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This paper presents a novel approach to the design of self-adaptive service-oriented applications based on a new model called service tiles. The approach allows designers to develop a service-oriented system by building an assembly of component services that accomplishes the given goal. The assembly is computed automatically starting from the specification(More)
In Service Oriented Architectures (SOAs) services invoked in a composition can be replaced by other services, which are possibly discovered and bound at runtime. Most of the research efforts supporting this replacement assume that the interface of the interchangeable services are the same and known at design time. Such assumption is not realistic since it(More)
—We propose the use of forensic requirements to drive the automation of a digital forensics process. We augment traditional reactive digital forensics processes with proactive evidence collection and analysis activities, and provide immediate investigative suggestions before an investigation starts. These activities adapt depending on suspicious events,(More)
Applications that continuously gather and disclose personal information about users are increasingly common. While disclosing this information may be essential for these applications to function, it may also raise privacy concerns. Partly, this is due to frequently changing context that introduces new privacy threats, and makes it difficult to continuously(More)
Research about service oriented architectures produced, in the last years, some frameworks that enable the development of self-adaptive service compositions supporting dynamic binding. A developer can specify, at design time, an abstract service. At run time a concrete implementation of the abstract service is dynamically selected. In this scenario service(More)
Service-oriented applications are typically built out of existing web-services (WSs) possibly made available by third party vendors. This requires that the application has to be able to evolve when the composing WSs are not anymore available or when new, more useful ones, are published. In this setting, an important problem is to understand how to use WSs(More)
—An important problem that arises during the execution of service-based applications concerns the ability to determine whether a running service can be substituted with one with a different interface, for example if the former is no longer available. Standard Bounded Model Checking techniques can be used to perform this check, but they must be able to(More)
—An important problem that arises during the execution of service-based applications concerns the ability to determine whether a running service can be substituted with one with a different interface, for example if the former is no longer available. Standard Bounded Model Checking techniques can be used to perform this check, but they must be able to(More)
In a previous work we presented an approach to allow invocation of services whose interface and behavior differ from each other. Such approach requires the definition of scripts by some human being able to completely understand the mismatches and properly combine the mapping functions. Furthermore, such approach requires an intensive effort from a system(More)