My PhD thesis:

Christian Kraetzer: Statistical Pattern Recognition for Audio Forensics - Empirical Investigations on the Application Scenarios Audio Steganalysis and Microphone Forensics. PhD Thesis. Faculty of Computer Science, Otto-von-Guericke-University Magdeburg, Germany, Mai, 2013.

Books and Bookchapters:

• Bookchapter Jana Dittmann, Christian Kraetzer: Privacy concepts in biometrics: lessons learned from forensics. In Claus Vielhauer (Ed.): User-Centric Privacy and Security in Biometrics. Institution of Engineering and Technology (IET), ISBN: 978-1-78561-207-7, Book DOI: 10.1049/PBSE004E, 2017.
• Book Christian Kraetzer, Yun-Qing Shi, Jana Dittmann and Hyoung Joong Kim (Eds.): Proceedings of the 16th International Workshop on Digital Forensics and Watermarking (IWDW 2017), Magdeburg, Germany, August 23-25, 2017, Springer International Publishing, LNCS 10431, ISBN: 978-3-319-64184-3, DOI: 10.1007/978-3-319-64185-0, 2017.
• Bookchapter Christian Kraetzer and Jana Dittmann: Microphone Forensics. In Handbook of Digital Forensics of Multimedia Data and Devices. Anthony T. S. Ho, Shujun Li (Eds.). Wiley-IEEE Press (John Wiley & Sons, Chichester, United Kingdom), ISBN 978-1-118-64050-0, September 2015.
• Book Bart De Decker, Jana Dittmann, Christian Kraetzer, Claus Vielhauer (Eds.): Proc. 14th IFIP TC 6/TC 11 international conference Communications and Multimedia Security (CMS 2013). Magdeburg, Germany, September 25-26, Lecture Notes in Computer Science (LNCS), Vol. 8099, Springer Berlin Heidelberg, ISBN: 978-3-642-40778-9 (Print), DOI 10.1007/978-3-642-40779-6, 2013.

Journal-, Conference- and Workshoppapers (sorted by year):

2023

• M. Tahraoui, C. Krätzer, J. Dittmann, H. Aden: Defending Informational Sovereignty by Detecting Deepfakes? Opportunities and Risks of an AI-Based Detector for Deepfakes-Based Disinformation and Illegal Activities. Weizenbaum Journal of the Digital Society, 3(2), (2023). URL: https://doi.org/10.34669/WI.WJDS/3.2.3
• Bernhard Birnbaum, Christian Krätzer, Jana Dittmann: Stego-Malware Attribution: Simple Signature and Content-based Features Derived and Validated from Classical Image Steganalysis on Five Exemplary Chosen Algorithms. Proc. 17. International Conference on Emerging Security Information, Systems and Technologies (SECURWARE 2023), September 25, 2023 to September 29, 2023 - Porto, Portugal, 2023. URL: https://www.thinkmind.org/index.php?view=article&articleid=securware_2023_1_70_30047
• Dennis Siegel, Christian Kraetzer, Jana Dittmann: Joining of Data-driven Forensics and Multimedia Forensics for Deepfake Detection on the Example of Image and Video Data. Proc. 17. International Conference on Emerging Security Information, Systems and Technologies (SECURWARE 2023), September 25, 2023 to September 29, 2023 - Porto, Portugal, 2023. URL: https://www.thinkmind.org/index.php?view=article&articleid=securware_2023_1_80_30054
• Dennis Siegel, Stefan Seidlitz, Christian Krätzer, Jana Dittmann: Pros and cons of comparing and combining hand-crafted and neural network based DeepFake detection based on eye blinking behavior. Proc. Electronic Imaging. Springfield, VA : Society for Imaging Sciences and Technology, Bd. 35 (2023), S. 378-1-378-6, 2023.
• Christian Krätzer, Dennis Siegel, Stefan Seidlitz, Jana Dittmann: Human-in-control and quality assurance aspects for a benchmarking framework for DeepFake detection models. Proc. Electronic Imaging. Springfield, VA : Society for Imaging Sciences and Technology, Bd. 35 (2023), S. 379-1-379-6, 2023.

