WPA, or WiFi Protected Access, is one of the primary means of protecting Wi-Fi hubs. Ars Technica reports that Erik Tews, a PhD candidate from Germany is prepared to present a paper at PacSec this week that explains how he was able to crack it.

The exploit doesn't actually crack WPA keys, but does allow an attacker to sniff a packet, make minor modifications to the checksum and then use the access point to check the results. This man-in-the-middle attack could allow attackers to make ARP poisoning or Even DNS poisoning attacks.