Lorenz Froihofer studierte Informatik und Informatikmanagement an der Technischen Universität Wien und promovierte 2007 mit Auszeichnung. Während seines Studiums und im Zuge seiner Forschungs- und Lehrtätigkeit spezialisierte er sich auf dem Gebiet des Software Engineerings von zuverlässigen Verteilten Systemen im Rahmen des EU Forschungsprojektes DeDiSys (Dependable Distributed Systems) im Arbeitsbereich Verteilte Systeme. Zuvor war er war als Forschungsassistent im MediaTeam Oulu (Universität von Oulu, Finnland) tätig und arbeitete während seiner Diplomarbeit über Sicherheit in WLAN Netzwerken in enger Zusammenarbeit mit SIEMENS Österreich. Derzeit arbeitet er mit seiner Expertise in Bezug auf Software Engineering, Sicherheit und Zuverlässigkeit im österreichischen FIT-IT Projekt TRADE (Trustworthy Adaptive Quality Balancing through Temporal Decoupling).

• Verteilte Systeme
• Software- und Systemarchitekturen
• Software Engineering
• Zuverlässigkeit (Dependability) und Sicherheit (Security)

TRADE (Trustworthy Adaptive Quality Balancing through Temporal Decoupling)
– „Vertrauenswürdige adaptive Balancierung der (Service-)Qualität durch zeitliche Entkoppelung“

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Konferenzbeiträge und Buchkapitel

• Stefan Beyer, Juan Carlos Garcia Ortiz,  Pablo Galdámez, Francesc Muñoz-Escoi, Lorenz Froihofer, Karl M. Goeschka, and Johannes Osrael,
  "Reliable Software for Partitionable Networked Environments - An Experience Report,"
  in Proc. of ESREL 2008 AND 17th SRA-EUROPE CONFERENCE - Annual Risk, Safety and Reliability Conference, 2008.
  
• Lorenz Froihofer, Karl M. Goeschka, and Johannes Osrael
  "Middleware Support for Adaptive Dependability,"
  in Proc. of Middleware 2007, Springer LNCS, 2007.
  doi:10.1007/978-3-540-76778-7_16
  
• Lorenz Froihofer, Gerhard Glos, Johannes Osrael, and Karl M. Goeschka,
  "Overview and Evaluation of Constraint Validation Approaches in Java,"
  in Proc. 29th Int. Conf. on Software Engineering (ICSE'07), IEEE CS, 2007.
  doi:10.1109/ICSE.2007.60
• Lorenz Froihofer, Johannes Osrael, and Karl M. Goeschka,
  "Decoupling Constraint Validation from Business Activities to Improve Dependability in Distributed Object Systems,"
  in Proc. 2nd Int. Conf. on Availability, Reliability, and Security (ARES'07) IEEE CS, 2007.
  doi:10.1109/ARES.2007.64
  
• Johannes Osrael, Lorenz Froihofer, Norbert Chlaupek, and Karl M. Goeschka,
  "Availability and Performance of the Adaptive Voting Replication Protocol,"
  in Proc. 2nd Int. Conf. on Availability, Reliability, and Security (ARES'07), IEEE CS, 2007.
  doi:10.1109/ARES.2007.50
  
• Johannes Osrael, Lorenz Froihofer, Martin Weghofer, and Karl M. Goeschka,
  "Axis2-based replication middleware for Web services,"
  in Proc. of the Int. Conf. on Web Services. IEEE CS, 2007.
  doi:10.1109/ICWS.2007.57
• Johannes Osrael, Lorenz Froihofer, and Karl M. Goeschka,
  chapter "Replication in Service-Oriented Systems,"
  in Software Engineering of Fault Tolerant Systems, World Scientific Publishing, 2007.
• Johannes Osrael, Lorenz Froihofer, and Karl M. Goeschka,
  "A Replication Model for Trading Data Integrity against Availability,"
  in Proc. 12th Int. Symp. on Pacific Rim Dependable Computing (PRDC'06), IEEE CS, 2006.
  doi:10.1109/PRDC.2006.12
• Lorenz Froihofer, Johannes Osrael, and Karl M. Goeschka,
  "Trading Integrity for Availability by Means of Explicit Runtime Constraints,"
  in Proc. 30th Int. Conf. on Computer Software and Applications (COMPSAC'06), IEEE CS, 2006.
  doi:10.1109/COMPSAC.2006.172
• Johannes Osrael, Lorenz Froihofer, Karl M. Goeschka, Stefan Beyer, Pablo Galdámez, and Francesc Muñoz-Escoi,
  "A System Architecture for Enhanced Availability of Tightly Coupled Distributed Systems,"
  in Proc. 1st Int. Conf. on Availability, Reliability, and Security (ARES'06), IEEE CS, 2006.
  doi:10.1109/ARES.2006.19
• Johannes Osrael, Lorenz Froihofer, Hubert Kuenig, and Karl M. Goeschka,
  "Scenarios for Increasing Availability by Relaxing Data Intgrity,"
  in Innovation and the Knowledge Economy: Issues, Applications, Case Studies, IOS Press, 2005.