2022

• Milan Tahraoui, Christian Krätzer, Jana Dittmann: Defending Informational Sovereignty by Detecting Deepfakes: Risks and Opportunities of an AI-Based Detector for Deepfake-Based Disinformation and Illegal Activities. Eds.: Bianca Herlo, Daniel Irrgang. Proceedings of the 4th Weizenbaum Conference 2022: Practicing Sovereignty - Interventions for Open Digital Futures. Berlin.  ISSN 2510-7666, pp. 142-161, 2022.
• Dennis Siegel, Christian Krätzer, Stefan Seidlitz, Jana Dittmann: Forensic data model for artificial intelligence based media forensics - Illustrated on the example of DeepFake detection. Proc. Electronic Imaging, Springfield, VA: Society for Imaging Sciences and Technology, Bd. 34 (2022), 4, 2022.
• Christian Krätzer, Dennis Siegel, Stefan Seidlitz, Jana Dittmann: Process-driven modelling of media forensic investigations-considerations on the example of DeepFake detection. J. Sensors - Basel: MDPI, Bd. 22 (2022), 9, 2022.
• Kevin Lamshöft: Jonas Hielscher, Christian Krätzer, Jana Dittmann: The threat of covert channels in network time synchronisation protocols. Journal of cyber security and mobility, Gistrup: River Publishers, Bd. 11 (2022), 2, pp. 165-204, 2022.
• Anna Louban, Milan Tahraoui, Hartmut Aden, Jan Fährmann, Christian Krätzer, Jana Dittmann: Das Phänomen Deepfakes - Künstliche Intelligenz als Element politischer Einflussnahme und Perspektive einer Echtheitsprüfung. In Künstliche Intelligenz, Demokratie und Privatheit/ Auswirkungen der Künstlichen Intelligenz auf Demokratie und Privatheit - Baden-Baden: Nomos Verlagsgesellschaft; Friedewald, Michael *1965-* . - 2022, S. 265-288, 2022.

2021

• Tom Neubert, Claus Vielhauer, Christian Kraetzer: Artificial Steganographic Network Data Generation Concept and Evaluation of Detection Approaches to secure Industrial Control Systems against Steganographic Attacks. In Proceedings of the 16th International Conference on Availability, Reliability and Security (ARES 21). Association for Computing Machinery, New York, NY, USA, Article 70, 1–9, 2021. https://doi.org/10.1145/3465481.3470073
• Christian Kraetzer, Andrey Makrushin, Jana Dittmann, Mario Hildebrandt: Potential advantages and limitations of using information fusion in media forensics - A discussion on the example of detecting face morphing attacks. EURASIP Journal on Information Security, 2021, Bd. 2021, Heft 1, Springer, 2021.
• S. Ezennaya-Gomez, S. Kiltz, C. Kraetzer und J. Dittmann: A Semi-Automated HTTP Traffic Analysis for Online Payments for Empowering Security, Forensics and Privacy Analysis. In: The 16th International Conference on Availability, Reliability and Security, ARES 2021, New York, NY, USA, 2021. Association for Computing Machinery.
• J. Hielscher, K. Lamshöft, C. Krätzer und J. Dittmann: A Systematic Analysis of Covert Channels in the Network Time Protocol. In: The 16th International Conference on Availability, Reliability and Security, ARES 2021, New York, NY, USA, 2021. Association for Computing Machinery.
• M. Hildebrandt, A. Shakir, A. Ziemke, M. Abdelrazek, H. Stuetzer, D. Blut, K. Lamshoeft, S. Ezennaya-Gomez, C. Kraetzer und J. Dittmann: AiroIdent User identification based on analyzing WPA2 encrypted traffic containing search engine interactions. Electronic Imaging, 2021(4):344–1–344–8, 2021.
• K. Lamshöft, T. Neubert, C. Kraetzer, C. Vielhauer und J. Dittmann: Information Hiding in Cyber Physical Systems: Challenges for Embedding, Retrieval and Detection Using Sensor Data of the SWAT Dataset. In: Proceedings of the 2021 ACM Workshop on Information Hiding and Multimedia Security, IHMMSec ’21, S. 113–124, New York, NY, USA, 2021. Association for Computing Machinery.
• A. Makrushin, C. Kauba, S. Kirchgasser, S. Seidlitz, C. Kraetzer, A. Uhl und J. Dittmann. General Requirements on Synthetic Fingerprint Images for Biometric Authentication and Forensic Investigations. In: Proceedings of the 2021 ACM Workshop on Information Hiding and Multimedia Security, IHMMSec ’21, S. 93–104, New York, NY, USA, 2021. Association for Computing Machinery.
• S. Seidlitz, K. Jürgens., A. Makrushin, C. Kraetzer und J. Dittmann: Generation of Privacy-friendly Datasets of Latent Fingerprint Images using Generative Adversarial Networks. In: Proceedings of the 16th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications - Volume 4: VISAPP,, S. 345–352. INSTICC, SciTePress, 2021.
• D. Siegel, C. Kraetzer, S. Seidlitz und J. Dittmann. Media Forensics Considerations on DeepFake Detection with Hand-Crafted Features. Journal of Imaging, 7(7), 2021.
• S. Wendzel, L. Caviglione, W. Mazurczyk, A. Mileva, J. Dittmann, C. Kraetzer, K. Lamshöft, C. Vielhauer, L. Hartmann, J. Keller und T. Neubert: A Revised Taxonomy of Steganography Embedding Patterns. In: The 16th International Conference on Availability, Reliability and Security, ARES 2021, New York, NY, USA, 2021. Association for Computing Machinery.

2020

• R. Altschaffel, J. Hielscher, C. Kraetzer, K. Lamshöft und J. Dittmann: Forensic behavior analysis in video conferencing based on the metadata of encrypted audio and video streams - considerations and possibilities. 2020. SECURWARE 2020: the Fourteenth International Conference on Emerging Security Information, Systems and Technologies : November 21-25, 2020/ International Conference on Emerging Security Information, Systems and Technologies, Hof, Hans-Joachim *1975-* - [Wilmington, DE, USA]: IARIA . - 2020, S. 82-89.

