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On Covert Acoustical Mesh Networks in Air [article]

Michael Hanspach, Michael Goetz
2014 arXiv   pre-print
More details on the concept of an audio filtering guard are provided by Hanspach and Keller [17] .  ... 
arXiv:1406.1213v1 fatcat:yngntnk6cbborbidrqinnho4de

Service-Fingerprinting mittels Fuzzing [article]

Michael Hanspach, Ralf Schumann, Stefan Schemmer, Sebastian Vandersee
2014 arXiv   pre-print
Service fingerprinting (i.e. the identification of network services and other applications on computing systems) is an essential part of penetration tests. The main contribution of this paper is a study on the improvement of fingerprinting tools. By applying mutation-based fuzzing as a fingerprint generation method, subtle differences in response messages can be identified. These differences in response messages provide means for the differentiation and identification of network services. To
more » ... ve the feasibility of the approach, an implementation of a fingerprinting tool for ftp servers is presented and compared to preexisting fingerprinting tools. As a result of this study it is shown that mutation-based fuzzing is an appropriate method for service fingerprinting that even offers advantages over preexisting methods.
arXiv:1403.0766v1 fatcat:t5qfo6xgivefljmpide4xbs5om

Verbesserung von OS- und Service-Fingerprinting mittels Fuzzing [article]

Michael Hanspach
2014 arXiv   pre-print
Mörike, Michael (Hrsg.) (2004), S. 86 56 Vgl. Kapitel 2.5.1 57 Vgl.  ...  Mörike, Michael (Hrsg.) (2004), S. 76 7 Vgl. Johansson und Riley (2005) 8 Vgl. BSI (2003) gleichen Dienstes.  ... 
arXiv:1403.0439v1 fatcat:gupva5v2xvb7ne5l7kt2fcgk6y

On Covert Acoustical Mesh Networks in Air

Michael Hanspach, Michael Goetz
2013 Journal of Communications  
More details on the concept of an audio filtering guard are provided by Hanspach and Keller [19] .  ...  In a loosely related approach, an operating system covert channel based on acoustic wave propagation has already been constructed by Hanspach and will be described in a future article.  ... 
doi:10.12720/jcm.8.11.758-767 fatcat:bjj2tcrf6veohb2ihqzdzllwtu

A Taxonomy for Attack Patterns on Information Flows in Component-Based Operating Systems [article]

Michael Hanspach, Jörg Keller
2014 arXiv   pre-print
[15] , and Hanspach and Keller [13] .  ...  Secondly, Hanspach and Goetz [12] describe an approach where a component-based operating system participates in a covert acoustical mesh network of infected nodes and where the communication range can  ... 
arXiv:1403.1165v1 fatcat:cx4f7ndgcbalfh6mrsxfnaf6ca

A Case Study on Covert Channel Establishment via Software Caches in High-Assurance Computing Systems [article]

Wolfgang Schmidt, Michael Hanspach, Jörg Keller
2015 arXiv   pre-print
Covert channels can be utilized to secretly deliver information from high privileged processes to low privileged processes in the context of a high-assurance computing system. In this case study, we investigate the possibility of covert channel establishment via software caches in the context of a framework for component-based operating systems. While component-based operating systems offer security through the encapsulation of system service processes, complete isolation of these processes is
more » ... ot reasonably feasible. This limitation is practically demonstrated with our concept of a specific covert timing channel based on file system caching. The stability of the covert channel is evaluated and a methodology to disrupt the covert channel transmission is presented. While these kinds of attacks are not limited to high-assurance computing systems, our study practically demonstrates that even security-focused computing systems with a minimal trusted computing base are vulnerable for such kinds of attacks and careful design decisions are necessary for secure operating system architectures.
arXiv:1508.05228v1 fatcat:mtali7t4gnbjfd4jnog54julpy

In Guards We Trust: Security and Privacy in Operating Systems Revisited

Michael Hanspach, Jorg Keller
2013 2013 International Conference on Social Computing  
An ultrasonic-based covert channel has been tested by Hanspach and will be described in a future article.  ... 
doi:10.1109/socialcom.2013.87 dblp:conf/socialcom/HanspachK13 fatcat:kuxgjhjhzbe6pegvbz4snwv6g4

A social–ecological perspective on harmonizing food security and biodiversity conservation

