Pricing and Investments in Internet Security: A Cyber-Insurance Perspective

Internet users such as individuals and organizations are subject to different types of epidemic risks such as worms, viruses, spams, and botnets. To reduce the probability of risk, an Internet user generally invests in traditional security mechanisms like anti-virus and anti-spam software, sometimes also known as self-defense mechanisms. However, such software does not completely eliminate risk. Recent works have considered the problem of residual risk elimination by proposing the idea of cyber-insurance. In this regard, an important research problem is the analysis of optimal user self-defense investments and cyber-insurance contracts under the Internet environment. In this paper, we investigate two problems and their relationship: 1) analyzing optimal self-defense investments in the Internet, under optimal cyber-insurance coverage, where optimality is an insurer objective and 2) designing optimal cyber-insurance contracts for Internet users, where a contract is a (premium, coverage) pair

Incentive Mechanisms for Internet Congestion Management: Fixed-Budget Rebate versus Time-of-Day Pricing

Mobile data traffic has been steadily rising in the past years. This has generated a significant interest in the deployment of incentive mechanisms to reduce peak-time congestion. Typically, the design of these mechanisms requires information about user demand and sensitivity to prices. Such information is naturally imperfect. In this paper, we propose a \emph{fixed-budget rebate mechanism} that gives each user a reward proportional to his percentage contribution to the aggregate reduction in peak time demand. For comparison, we also study a time-of-day pricing mechanism that gives each user a fixed reward per unit reduction of his peak-time demand. To evaluate the two mechanisms, we introduce a game-theoretic model that captures the \emph{public good} nature of decongestion. For each mechanism, we demonstrate that the socially optimal level of decongestion is achievable for a specific choice of the mechanism's parameter. We then investigate how imperfect information about user demand affects the mechanisms' effectiveness. From our results, the fixed-budget rebate pricing is more robust when the users' sensitivity to congestion is "sufficiently" convex. This feature of the fixed-budget rebate mechanism is attractive for many situations of interest and is driven by its closed-loop property, i.e., the unit reward decreases as the peak-time demand decreases.Comment: To appear in IEEE/ACM Transactions on Networkin

Universal service obligations in developing countries

This paper develops a model to analyze the impacts of asymmetric information on optimal universal, service policy in the public utilities of developing countries. Optimal universal service policy is implemented using two regulatory instruments: pricing and network investment. Under discriminatory pricing asymmetric information leads to a higher price, and smaller network in the rural area, than under full information. Under uniform pricing, the price is also lower but the network is even smaller. In addition, under both pricing regimes, not only the firm, but also taxpayers have incentives to collude with the regulator.Environmental Economics&Policies,Knowledge Economy,Insurance&Risk Mitigation,Economic Theory&Research,Insurance Law,Education for the Knowledge Economy,Knowledge Economy,Economic Theory&Research,Environmental Economics&Policies,Geographical Information Systems

Congestion, Private Peering and Capacity Investment on the Internet.

This paper presents a model of private bilateral and multilateral peering arrangements between Internet backbone providers when the network is congested. We study how different forms of interconnection and the competitive conditions of the market affect backbones' investments in network and peering point capacities. We show that network and peering point capacities are equilibrium complements; increasing competition reduces capacity investments (under-investment), thus worsening the quality of service both with multilateral and bilateral peering; under bilateral peering the inefficiency is less severe. Because of under-investment, welfare may be lower when the market is more competitive. We also show that asymmetries between backbones, which can take the form of uneven content distribution or product differentiation, may reduce under-investment and improve the quality of service. The introduction of an "inverse capacity interconnection fee" where providers pay each other a fee which is negatively correlated with their installed capacity may play the role of a coordinating mechanism towards a Pareto superior outcome.Internet, peering, congestion, QoS, capacity investment, interconnection