2019

• A. Makrushin, C. Kraetzer, J. Dittmann, C. Seibold, A. Hilsmann und P. Eisert: Dempster-shafer Theory for Fusing Face Morphing Detectors. 2019. 2018 27th European Signal Processing Conference (EUSIPCO) - [Piscataway, NJ]: IEEE, S. 1-5, 2019; unter URL: http://dx.doi.org/10.23919/EUSIPCO.2019.8902533 ; [Konferenz: 27th European Signal Processing Conference, EUSIPCO 2019, A Coruna, Spain, 2-6 Sept. 2019].
• A. Makrushin, C. Kraetzer, G. Mittag, H. Birkholz, U. Rabeler, A. Wolf, C. Seibold, A. Hilsmann, P. Eisert, L. Wandzik, R. Vicente Garcia und J. Dittmann: Distributed and GDPR/IPR Compliant Benchmarking of Facial Morphing Attack Detection Services. 2019. Proceedings of the International Conference on Biometrics for Borders 2019: Morphing and Morphing Attack Detection Methods, 2019, Warsaw, Poland, 2019.
• T. Neubert, C. Kraetzer und J. Dittmann: A Face Morphing Detection Concept with a Frequency and a Spatial Domain Feature Space for Images on eMRTD. 2019. Proceedings of the ACM Workshop on Information Hiding and Multimedia Security - New York, NY: The Association for Computing Machinery, S. 95-100, 2019; unter URL: http://dx.doi.org/10.1145/3335203.3335721 ; [Workshop: ACM Workshop on Information Hiding and Multimedia Security, IH&MMSec’19, Paris, France, July 03 - 05, 2019]: 2019.

2018

• Andrey Makrushin, Christian Kraetzer, Tom Neubert, Jana Dittmann: Generalized Benford's Law for Blind Detection of Morphed Face Images. In Proceedings of the 6th ACM Workshop on Information Hiding and Multimedia Security (IH&MMSec '18). ACM, New York, NY, USA, 49-54. DOI: https://doi.org/10.1145/3206004.3206018, 2018.
• Tom Neubert, Christian Kraetzer, Jana Dittmann: Reducing the false alarm rate for face morph detection by a morph pipeline footprint detector. In Proc. 26th European Signal Processing Conference (EUSIPCO 2018), Rome, Italy, September 3-7, 2018 - Rome, 2018.
• Christian Kraetzer, Jana Dittmann: Steganography by synthesis: Can commonplace image manipulations like face morphing create plausible steganographic channels? In Proc. ARES 2018, 2018.
• Tom Neubert, Andrey Makrushin, Mario Hildebrandt, Christian Kraetzer, and Jana Dittmann: Extended StirTrace Benchmarking of Biometric and Forensic Qualities of Morphed Face Images. Journal IET Biometrics. 10.1049/iet-bmt.2017.0147., 2018.

2017

• Christian Kraetzer, Andrey Makrushin, Tom Neubert, Mario Hildebrandt, Jana Dittmann: Modeling Attacks on Photo-ID Documents and Applying Media Forensics for the Detection of Facial Morphing. In Proceedings of the 5th ACM Workshop on Information Hiding and Multimedia Security (IH&MMSec '17). ACM, New York, NY, USA, 21-32. DOI: https://doi.org/10.1145/3082031.3083244, 2017.

2016

• Christian Kraetzer, Robert Altschaffel, Jana Dittmann: Tendenzen zum Profiling von verschlüsselten Netzwerkverkehren - Möglichkeiten und Grenzen. In: 6th International Symposium "New Technologies": Stuttgart, Germany, 05./06.10.2016. - Herrausgeber: Bundeskriminalamt, Wiesbaden, 2016.
• Ronny Merkel, Christian Kraetzer, Mario Hildebrandt, Stefan Kiltz, Sven Kuhlmann and Jana Dittmann: A Semantic Framework for a better Understanding, Investigation and Prevention of Organized Financial Crime Accepted for GI Sicherheit 2016.

2015

• Veit Köppen, Christian Krätzer, Jana Dittmann, Gunter Saake, and Claus Vielhauer: Impacts on Database Performance in a Privacy-Preserving Biometric Authentication Scenario. In International Journal on Advances in Security, 8(1+2), IARIA, pages 99-108, 2015. 2015.
• Christian Kraetzer and Jana Dittmann: Considerations on the Benchmarking of Media Forensics. In: Proc. 23rd European Signal Processing Conf. (EUSIPCO), Nice, France, IEEE, ISBN: 978-0-9928626-3-3, 2015.
• Maik Schott, Claus Vielhauer, Christian Krätzer: Using Different Encryption Schemes for Secure Deletion While Supporting Queries. In Datenbanksysteme für Business, Technologie und Web (BTW 2015) - Workshopband. Second Workshop on Databases in Biometrics, Forensics and Security Applications (DBforBFS), March 2nd, 2015 - Hamburg, Germany, Lecture Notes in Informatics (LNI) - Proceedings Series of the Gesellschaft für Informatik (GI), Volume P-242, ISBN 978-3-88579-636-7, ISSN 1617-5468, pages 37-46, 2015.