Hannah Wittman, Michael Jahi Chappell, David James Abson, Rachel Bezner Kerr, Jennifer Blesh, Jan Hanspach, Ivette Perfecto, Joern Fischer
2016 Regional Environmental Change  
The major challenges of improving food security and biodiversity conservation are intricately linked. To date, the intersection of food security and biodiversity conservation has been viewed primarily through an agricultural "production lens"-for example, via the land sparing/sharing framework, or the concept of sustainable intensification. However, a productionist perspective has been criticized for being too narrow, and failing to consider other relevant factors, including policy, equity, and
more » ... diversity. We propose an approach that conceptualizes rural landscapes as social-ecological systems embedded within intersecting multi-scalar processes. Based on such a framing, empirical research can be more clearly set in the context of system properties that may influence food security, biodiversity conservation, or both. We illustrate our approach through a description of contrasting agricultural systems within Brazil's Cerrado region. We emphasize the need for new empirical research involving systematic comparisons of social-ecological system properties in landscapes threatened by food insecurity and ecosystem degradation.
doi:10.1007/s10113-016-1045-9 pmid:32025201 pmcid:PMC6979715 fatcat:5xxx4ww5mnhsna5sbfvaqamd2i

Calcium binding to a disordered domain of a type III-secreted protein from a coral pathogen promotes secondary structure formation and catalytic activity

Elisabeth Hoyer, Julius Knöppel, Martina Liebmann, Michael Steppert, Manuel Raiwa, Olivia Herczynski, Erik Hanspach, Susanne Zehner, Michael Göttfert, Satoru Tsushima, Karim Fahmy, Jana Oertel
2019 Scientific Reports  
Strains of the Gram-negative bacterium Vibrio coralliilyticus cause the bleaching of corals due to decomposition of symbiotic microalgae. The V. coralliilyticus strain ATCC BAA-450 (Vc450) encodes a type III secretion system (T3SS). The gene cluster also encodes a protein (locus tag VIC_001052) with sequence homology to the T3SS-secreted nodulation proteins NopE1 and NopE2 of Bradyrhizobium japonicum (USDA110). VIC_001052 has been shown to undergo auto-cleavage in the presence of Ca2+ similar
more » ... the NopE proteins. We have studied the hitherto unknown secondary structure, Ca2+-binding affinity and stoichiometry of the "metal ion-inducible autocleavage" (MIIA) domain of VIC_001052 which does not possess a classical Ca2+-binding motif. CD and fluorescence spectroscopy revealed that the MIIA domain is largely intrinsically disordered. Binding of Ca2+ and other di- and trivalent cations induced secondary structure and hydrophobic packing after partial neutralization of the highly negatively charged MIIA domain. Mass spectrometry and isothermal titration calorimetry showed two Ca2+-binding sites which promote structure formation with a total binding enthalpy of -110 kJ mol-1 at a low micromolar Kd. Putative binding motifs were identified by sequence similarity to EF-hand domains and their structure analyzed by molecular dynamics simulations. The stoichiometric Ca2+-dependent induction of structure correlated with catalytic activity and may provide a "host-sensing" mechanism that is shared among pathogens that use a T3SS for efficient secretion of disordered proteins.
doi:10.1038/s41598-019-42898-0 pmid:31068617 pmcid:PMC6506597 fatcat:6qscixujujavppiwf4gw4gwjvi

The Traveling Heads 2.0: Multicenter Reproducibility of Quantitative Imaging Methods at 7 Tesla

Maximilian N. Voelker, Oliver Kraff, Steffen Goerke, Frederik B. Laun, Jannis Hanspach, Kerrin J. Pine, Philipp Ehses, Moritz Zaiss, Andrzej Liebert, Sina Straub, Korbinian Eckstein, Simon Robinson (+11 others)
2021 NeuroImage  
This study evaluates inter-site and intra-site reproducibility at ten different 7 T sites for quantitative brain imaging. Two subjects - termed the "traveling heads" - were imaged at ten different 7 T sites with a harmonized quantitative brain MR imaging protocol. In conjunction with the system calibration, MP2RAGE, QSM, CEST and multi-parametric mapping/relaxometry were examined. Quantitative measurements with MP2RAGE showed very high reproducibility across sites and subjects, and errors were
more » ... n concordance with previous results and other field strengths. QSM had high inter-site reproducibility for relevant subcortical volumes. CEST imaging revealed systematic differences between the sites, but reproducibility was comparable to results in the literature. Relaxometry had also very high agreement between sites, but due to the high sensitivity, differences caused by different applications of the B1 calibration of the two RF coil types used were observed. Our results show that quantitative brain imaging can be performed with high reproducibility at 7 T and with similar reliability as found at 3 T for multicenter studies of the supratentorial brain.
doi:10.1016/j.neuroimage.2021.117910 pmid:33647497 fatcat:i5tbsvqdmve5fbfot2g5uox5bu

Calcium binding to a disordered domain of a type III-secreted protein from a coral pathogen promotes secondary structure formation and catalytic activity [article]

