**Epilogue:**

178 Security Enhanced Applications for Information Systems

However, there is also a wrong situation when contract between service provider and other parties isn't SLA – since the services tier has been defined by (main) buyer. Every field or range of services should have defined "tier of services". SLA can determine level of availability, usability, efficiency, performance or other characteristics and services, such as mode of charge. "Tier of service" can also be mentioned as goal and minimum which enable users to be informed about expected minimum that ensures measurable, usually average aimed value that implies level of performance. Some contracts can arrange penalties in case of not respecting SLA. In practice SLA is sometimes used to define relations for contracted

In everyday life more and more people are using services of which they don't know the precise definitions, or they haven't been timely explained to them, so they don't know the possible consequences. For instance, widely used net-banking represents a service which is simply defined web service. User in this kind of situations usually doesn't know where the service provider is, that is, where data are located, though he's not introduced with complete infrastructure, and there's no need of that. Further on, mobile phones made these services free of time and geographic location. Advantages are impressive, risk considerably lower, but still possible. Provider of such services is obliged to ensure user with proper information of all possible outcomes during the service providing and afterwards, especially

Among generally accepted services one could count the GPS (Global Positioning System) navigator for automobiles. GPS navigator is using spatial information about location and time anywhere on the Earth, or near it, GIS (Geographic Information System) based upon Global Navigation Satellite System (GNSS) in all weather conditions, with undisturbed line of views from four or more GPS satellites. It is maintained by USA Government and is freely available to all using GPS receiver with some technical restraints that can be removed only for military users. (http://en.wikipedia.org/wiki/Global\_Positioning\_System). Hence, to most GPS users GIS service represents cloud service or it can be treated that way. GIS is then proclaimed as a system that represents integrated hardware and software with data for collecting, managing, analysing and presenting all modes of geographic information. The purpose of GIS is to enable insight, understanding, making enquiries with interpretation and visualisation of data in form of maps, graphs, reports and charts. Procedure of formation and models of reports are maximally simplified so to be available and understandable to all users. Still, the basic advantage of GIS technology is a possibility of its integration into any form of information system with purpose of ensuring the most

In this part of paper authors analyse hypothetical case in which automobile accident has happened due to mistakes in navigation caused by wrong data provided at the same moment. Emphasis has been given to possible legal consequences of such case, but primarily

Owner of an expensive automobile equipped with equally expensive devices that include GPS is a male person in his thirties. During a longer journey he has been using services of

to legal shortage of defined relations between service provider and service user.

**4.1 Postlude: A hypothetical use case, if the cloud computing is guilty?** 

if there is a possibility for user to suffer from any sort of damage.

deliveries of services or performances.

qualitative business.

**Hypothetical case:** 

Afore mentioned hypothetical case has all characteristics required to fall a dispute and to claim indemnification of a victim. For purpose of this paper it is important to determine an essential need for legal definition of using services, which are, in this situation, cause of a possible accident.

 Though it is disputable, for this hypothetical case and paper it is needed to determine an important fact: how is GIS treated. Is that Cloud computing service or not? If it is, in which form of Cloud computing a victim could be introduced? These are primary conditions that could be used in eventual dispute with purpose of indemnification.

There is a version of web GIS concept according to which web GIS is every GIS using web technology, or, in narrower sense, it is every GIS that uses web to connect system components. (Fun Sun, 2010). Every such service should necessarily have its own SLA – contract of usage.

Some Service Level Agreement (SLA) ere enforceable as contract but many are really agreements that are more along the lines on operating level agreements (OLA) and may not have the force of law. It is good to have an attorney review this document before you make a major commitment to a Cloud provider. (Sosinsky, 2011).

Indemnification of a victim will necessarily depend upon quality of SLA, its content and form of declaration, if such exists. Since usage of GPS devices is an independent fact in this case, arbiter, seller of GPS devise and selling of devices emerge as factor that additionally complicates described situation. However, accident hasn't been caused by device but instead by data and information provided by device. Within these circumstances responsibility is thrown to provider of data basis and mode of its delivery since responsibility for data (or data basis in information science terms) service provider responds for consequences when data haven't been used properly.

This hypothetical case is only an attempt of directing attention to an urge for more intensive legal treatment of relations that can emerge between service providers and service users within Cloud computing. Service provider should be prepared to provide SLA palette that will correspond to implemented form of Cloud computing. Public cloud carries within dangers similar to outcomes named in a prior hypothetical case. Service provider is usually, in practice, somehow prudishly concealed behind institution of help desk that usually doesn't provide sufficient help, but only smooth communication. Therefore a transparency of relations and their strict regulation is most required.