2014

• Jana Dittmann, Veit Köppen, Christian Krätzer, Martin Leuckert, Gunter Saake, Claus Vielhauer: Performance Impacts in Database Privacy-Preserving Biometric Authentication. In Proc. The Eighth International Conference on Emerging Security Information, Systems and Technologies (SECURWARE 2014). November 16 - 20, 2014 - Lisbon, Portugal, 2014.
• Christian Krätzer, Mario Hildebrandt, Andreas Dobbert, Jana Dittmann: Digitalisierte Forensik: Sensorbildfusion und Benchmarking. Proc. D-A-CH Security 2014. Graz, Austria, 16.-17. September 2014.
• Robert Altschaffel, Christian Kraetzer, Jana Dittmann, Stefan Kiltz: A hierarchical model for the description of internet-based communication. In: Proc. of 8th International Conference on IT Security Incident Management and IT Forensics, IMF 2014., IEEE, Piscataway, NJ, IEEE, pp. 85-94, Conference: Müster, Germany, 2014.05.12-14, 2014.

2013

• Andreas Hasselberg, Rene Zimmermann, Christian Kraetzer, Tobias Scheidat, Claus Vielhauer, Karl Kümmel: Security of Features Describing the Visual Appearance of Handwriting Samples Using the Bio-hash Algorithm of Vielhauer against an Evolutionary Algorithm Attack. In Bart De Decker, Jana Dittmann, Christian Kraetzer, Claus Vielhauer (Eds.): Proc. 14th IFIP TC 6/TC 11 international conference Communications and Multimedia Security, CMS 2013, Magdeburg, Germany, September 25-26, Lecture Notes in Computer Science (LNCS), Vol. 8099, Springer Berlin Heidelberg, ISBN: 978-3-642-40778-9 (Print), DOI 10.1007/978-3-642-40779-6, pp. 85-94, 2013.
• Robert Altschaffel, Robert Clausing, Christian Kraetzer, Tobias Hoppe, Stefan Kiltz and Jana Dittmann: Statistical Pattern Recognition Based Content Analysis on Encrypted Network Traffic for the TeamViewer Application. In: Proc. of the 7th International Conference on IT Security Incident Management & IT Forensics (IMF 2013), March 12th - 14th, Nuremberg, Germany, 2013. 

2012

• Eric Clausing, Christian Kraetzer, Jana Dittmann, Claus Vielhauer: A first approach for digital representation and automated classification of toolmarks on locking cylinders using confocal laser microscopy. Proc. Security + Defence conference ptics and Photonics for Counterterrorism, Crime Fighting, and Defence VIII, SPIE 8546, Edinburgh, United Kingdom, September 24-27, doi:10.1117/12.971454, 2012.
• Eric Clausing, Christian Kraetzer, Jana Dittmann and Claus Vielhauer: A First Approach for the Contactless Acquisition and Automated Detection of Toolmarks on Pins of Locking Cylinders Using 3D Confocal Microscopy. Proc. 14th ACM Workshop on Multimedia and Security, 6 - 7 September, Warwick, UK, 2012.
• Christian Arndt, Christian Kraetzer and Claus Vielhauer: First approach for a computer-aided textile fiber type determination based on template matching using a 3D laser scanning microscope. Proc. 14th ACM Workshop on Multimedia and Security, 6 - 7 September, Warwick, UK, 2012.
• Wiebke Menzel, Sven Tuchscheerer, Jana Fruth, Christian Krätzer and Jana Dittmann: Designansatz und Evaluation von kindgerechten Securitywarnungen für Smartphones. Proc. Sicherheit 2012: Sicherheit, Schutz und Zuverlässigkeit, Beiträge der 6. Jahrestagung des Fachbereichs Sicherheit der Gesellschaft für Informatik e.V. (GI). Neeraj Suri, Michael Waidner (eds.), Gesellschaft für Informatik e.V. (GI), Darmstadt, 7.-9. März 2012, LNI 195 GI 2012, Köllen Druck+Verlag GmbH, Bonn, pp. 211-223, 2012.
• Wiebke Menzel, Sven Tuchscheerer, Jana Fruth, Christian Kraetzer and Jana Dittmann: Design and evaluation of security multimedia warnings for children's smartphones. In Reiner Creutzburg, David Akopian, Cees G. M. Snoek, Nicu Sebe, Lyndon Kennedy  (Eds.): Multimedia on Mobile Devices 2012, Proc. SPIE 8304, 83040B, http://dx.doi.org/10.1117/12.908026, 2012.
• Christian Kraetzer, Kun Qian and Jana Dittmann: Extending a Context Model for Microphone Forensics. In Proc. Media Watermarking, Security, and Forensics XIV, IS&T / SPIE Electronic Imaging Conference, 2012.
• Christian Kraetzer and Jana Dittmann: Plausibility Considerations on Steganalysis as a Security Mechanism – Discussions on the Example of Audio Steganalysis. Yun Shi, Stefan Katzenbeisser (Eds.), Transactions on Data Hiding and Multimedia Security VIII, Lecture Notes in Computer Science, Vol. 7228, Springer Berlin / Heidelberg, ISBN: 978-3-642-31970-9, pp. 80-101, 2012. link