Workshop Paper

• Karl M. Goeschka, Lorenz Froihofer, and Schahram Dustdar,
  "What SOA can do for Software Dependability,"
  in Supplementary Volume of the 38th Int. Conference on Dependable Systems and Networks (DSN'08), 2008.
• Karl M. Goeschka and Lorenz Froihofer,
  "Closing the Dependability Gap: Converging Software Engineering with Middleware,"
  in Supplementary volume of the 38th Int. Conference on Dependable Systems and Networks (DSN'08), 2008.
• Lorenz Froihofer and Karl M. Goeschka,
  "Balancing of Dependability and Security in Online Auctions,"
  in Supplementary volume of the 38th Int. Conference on Dependable Systems and Networks (DSN'08), 2008.
• Lorenz Froihofer, Markus Baumgartner, Johannes Osrael, and Karl M. Goeschka,
  "Data Partitioning through Integrity Constraints,"
  in Supplementary volume of the 37th Int. Conference on Dependable Systems and Networks (DSN'07), 2007.
• Johannes Osrael, Lorenz Froihofer, and Karl M. Goeschka,
  "On the Need for Dependability Research on Service Oriented Systems,"
  in Supplementary volume of the 37th Int. Conference on Dependable Systems and Networks (DSN'07), IEEE CS, 2007.
• Johannes Osrael, Lorenz Froihofer, and Karl M. Goeschka,
  "Availability/Consistency Balancing Replication Model,"
  in Workshop Proc. of the 21st Int. Parallel and Distributed Processing Symp. (IPDPS), IEEE, 2007.
  doi:10.1109/IPDPS.2007.370610
• Johannes Osrael, Lorenz Froihofer, and Karl M. Goeschka.
  "Experiences from building service and object replication middleware,"
  in Workshop Proc. of the 6th Int. Symp. on Network Computing and Applications, IEEE CS, 2007.
  doi:10.1109/NCA.2007.21
• Lorenz Froihofer, Johannes Osrael, and Karl M. Goeschka,
  "Middleware/Application Interactions to Support Adaptive Dependability,"
  in Proc. of the 1st Workshop on Middleware/Application Interaction in conjunction with the EuroSys conference, ACM Press, 2007.
  doi:10.1145/1238828.1238837
• Johannes Osrael, Lorenz Froihofer, and Karl M. Goeschka,
  "What Service Replication Middleware Can Learn from Object Replication Middleware,"
  in Proc. 1st Workshop on Middleware for Service Oriented Systems
  at the ACM/IFIP/USENIX 7th Int. Middleware Conference 2006, ACM Press, 2006.
  doi:10.1145/1169091.1169094
• Johannes Osrael, Lorenz Froihofer, Matthias Gladt, and Karl M. Goeschka,
  "Adaptive Voting for Balancing Data Integrity with Availability,"
  in On the Move to Meaningful Internet Systems 2006: OTM Workshops Proc., LNCS, Springer, 2006.
  doi:10.1007/11915072_56
• Johannes Osrael, Lorenz Froihofer, Georg Stoifl, Lucas Weigl, Klemen Zagar, Igor Habjan, and Karl M. Goeschka,
  "Using Replication to Build Highly Available .NET Applications,"
  in Proc. 17th Int. Workshop on Database and Expert Systems Applications (DEXA'06), IEEE CS, 2006.
  doi:10.1109/DEXA.2006.146

Akademische Abschlussarbeiten

• Lorenz Froihofer,
  "Middleware Support for Adaptive Dependability through Explicit Runtime Integrity Constraints,"
  PhD Thesis, Vienna University of Technology, Distributed Systems Group, 2007.
  
• Lorenz Froihofer,
  "A Survey of WLAN Security with Focus on HotSpot and Enterprise Environments,"
  Master's Thesis, Vienna University of Technology, Distributed Systems Group, 2004.

Mitorganisation von Konferenzen und Workshops

• Organizational Chair, Dependable and Adaptive Distributed Systems Track (DADS) at the 24th ACM Symposium on Applied Computing (SAC'09), Honolulu, Hawaii, USA, March 8 - 12, 2009, ACM.
• Organizational Chair, 3rd Workshop on Middleware for Service-Oriented Computing (MW4SOC) at the ACM/IFIP/USENIX 9th Int. Middleware Conference, Leuven, Belgium, December 01, 2008, ACM.

