User accounts are increasingly becoming the targets of internet hackers. Once a username and password have been obtained, the combination of these gives cyber thieves access to critical company services such as cloud storage systems, e-mail accounts, and online shop accounts. In order to tackle the problem of identity theft in the digital world, Vodafone Germany and Giesecke & Devrient (G&D) have worked together to develop Vodafone Secure Login as a solution specifically for corporate and public sector customers which acts as a second authentication element in addition to a password. The solution is based on a SIM card and incorporates a special security mechanism.