2011

• Sven Tuchscheerer, Christian Kraetzer, Jana Dittmann, Tobias Hoppe: Statistical effects of selected noise characteristics on speaker recognition in automotive environments - a first anova-based investigation. In Proceedings of the 3rd International Conference on Automotive User Interfaces and Interactive Vehicular Applications, Salzburg, Austria, Nov. 30th - Dec. 2nd 2011, Univ. Salzburg, pp. 63-67, 2011.
• Ronny Merkel, Christian Kraetzer, Robert Altschaffel, Eric Clausing, Maik Schott and Jana Dittmann. Fingerprint Forensics Application Protocol: Semi-Automated Modeling and Verification of Watermark-Based Communication Using CASPER and FDR.  Proc. 10th International Workshop on Digital-forensics and Watermarking (IWDW11), Atlantic City, New Jersey, USA, 23-26 October 2011.
• Kun Qian, Maik Schott, Christian Kraetzer, Matthias Hemmje, Jana Dittmann: A Security Contextualisation Framework for Digital Long-Term Preservation. Proc. International Workshop on Semantic Digital Archives, (part of the 15th International Conference on Theory and Practice of Digital Libraries (TPDL)), Berlin, Germany, Sep. 29th, 2011.
• Ronny Merkel, Anja Bräutigam, Christian Kraetzer, Jana Dittmann, Claus Vielhauer: Evaluation of binary pixel aging curves of latent fingerprint traces for different surfaces using a chromatic white light (CWL) sensor. Proceedings of the Thirteenth ACM Multimedia Workshop on Multimedia and Security. pp. 41-50, DOI: 10.1145/2037252.2037262, Niagara Falls, NY, USA, Sept. 29-30, Publisher: ACM, New York, NY, USA, 2011.
• Christian Kraetzer, Ronny Merkel, Robert Altschaffel, Eric Clausing, Jana Dittmann: Semi-automated communication protocol security verification for watermarking - pros and cons illustrated on a complex application scenario. Proceedings of the Thirteenth ACM Multimedia Workshop on Multimedia and Security. pp. 93-102, DOI: 10.1145/2037252.2037270, Niagara Falls, NY, USA, Sept. 29-30, Publisher: ACM, New York, NY, USA, 2011.
• Kun Qian, Maik Schott, Christian Kraetzer, Matthias Hemmje: Contextualizing security for digital long-term preservation. Proceedings of the Thirteenth ACM Multimedia Workshop on Multimedia and Security. pp. 115-120, DOI: 10.1145/2037252.2037274, Niagara Falls, NY, USA, Sept. 29-30, Publisher: ACM, New York, NY, USA, 2011.
• Ronny Merkel, Christian Kraetzer, Jana Dittmann, Claus Vielhauer: Reversible Watermarking with Digital Signature Chaining for Privacy Protection of Optical Contactless Captured Biometric Fingerprints - A Capacity Study for ac Approaches. Proc. 17th International Conference on Digital Signal Processing (DSP'11). 6-8 July 2011, Corfu, Greece, 2011.
• Sven Tuchscheerer, Tobias Hoppe, Christian Kraetzer, Jana Dittmann: FirstAidAssistanceSystem: improvement of first aid measures by using Car2Car-communication. Proc. Intelligent Robots and Computer Vision XXVIII: Algorithms and Techniques, Electronic Imaging Conference 7878, IS&T/SPIE 23rd Annual Symposium, San Francisco, CA, USA, January 23rd - 27th, 2011.
• Jana Fruth, Christian Kraetzer, Jana Dittmann: Design and evaluation of security multimedia warnings for interaction between human and industrial robots. Proc. Intelligent Robots and Computer Vision XXVIII: Algorithms and Techniques, Electronic Imaging Conference 7878, IS&T/SPIE 23rd Annual Symposium, San Francisco, CA, USA, January 23rd - 27th, 2011.
• Tobias Scheidat, Juliane Heinze, Claus Vielhauer, Jana Dittman, Christian Kraetzer: Comparative review of studies on aging effects in context of biometric authentication. Proc. Multimedia on Mobile Devices 2011, Electronic Imaging Conference 7881A, IS&T/SPIE 23rd Annual Symposium, San Francisco, CA, USA, January 23rd - 27th, 2011.
• Stefan Kiltz, Mario Hildebrandt, Jana Dittmann, Claus Vielhauer, Christian Kraetzer: Printed fingerprints: a first proposal for a framework for subjective assessment of appropriateness of selected printing technologies in forensics. Proc. Image Quality and System Performance VIII, Electronic Imaging Conference 7867, IS&T/SPIE 23rd Annual Symposium, San Francisco, CA, USA, January 23rd - 27th, 2011.
• Marcus Leich, Stefan Kiltz, Christian Kraetzer Jana Dittmann, Claus Vielhauer: Preliminary study of statistical pattern recognition-based coin counterfeit detection by means of high resolution 3D-Scanners. Proc. 3D Image Processing (3DIP) and Applications II, Electronic Imaging Conference 7864B, IS&T/SPIE 23rd Annual Symposium, San Francisco, CA, USA, January 23rd - 27th, 2011.
• Christian Kraetzer, Kun Qian, Maik Schott and Jana Dittmann: A Context Model for Microphone Forensics and its Application in Evaluations. Proc. of Media Watermarking, Security, and Forensics XIII, Nasir D. Memon, Jana Dittmann, Adnan M. Alattar, Edward J. Delp (eds.), IS&T / SPIE Electronic Imaging Conference 7880, San Francisco, CA, USA, 24 - 26 January 2011. - Additional material.

