Moxie Marlinspike, the security and privacy researcher known for his SSLStrip, Convergence and RedPhone tools, has released a tool that can crack passwords used for some VPNs and wireless networks that rely on encryption using Microsoft s MS-CHAPv2 protocol. ChapCrack is designed to enable users to crack passwords that are used to help secure PPTP connections. The tool relies on the computing power of a system built by Pico Computing, a specialized manufacturer of hardware for applications such as cryptography that require large amounts of dedicated processing power.
Source: https://threatpost.com/new-tool-moxie-marlinspike-cracks-some-crypto-passwords-073012/76860/