New tool and service can decrypt any PPTP and WPA2 wireless sessions using MS-CHAPv2 authenticationSecurity researchers released two tools at the Defcon security conference that can be used to crack the encryption of any PPTP (Point-to-Point Tunneling Protocol) and WPA2-Enterprise (Wireless Protected Access) sessions that use MS-CHAPv2 for authentication. MS-CHAPv2 is an authentication protocol created by Microsoft and introduced in Windows NT 4.0 SP4. Despite its age, it is still used as the primary authentication mechanism by most PPTP virtual private network (VPN) clients. MS-CHAPv2 has been known to be vulnerable to dictionary-based brute force attacks since 1999, when a...