2010

• Ronny Merkel, Christian Kraetzer, Tobias Hoppe, Jana Dittmann: Ergänzung zu Signaturen: Statistische Schadcodeerkennung. In IX Spezial 03/2010 - Sicher im Netz. Heise Zeitschriften Verlag GmbH & Co. KG : Hannover, pp. 104-107, October 2010.
• Christian Kraetzer, Ronny Merkel, Robert Altschaffel, Eric Clausing, Maik Schott, Jana Dittmann: Modelling Watermark Communication Protocols using the CASPER Modelling Language. Proc. of the 12th ACM Workshop on Multimedia and Security (MM&Sec'10), September 9th-10th, Rome, Italy, ACM, ISBN: 978-1-4503-0286-9, 2010.
  ACM Author-Izer link:
  
  Modelling watermark communication protocols using the CASPER modelling language

  Christian Kraetzer, Ronny Merkel, Robert Altschaffel, Eric Clausing, Maik Schott, Jana Dittmann
  MM&Sec '10 Proceedings of the 12th ACM workshop on Multimedia and security, 2010
• Ronny Merkel, Tobias Hoppe, Christian Kraetzer, and Jana Dittmann: Statistical Detection of Malicious PE-Executables for Fast Offline Analysis. In: B. De Decker and I. Schaumüller-Bichl (Eds.): CMS 2010, LNCS 6109, pp. 93-105. IFIP International Federation for Information Processing, 2010.
• Maik Schott, Christian Kraetzer, Norman Specht, Jana Dittmann, Claus Vielhauer: Ensuring Integrity and Authenticity for Images in Digital Long-Term Preservation. Proc. of Optics, Photonics and Digital Technologies for Multimedia Applications, Conference 7723, SPIE Photonics Europe, Brussels, Belgium, April 12th-15th, 2010.
• Christian Kraetzer and Jana Dittmann: Improvement of information fusion-based audio steganalysis. Proceedings of Multimedia on Mobile Devices 2010, Electronic Imaging Conference 7542, IS&T/SPIE 22nd Annual Symposium, San Jose, CA, USA, January 18th and 19th, 2010.
• Maik Schott, Christian Kraetzer, Jana Dittmann and Claus Vielhauer: Extending the Clark-Wilson security model for digital long-term preservation use cases. Proceedings of Multimedia on Mobile Devices 2010, Electronic Imaging Conference 7542, IS&T/SPIE 22nd Annual Symposium, San Jose, CA, USA, January 18th and 19th, 2010.
• Kun Qian, Christian Kraetzer, Michael Biermann and Jana Dittmann: Audio annotation watermarking with robustness against DA/AD conversion. Proceedings of Media Forensics and Security XII, Electronic Imaging Conference 7541, IS&T/SPIE 22nd Annual Symposium, San Jose, CA, USA, January 18th - 20th, 2010.
• Enrico Herrmann, Andrey Makrushin, Jana Dittmann, Claus Vielhauer, Mirko Langnickel and Christian Kraetzer: Hand-movement-based in-vehicle driver/front-seat passenger discrimination for centre console controls. Proceedings of Algorithms and Systems VIII, Electronic Imaging Conference 7532, IS&T/SPIE 22nd Annual Symposium, San Jose, CA, USA, January 19th and 20th, 2010.
• Andrey Makrushin, Jana Dittmann, Claus Vielhauer, Mirko Langnickel and Christian Kraetzer: The feasibility test of state-of-the-art face detection algorithms for vehicle occupant detection. Proceedings of Algorithms and Systems VIII, Electronic Imaging Conference 7532, IS&T/SPIE 22nd Annual Symposium, San Jose, CA, USA, January 19th and 20th, 2010.