Elisabeth Hoyer, Julius Knöppel, Martina Liebmann, Michael Steppert, Manuel Raiwa, Olivia Herczynski, Erik Hanspach, Susanne Zehner, Michael Göttfert, Satoru Tsushima, Karim Fahmy, Jana Oertel (+2 others)
2019
Strains of the Gram-negative bacterium Vibrio coralliilyticus cause the bleaching of corals due to decomposition of symbiotic microalgae. The V. coralliilyticus strain ATCC BAA-450 (Vc450) encodes a type III secretion system (T3SS). The gene cluster also encodes a protein (locus tag VIC_001052) with sequence homology to the T3SS-secreted nodulation proteins NopE1 and NopE2 of Bradyrhizobium japonicum (USDA110). VIC_001052 has been shown to undergo auto-cleavage in the presence of Ca 2+ similar
more » ... o the NopE proteins. We have studied the hitherto unknown secondary structure, Ca 2+ -binding affinity and stoichiometry of the "metal ion-inducible autocleavage" (MIIA) domain of VIC_001052 which does not possess a classical Ca 2+ -binding motif. CD and fluorescence spectroscopy revealed that the MIIA domain is largely intrinsically disordered. Binding of Ca 2+ and other di- and trivalent cations induced secondary structure and hydrophobic packing after partial neutralization of the highly negatively charged MIIA domain. Mass spectrometry and isothermal titration calorimetry showed two Ca 2+ -binding sites which promote structure formation with a total binding enthalpy of −110 kJ mol −1 at a low micromolar K d . Putative binding motifs were identified by sequence similarity to EF-hand domains and their structure analyzed by molecular dynamics simulations. The stoichiometric Ca 2+ -dependent induction of structure correlated with catalytic activity and may provide a "host-sensing" mechanism that is shared among pathogens that use a T3SS for efficient secretion of disordered proteins.
doi:10.15488/5060 fatcat:6azm7xjt5rcflbcehpz7mr2quy

Page 79 of Journal for the Study of the Old Testament Vol. , Issue 99 [page]

2002 Journal for the Study of the Old Testament  
Exegesis and Modern Translations 79 HANSPACH, ALEXANDER, /nspirierte Interpreten: Das Prophetenverstdndnis der Chronikbiicher und sein Ort in der Religion und Literatur zur Zeit des Zweiten Tempels (Arbeiten  ...  BROWN and MICHAEL J. MOORE, Joshua, Judges, Ruth (New International Biblical Commentary Old Testament, 5; Peabody, MA: Hendrickson; Carlisle: Paternoster Press, 2000), pp. xvii + 398. $11.95 (paper).  ... 

Introduction

The Editorial Board
2021 Bulletin of the Detroit Institute of Arts  
Commissioned for the chapel of Saint Michael in Harburg Castle, in present-day Bavaria, the statue remained on site for more than five hundred years.  ...  The opening article, "Deconstructing an Ancient Egyptian Mummy Portrait," is a collaboration between three members of the DIA's Conservation Department-Christina Bisulca, Ellen Hanspach-Bernal, and Aaron  ... 
doi:10.1086/718821 fatcat:xn6vufsnjfadhp4vaegi7roiqe

Habitat features act as unidirectional and dynamic filters to bat use of production landscapes

Joanna M. Burgar, Vicki L. Stokes, Michael D. Craig
2017 Biological Conservation  
., Hanspach et al., 2012; Pereira et al., 2004) and thus, can help inform efforts to conserve biodiversity in production landscapes.  ...  Bat functional trait groups are typically used to identify filters and predict bat habitat use across a variety of landscapes (Blakey et al., 2016; Hanspach et al., 2012; Müller et al., 2013; Silvis et  ... 
doi:10.1016/j.biocon.2017.02.024 fatcat:wub6uhnxdbevfdjf77ta5kmvfq

Multi-atlas tool for automated segmentation of brain gray matter nuclei and quantification of their magnetic susceptibility

Xu Li, Lin Chen, Kwame Kutten, Can Ceritoglu, Yue Li, Ningdong Kang, John Hsu, Ye Qiao, Hongjiang Wei, Chunlei Liu, Michael Miller, Susumu Mori (+3 others)
2019 NeuroImage  
Susumu Mori and Michael I. Miller own "AnatomyWorks". Susumu Mori is its CEO.  ...  ., 2016; Hanspach et al., 2017; Keuken et al., 2014; Keuken and Forstmann, 2015; Schweser et al., 2018; Visser et al., 2016) .  ... 
doi:10.1016/j.neuroimage.2019.02.016 pmid:30738207 pmcid:PMC6464637 fatcat:jn4mkiktlfet5pyk6rov3ndcte
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