My students Kermorvant, Jääskeläinen, Kurenmaa and Eulenberger broke WPA2 protected wireless LAN using WPS attack.
They’ve also broken WEP and brute forced bad WPA and WPA2 passwords. And they show how to buy and configure network cards for this.


Moral of the story: don’t use WEP, use WPA2. Don’t use WPS. And also encrypt end to end with SSH, PGP or other strong encryption. For more security content, read project intrusion blog and come to Penetration Testing course.
Obviously, it’s illegal to break into other peoples networks. Using the tools mentioned requires separated lab environment and other precautions.