2009

• Christian Kraetzer and Jana Dittmann: Der Einfluss gleichgewichteter Fusion in der Mikrofonforensik unter beispielhafter Nutzung von zwei Klassifikatoren. Proceedings of Informatik 2009 - Workshop Digitale Multimedia-Forensik, 28. September, Lübeck, Germany, 2009.
• Christian Kraetzer, Maik Schott and Jana Dittmann: Unweighted Fusion in Microphone Forensics using a Decision Tree and Linear Logistic Regression Models. Proceedings of the 11th ACM Workshop on Multimedia and Security, September 7-8, Princeton NJ, U.S.A. 2009.
  ACM Author-Izer link:
  
  Unweighted fusion in microphone forensics using a decision tree and linear logistic regression models

  Christian Kraetzer, Maik Schott, Jana Dittmann
  MM&Sec '09 Proceedings of the 11th ACM workshop on Multimedia and security, 2009
• Robert Buchholz, Christian Kraetzer, Jana Dittmann: Microphone Classification Using Fourier Coefficients. Profeedings of 11th Information Hiding Darmstadt, Germany, June 7-10, 2009.
• Tobias Hoppe, Ronny Merkel, Christian Kraetzer and Jana Dittmann: Statistische Schadcodedetektion in ausführbaren Dateien. In Patrick Horster, Peter Schartner (Eds.), D.A.CH Security 2009. syssec Verlag, ISBN: 978-3-00027-488-6, 2009.
• Jana Fruth, Christian Kraetzer and Jana Dittmann: Konzept für sichere Datenhaltung und Datenkommunikation verteilter personenbezogener Daten(sätze) in sozialen Institutionen. Sichere Wege in der vernetzten Welt - Proceedings of 11. Deutscher IT-Sicherheitskongress. SecuMedia Verlag, ISBN: 978-3-922746-97-3, 2009.
• Christian Kraetzer and Jana Dittmann: The Impact of Information Fusion in Steganalysis on the Example of Audio Steganalysis. Proceedings of the Media Forensics and Security XI. Electronic Imaging Conference 7254, IS&T/SPIE 21st Annual Symposium, San Jose, CA, USA, January 18th-22st, 2009. -Additional Material.

2008

• Christian Kraetzer and Jana Dittmann: Impact of Feature Selection in Classification for Hidden Channel Detection on the Example of Audio Data Hiding. Proceedings of the 10th ACM Workshop on Multimedia and Security, September 22-23, 2008, Oxford, UK, 2008.
  ACM Author-Izer link:
  
  Impact of feature selection in classification for hidden channel detection on the example of audio data hiding

  Christian Kraetzer, Jana Dittmann
  MM&Sec '08 Proceedings of the 10th ACM workshop on Multimedia and security, 2008
• Maik Schott, Jana Dittmann, Claus Vielhauer, Christian Kraetzer, Andreas Lang: Integrity and Authenticity for Digital Long-Term Preservation in iRODS Infrastructure. Proceedings of the 6th Int. Workshop for Technical, Economic and Legal Aspects of Business Models for Virtual Goods, Oct 16 - 18, in Poznan, Poland, 2008.
• Andreas Lang, Jana Dittann, and Christian Kraetzer (eds.): ECRYPT D.WVL.21 - Final Report on Watermarking Benchmarking, 2008. 
• Jana Dittmann and Christian Kraetzer: ECRYPT D.MGT.17 Final report on the Gender Action Plan (GAP), 2008.
• Christian Kraetzer, Ronny Merkel und Jana Dittmann: WLAN Steganographie: Neue Ansätze und deren Bewertung. Proceedings of the D-A-CH Security 2008. June 24th and 25th, Berlin, Germany, 2008.
• Thomas Krahmer, Andreas Lang, Jana Dittmann, Christian Kraetzer, and Claus Vielhauer: Location Based Services for Mobile Devices - A Practical Evaluation. Proceedings of the IASTED International Conference on Internet & Multimedia Systems & Applications (EuroIMSA). ISBN: 978-0-88986-728-4. March 17th-19th, 2008. Insbruck, Austria. 2008. 
• Jana Dittmann, Christian Kraetzer (eds.): Proceedings of the 3rd WAVILA Challenge (3rd WaCha or WaCha'07). St. Malo, France, June 14th, 2007. ISBN-13: 978-3-940961-18-1. March 1st, 2008.
• Christian Kraetzer, Jana Dittmann and Ronny Merkel; WLAN Steganography Revisited; Proceedings of the Security, Forensics, Steganography, and Watermarking of Multimedia Contents X. Electronic Imaging Conference 6819, IS&T/SPIE 20th Annual Symposium, San Jose, CA, USA, January 26th-31st, 2008.
• Christian Kraetzer and Jana Dittmann; Cover Signal Specific Steganalysis: the Impact of Training on the Example of two Selected Audio Steganalysis Approaches; Proceedings of the Security, Forensics, Steganography, and Watermarking of Multimedia Contents X. Electronic Imaging Conference 6819, IS&T/SPIE 20th Annual Symposium, San Jose, CA, USA, January 26th-31st, 2008.
• Claus Vielhauer, Maik Schott, Christian Kraetzer and Jana Dittmann; Nested Object Watermarking: Transparency and Capacity Evaluation; Proceedings of the Security, Forensics, Steganography, and Watermarking of Multimedia Contents X. Electronic Imaging Conference 6819, IS&T/SPIE 20th Annual Symposium, San Jose, CA, USA, January 26th-31st, 2008.

