Identity management challenges Essay Example | Topics and Well Written Essays - 750 words

Identity management challenges - Essay Example The same user profile may be replicated a number of times in different applications, each time with a different level of access permission. In large organizations competently managing user profiles - ensuring that they have the correct authorizations - is a time consuming, and therefore expensive - procedure for IT staff and managers. Increased regulatory compliance requirements such as Data Protection legislation in the European Union and Sarbanes-Oxley across the US mean that organizations are at greater risk of financial penalties and the loss of goodwill if they are perceived to be non-compliant. In a typical network each account holder needs to be authenticated, authorized and granted access permissions to network objects. In order to share data users must be able to access the same network objects. This requires the IT users and mangers to spend precious time walking over the same ground, with perhaps one or two changes in access permission on a case by case basis. For organizations with thousands of network users this is neither time nor cost effective for IT teams/managers or ultimately network users. IAM solutions are relatively new, and consist of an integrated stable of tools. Increasingly these tools are based upon open standards to ensure as much backward compatibility as possible with legacy systems. The tools assist organizations to streamline identity management, manage data consistently across different platforms and hence enhance regulatory compliance. Well known tools include: Centralized user directories (such as light-weight directory access protocol, LDAP) - to track a user's credentials; Password management systems - allow users to reset their passwords using a variety of means of authentication; Access management (or provisioning) systems - manage user access to multiple systems. Such systems usually provide workflow capabilities to handle change requests from users or departments. Web access management tools - primarily used to manage user access to multiple web-based applications. Single sign on systems - allow users to sign on once for access to multiple applications. Costing an IAM integration project depends on the number of users, types of applications already installed, platform interoperability, the time-scale, the amount of expertise within the organization and so forth, leading to a wide variation in final project costs. It is very difficult to centrally manage multiple applications, particularly when they reside on different operating systems and hardware platforms, with different authentication and authorization protocols. A minimum cost for implementing an IAM is $100,000 per annum in license fees (in a market which is predicted to grow from $1.2b in 2005 to $8b by 2009) (Tynan, page 2). The most costly and time consuming area of digital identity management is support for legacy systems (such as mainframes and older applications). Such systems rarely support external user management tools in the

Testing the relationship between the stock market and Time series Essay

Testing the relationship between the stock market and Time series model - Essay Example ionship between the stock market and Time series model† is aimed at explaining the volatility modelling used for stock market analysis, thus evaluating the performance of the ARCH and GARCH models. Data from four Asian stock market indices like Hang Seng index, Jakarta index, KLSE index and Stock exchange of Thailand index during 2000 to 2006 have been used in this study. The analysis helped to reach a conclusion that EGARCH is the best model among the GARCH family which helps in estimating the volatility of stock market to predict the stock market for future investment. By analysing recent developments in the stock exchanges gathered from newspaper reports, it is seen that a common question could be posed among the investors in stock. The question is â€Å"Is the stock market predictable?† It has become the main concern of many researchers for the last 20 years due to the up and down fluctuations leading to a large volatility. There are many stock market prediction tools contributed by different researchers which are helpful to both the public and institutions. There arises a question as to why a tool is required to predict the stock market due to the complexity of the stock market which is mainly influenced by economical, political, and monetary features. However, the fact is that markets’ reaction against each economic shock (i.e. bad news and good news) may vary from country to country due to their own macro economical and financial characteristics. For example, statistics show that Asian shares have fallen dramatically which is as follows: Tokyo by 11%, London Stock exchange by 5.7%, Hang Seng by 7.6%, India’s by 4%, Australia by 6.7% etc. (Wall Street shares yo-yo n.d.). For that reason, it is necessary to use several models to forecast volatility as well as evaluate them. It is seen that South Eastern stock exchanges have responded with lesser impact to the economic recession than European and American economies. The selected countries for this