Outflanking and securely using the PIN/TAN-System

The PIN/TAN-system is an authentication and authorization scheme used in e-business. Like other similar schemes it is successfully attacked by criminals. After shortly classifying the various kinds of attacks we accomplish malicious code attacks on real World Wide Web transaction systems. In doing so we find that it is really easy to outflank these systems. This is even supported by the users' behavior. We give a few simple behavior rules to improve this situation. But their impact is limited. Also the providers support the attacks by having implementation flaws in their installations. Finally we show that the PIN/TAN-system is not suitable for usage in highly secure applications.Comment: 7 pages; 2 figures; IEEE style; final versio

The Relationship between Supply Chain Coordination and Quality Assurance Systems: A Case Study Approach on the German Meat Sector

The German meat industry faces a high demand for food safety and traceability. After several meat scandals in the recent past, efforts have to be made to regain consumer trust and to assure access to export markets. Apart from a few niche markets, there is no focal company in the German pork supply chain which efficiently coordinates food chain information, harmonizes the multiplicity of different IT systems or takes on professional public relations in charge of the whole sector. In cases of food crises, essential up- and downstream information slowly flows across the supply chain which hinders both seamless traceability and the harmonization of production processes between the various stages of the supply chain. This contribution focuses on the opportunities for more efficient coordination based on spot market environments. With reference to the theory of organization economics, a case study of the QS Qualität und Sicherheit GmbH as the leading certification scheme that addresses the German meat industry was carried out. Several non-classical certification activities which fall within the scope of coordination were identified with QS. Based on the assumption that the company continuously improves the coordination of the supply chain, there are opportunities for the meat sector as a whole which are pointed out in the conclusion.Agribusiness, Agricultural and Food Policy, Farm Management, Food Consumption/Nutrition/Food Safety,