2007

• Christian Kraetzer, Andrea Oermann, Jana Dittmann and Andreas Lang; Digital Audio Forensics: A First Practical Evaluation on Microphone and Environment Classification; Proceedings of the ACM Multimedia and Security Workshop 2007, Dallas, Texas, September 20th-21st, 2007, ISBN: 978-1-59593-857-2, 2007.
  ACM Author-Izer link:
  
  Digital audio forensics: a first practical evaluation on microphone and environment classification

  Christian Kraetzer, Andrea Oermann, Jana Dittmann, Andreas Lang
  MM&Sec '07 Proceedings of the 9th workshop on Multimedia & security, 2007
• Andreas Lang, Jana Dittmann, Christian Kraetzer; Digital Watermarking and Perceptual Hashing of Audio Signals with Focus on their Evaluation; Proceedings of the 3rd WAVILA Challenge, June 14th, 2007, St. Malo, France, 2007.
• Christian Kraetzer and Jana Dittmann; Pros and Cons of Mel-cepstrum based Audio Steganalysis using SVM Classification; Proceedings of Information Hiding 2007, June 11-13th, 2007, St. Malo, France, Springer Verlag, Lecture Notes in Computer Science, Vol. 4567, 2007.
• Christian Kraetzer and Jana Dittmann; Mel-Cepstrum Based Steganalysis for VoIP-Steganography; Proceedings of SPIE conference, at the Security, Steganography, and Watermarking of Multimedia Contents IV, IS&T/SPIE Symposium on Electronic Imaging, Jan. 28- Feb. 1st, 2007, San Jose, USA, 2007.
• Mauro Barni, Jana Dittmann and Christian Kraetzer (eds.), Proceedings of the 2nd Wavila Challenge, Geneva, Switzerland, September 28th, 2006. ISBN-13: 978-3-929757-29-3, 2007. 
• Christian Kraetzer; Preface to the Proceedings of the 2nd Wavila Challenge , Geneva, Switzerland, September 28th, 2006, Published 2007. 
• Christian Kraetzer; Visualisation of Benchmarking Results in Digital Watermarking and Steganography; Proceedings of the 2nd Wavila Challenge, Geneva, Switzerland, September 28th, 2006, Published 2007.
• Jana Dittmann and Christian Kraetzer (eds.); ECRYPT D.WVL.16 Report on Watermarking Benchmarking And Steganalysis, 2007.

2006

• Christian Kraetzer, Jana Dittmann, Andreas Lang, Tobias Kuehne; WLAN Steganography: A First Practical Review; Proceedings of the ACM Multimedia and Security Workshop 2006, Geneva, Switzerland, September 26-27th, 2006
• Christian Kraetzer, Jana Dittmann; Früherkennung von verdeckten Kanälen in VoIP-Kommunikation; Proceedings of the BSI-Workshop IT-Frühwarnsysteme, Bonn, Germany, July 12th, 2006
• Christian Kraetzer, Jana Dittmann, Thomas Vogel and Reyk Hillert; Design and Evaluation of Steganography for Voice-over-IP; Proceedings of the IEEE International Symposium on Circuits and Systems, Kos, Greece, May 21-24th , 2006
• Jana Dittmann and Christian Kraetzer (eds.), ECRYPT, European Network of Excellence in Cryptology, D.WVL.10 Audio Benchmarking Tools and Steganalysis, February 6th, 2006
• Christian Kraetzer, Jana Dittmann and Andreas Lang; Transparency benchmarking on audio watermarks and steganography; SPIE conference, at the Security, Steganography, and Watermarking of Multimedia Contents VIII, IS&T/SPIE Symposium on Electronic Imaging, 15-19th January, 2006, San Jose, USA, 2006
• Thomas Vogel, Jana Dittmann, Reyk Hillert and Christian Kraetzer; Design und Evaluierung von Steganographie für Voice-over-IP; Sicherheit 2006 GI FB Sicherheit, GI Proceedings, feb 2006, Magdeburg, Germany

2005

• Jana Dittmann, Christian Kraetzer and Andreas Lang; Attack tuning - Attack Transparency Models and their Impact to Geometric Attacks; Proceedings of the 1st Wavila Challenge, Barcelona, 8th-9th June 2005, ISBN 3-929757-89-3
• Christian Kraetzer and Jana Dittmann (eds.), ECRYPT, European Network of Excellence in Cryptology, D.MGT.6 Initial Report on the Gender Action Plan (GAP), 18th July 2005
• Christian Kraetzer, Improving Attack Transparency of Audio Watermarks by Using Psychoacoustic Methods, Diploma Thesis, Department of Computer Science, Otto-von-Guericke-Universität Magdeburg, Germany, Research Group Multimedia and Security, Department of Computer Science, Otto-von-Guericke-Universität Magdeburg, P.O. Box 4120, 39016 Magdeburg, Germany, April, 2005