Reviewer von Journalen und Büchern

• Journal of Systems and Software, 2008
• LNCS Hot Topics on Software Engineering for Self-Adaptive Systems, 2008
• IBM Systems Journal, 2008
• ITEM 2006: Information Technology and Management, Special Issue on Architecture & Design for Application Agility, 2006, Springer.

Mitgliedschaft in Programmkommitees und Reviews für Konferenzen

• DEPEND 2009: The Second International Conference on Dependability, Athens, Greece, June 14-19, 2009, IEEE CS.
• FASE'09: Fundamental Approaches to Software Engineering, York, UK, March 22–29, 2009, Springer.
• ASBS'08: The First IEEE International Workshop on Autonomous and Autonomic Software-Based Systems, Cergy Pontoise, Paris, France,  October 26–30, 2008, IEEE CS.
• DADS'08: Dependable and Adaptive Distributed Systems Track (DADS) at the 23^rd ACM Symposium on Applied Computing (SAC 2008), Ceara, Brazil, March 16–20, 2008, ACM.
• MW4SOC'07: 2^nd Workshop on Middleware for Service Oriented Computing at the ACM/IFIP/USENIX 8^th International Middleware Conference 2007 (MW 2007), Newport Beach, California, USA, Nov 26, 2007, ACM.
• FASE'07: Fundamental Approaches to Software Engineering, Braga (Portugal), 24 March – 1 April, 2007, Springer.
• ARES'06:1^st International Conference on Availability, Reliability, and Security, Vienna, Austria, April 20–22, 2006, IEEE CS.
• NWeSP'06: International Conference on Next Generation Web Services Practices, September 25–28, 2006, IEEE CS.

• 2005: Diplomarbeitspreis der Stadt Wien für exzellente Diplomarbeit

Die Organisationen der Studierenden sind wie folgt:

• TUV: Technische Universität Wien
  
• UAS-CV: FH Campus Wien
• UAS-JO: FH Joanneum
• UAS-TV: FH Technikum Wien

Derzeitige Diplomanden

• Andreas Redlein, TUV
  
• Alexander Hörmandinger, TUV
  
• Xuejun Ji, TUV
• Markus Friedl, UAS-CV
• Emir Cajlakovic, UAS-CV
  
• Markus Kolb, UAS-CV
• Georg Veit, UAS-CV
  
• Thomas Kreitner, UAS-CV
  
• Dominik Ramberger, UAS-CV
• Peter Sabaini, UAS-JO

Kürzlich abgeschlossene Diplomarbeiten

• Sunil Pilani, TUV, 2008: Smart Card-based Online-Auctioning
  
• Gerhard Wagner, TUV, 2008: Evaluation of Smart Card Access for Web Applications
• Birgit Wess, UAS-CV, 2008: Balancierung von Datenintegrität mit Verfügbarkeit in einer Web Service Umgebung
  
• Michael Nedoma, UAS-CV, 2008: Experimentelle Analyse von PostgreSQL Datenbank-Replikationsframeworks
• Dominik Ertl, TUV, 2007: Evaluation of Partitionable Replication Protocol Improvements in an Enterprise JavaBeans Environment
• Ronald Klaudus, UAS-CV, 2007: Evaluierung von Web Service Message Replikation vs. Datenbankreplikation mit Microsoft Technologien
• Markus Baumgartner, UAS-TV, 2007: Adaptive Constraint-Validierung in einer verteilten Enterprise JavaBeans Umgebung
• Bernhard Rieder, UAS-TV, 2007: Balancierung von Integrität und Verfügbarkeit in verteilten Web-basierten Enterprise JavaBeans Anwendungen
• Norbert Chlaupek, UAS-CV, 2007: Implementation and Evaluation of the Adaptive Voting Replication Protocol in a .NET Environment
• Martin Schenkir, UAS-CV, 2007: Service Replication in Mobile Environments
• Gerhard Glos, TUV, 2007: Performance and Usability Evaluation of Constraint Checking Approaches in Java
• Markus Horehled, UAS-TV, 2006: Integration of an EJB Constraint Consistency Management Framework into the JBoss Application Server
• Klaus Fuchshofer, UAS-TV, 2006: Negotiation and Reconciliation of Consistency Threats for Enterprise JavaBeans Applications – Adapting the dependability of distributed systems
• Jörg Artaker, UAS-CV, 2006: Integration of a Constraint Checking Framework into the JBoss Application Server – With special Regard to the Trade-off between Availability and Consistency
• Martin Hinterndorfer, UAS-CV, 2006: Middleware supported Negotiation and Reconciliation of Consistency Threats Based on Constraint Checking Framework in JBoss Application Server