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1st INternational Workshop on TRUstworthy Service-Oriented Computing 

Affiliated with 5th IFIP International Conference on Trust Management 

Copenhagen, June 27, 2011, Technical University of Denmark


Service-Oriented Computing (SOC) is an emerging paradigm for distributed 
computing aiming at changing the way software applications are designed, 
delivered and consumed. SOC is triggering a radical shift to a vision of the 
Web as a computational fabric where loosely coupled services (such as Web 
services) interact publishing their interfaces inside dedicated repositories, 
where they can be searched by other services or software agents, retrieved and 
invoked, always abstracting from the actual implementation. The proliferation 
of such services is considered the second wave of evolution in the Internet 
age. In order to realize this vision and to bring SOC to its full potential, 
several security challenges must still be addressed. In particular, consensus 
is growing that this "service revolution" will not eventuate until we resolve 
trustworthiness?related issues. For instance, lack of consumer trust and Web 
service trustworthiness still represent two critical impediments to the success 
of Web service-oriented systems. Although software trustworthiness is a wide 
topic, far from being an issue only for SOC, the intrinsic openness of this 
vision makes it even more crucial. The SOC vision, indeed, faces with a large, 
open and dynamic service-oriented environment where anyone can publish his own 
(even malicious) services. In this scenario, a client (human or software agent) 
faces a dilemma in having to make a choice from a bunch of services offering 
the same functionalities. Thus, selecting the right service requires addressing 
at least two key issues:

1. Discovering the service on the basis of its functionality 

2. Evaluating the trustworthiness of the service (how well the service will 

Although concrete applications coping with the first issue are far from being 
widely adopted, the significant effort spent on its investigation in the 
current literature is recognizable (OWL-S and the SOAP/WSDL/UDDI Web service 
framework to mention only some contributions). Instead, service trustworthiness 
is still in its infancy and represents a barrier for widening the application 
of service-oriented technologies. The open and dynamic nature of the SOC vision 
raises new challenges to traditional software trustworthiness. Indeed, in a 
traditional closed software system all of its components and their 
relationships are pre-decided before the software runs. Therefore, each 
component can be thoroughly tested as well as its interactions with other 
components before the system starts to run. This is not possible in the SOC 
vision due to its openness and dynamicity. For instance, in the Web service 
dynamic invocation model, it is likely that users may not even know which Web 
services they will use, much less their trustworthiness. Traditional 
dependability techniques, such as correctness proof, fault tolerant computing, 
testing, and evaluation and more in general "rigorous software development" 
might be used to improve the trustworthiness of Web services. However, again 
these techniques have to be redesigned to handle the dynamicity and openness of 

The 1st INternational Workshop on TRUstworthy Service-Oriented Computing 
(INTRUSO 2011) aims at bringing together researchers, engineers and 
practitioners interested in all the different aspects of Trustworthiness and 
Dependability in service-oriented environments. Since the overall goal of 
Trustworthy SOC includes the investigation of several cross-disciplinary issues 
such as a deep understanding of trust vs. trustworthiness in a service domain, 
trust-based approaches for service rating and selection (reputation systems, 
recommendation systems, referral networks.), service dependability, service 
evaluation/monitoring/testing, etc., a synergy between different scientific 
communities and research disciplines is needed. For this reason, although the 
workshop seems naturally focused on SOC-specific issues, contributions from 
different disciplines such as philosophy, sociology, psychology, communication 
sciences, as well as from computer science specific sub-disciplines such as 
software engineering and dependability are welcomed and encouraged. 

The workshop is expected to stimulate discussions about the future development 
of appropriate models, methods, notations, languages and tools for building a 
variety of trustworthy service-oriented systems. 

Topics of interests include, but are not limited to:

* Trust and trustworthiness in the Web service domain
* Trust-based approaches for Web service rating and selection (reputation 
systems, recommendation systems, referral networks, .)
* Trust negotiation for Web services
* Service monitoring and testing
* Service dependability
* Fault-tolerant mechanisms for SOC
* Security for SOC
* Architectures for trustworthy SOC
* Software engineering methodologies for trustworthy SOC (e.g., deployment life 
cycle for trustworthy services)
* Policy assurance for trustworthy SOC
* Formal methods and frameworks for trustworthy services
* Quality of Service (QoS) for service discovering and trustworthiness
* Case studies on trustworthy SOC
* Industrial experiences in the adoption of trust-based approaches for SOC
* Rigorous Software Development to ensure service trustworthiness

Submitted full papers must not exceed 16 pages in length, including 
bibliography and well-marked appendices. Papers can be submitted using the 
following link on EasyChair:


Please use the LNCS templates and style files available from:

Submitted papers will be evaluated by the program committee and chosen for 
presentation based on their scientific contribution and relevance to the topics 
of the workshop. At least one author of each accepted paper must register to 
the workshop and participate presenting the paper.

The collection of the accepted papers of all the IFIPTM workshops will be 
published in a technical report at Technical University of Denmark (DTU). We 
have already agreed with the editor of the international Journal of Internet 
Services and Information Security to have a special issue in November 2011 with 
extended versions of best papers selected from IFIPTM workshops.

Important Dates

* April 18, 2011: Submission of papers
* May 16, 2011: Notification of acceptance
* June 1, 2011: Camera-ready
* June 27, 2011: INTRUSO Workshop


* Nicola Dragoni, Denmark Technical University (DTU), Denmark - n...@imm.dtu.dk
* Nickolaos Kavantzas, Oracle, USA - nickolas.kavant...@oracle.com
* Fabio Massacci, University of Trento, Italy - massa...@disi.unitn.it
* Manuel Mazzara Newcastle University, UK - manuel.mazz...@newcastle.ac.uk

Program Committee

* Mohamed Faical Abouzaid, Ecole Polytechnique de Montréal, Canada
* Mario Bravetti, University of Bologna, Italy
* Achim D. Brucker, SAP, Germany
* Schahram Dustdar, Vienna University of Technology, Austria
* Tim Hallwyl, Visma Sirius, Denmark
* Koji Hasebe, University of Tsukuba, Japan
* Peep Küngas, University of Tartu, Estonia
* Ivan Lanese, University of Bologna/INRIA, Italy
* Marcello La Rosa, Queensland University of Technology, Australia
* Michele Mazzucco, University of Tartu, Estonia
* Hernán Melgratti, University of Buenos Aires, Argentina
* Paolo Missier, Newcastle University, UK
* Christian W. Probst, Denmark Technical University (DTU), Denmark
* Ayda Saidane, University of Luxembourg, Luxembourg
* Mirko Viroli, University of Bologna, Italy
* Prakash Yamuna, Oracle, USA

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