Nico Golde has been working on several aspects of mobile telecommunication and the involved security threats in the last years. His interests range from GSM/UMTS protocols, to systems security (mostly unix based systems) to end-user device security. In the past he has done work on the SMS client implementations of various mobile phones and found issues in phones from most major vendors. He also participated in dissecting the security of the increasingly popular femtocell technology. Currently Nico is working with the product security team at Qualcomm.