak Wired Equivalent Privacy and the WPA protocols, the current WPA2 version (in use since the mid 2000s) has suffered a crippling design flaw that has been known for more than a decade: the four-way handshake—a cryptographic process WPA2 uses to validate computers, phones, and tablets to an access point and vice versa—contains a hash of the network password. Anyone within range of a device connecting to the network can record this handshake. Short passwor