Comprehensive water resources management : a concept paper

The world is entering a period of intense competition for limited supplies of water for alternative uses - in agriculture, in urban and industrial supplies, for recreation, by wildlife, for human consumption, and to maintain environmental quality. Manifestations of this competition and our current ability to deal with it can be observed in many parts of the world. A large irrigation project in India does not operate because water has been diverted to the rapidly growing city of Pune. In China, industries are reducing their production because of water shortages. In California, selenium salts leached by irrigation are killing wildlife. Bank irrigation projects in Algeria are now competing with Bank urban water supply projects for the same water. Many proposed irrigation projects and most hydro project proposals are on hold because of environmental concerns. Until recently, the approaches taken in water planning management by planners in the developing countries and by analysts at the funding agencies were, by and large, appropriate and adequate to the task at hand. The increased competition for water, however, makes most of the project-by-project planning methods inadequate. The author discusses new approaches that are needed to integrate water resource use among different users and across different economic sectors.Water and Industry,Water Conservation,Environmental Economics&Policies,Town Water Supply and Sanitation,Water Supply and Sanitation Governance and Institutions

Regulatory tradeoffs in designing concession contracts for infrastructure networks

Network activities typically involve collecting a good or service (such as electric utilities, phone services, and rail transportation) from many producers or distributing them to many users. Producers and users are often widely scattered, geographically. Close financial integration of networks is justified on the basis of economies of scope and scale and the benefits from pooling and coordinating. In many countries, network operators are completely integrated publicly-owned firms (private firms being deemed insufficiently efficient or equitable). Challengers of this practice contend that the inefficiency resulting from lack of competition outweighs the gain from economic integration. With reform, some competitive mechanisms can be introduced even when monopoly seems the best option for delivering a service. But conflicts between policymakers'objectives -including efficiency, equity, speed, speed of reform, and signaling- influence the design of concession contracts for infrastructure network services (including communications and transportation services). Competition begins with the unbundling of various stages of delivery. Then competitive bidding is popular, with the public authority keeping property rights on productive assets but conceding their operation to a private firm. The winner gets the right to maximize profits, within limits (having to provide universal services, for example, and avoid price discrimination). In liberalizing the delivery of a service, policymakers must consider not only efficiency but also social and fiscal feasibility. The authors discuss how relevant information asymmetry is in contract design and the award and regulatory processes. They also discuss how to design pricing to accommodate the obligation to provide universal service. To illustrate, they describe Argentina's experiment in liberalization, which is increasingly viewed as a model for changing private sector and government involvement in infrastructure services. Beginning in 1989, Argentina began privatizing utilities and transport services, because the government had decided that it could no longer afford to subsidize those services or finance the investments needed for their effective operation. To introduce competition, the government unbundled services and introduced competitive bidding. It also created sector-specific regulatory agencies to protect consumers from private monopolies and to protect the private concessionaires from government micromanagement. Making concession-based reform and contracted-based regulation of private monopolists sustainable will require strengthening regulatory agencies, clarifying their terms of reference and accountability, and better separating the responsibilities of sector ministers and regulators.Health Economics&Finance,Environmental Economics&Policies,Economic Theory&Research,Labor Policies,International Terrorism&Counterterrorism,Environmental Economics&Policies,Health Economics&Finance,Education for the Knowledge Economy,Knowledge Economy,Economic Theory&Research

Congestion and tax competition in a parallel network

The purpose of this paper is to study tax competition on a parallel road network when different governments have tolling authority on the different links of the network. Reflecting many current situations in Europe, each link is used by both local and transit traffic; moreover, transit has a choice of route. Each government maximises the surplus of local users plus total tax revenues in controlling local and transit transport. Three types of tolling systems are considered: (i) toll discrimination between local traffic and transit, (ii) uniform tolls on local and transit transport, (iii) local tolls only. The results suggest that the welfare effects of introducing transit tolls are large, but that differentiation of tolls between local and transit transport as compared to uniform tolls does not yield large welfare differences. It is also found that the welfare effects of coordination between countries are relatively small in comparison with the welfare gains of tolling transit. The numerical model further illustrates the effects of different transit shares and explicitly considers the role of asymmetries between countries. Higher transit shares strongly raise the Nash equilibrium transit toll and slightly decrease local tolls. With asymmetric demands, the welfare gains of introducing differentiated tolling rise strongly for the country with lower local demand.congestion pricing, transit traffic