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“In a paper they presented at the Usenix Security Symposium in August, Martin Mulazzani and his colleagues at SBA Research [PDF], in Vienna, described several ways in which deduplication could be used to access files uploaded to Dropbox. ” (quoted verbatim from Christian Cachin et al., A Cloud you can Trust, IEEE Spectrum, Dec 2011)
At BSidesVienna 2012, Manuel Leithner gave a talk on public transport titled “Hackers on a train – Toying with transportation”, detailing equipment and possible flaws in the on-board network infrastructure and ticketing system of WESTbahn.
Manuel Leithner’s book review was just published (more…)
Die aktuelle Ausgabe der Zeitschrift Öffentliche Sicherheit enthält einen Artikel zum IKT-Sicherheitsseminar, wo Markus Klemen einen Vortrag zum Thema Soziale Netzwerke gehalten hat.
The key researcher Stefan Katzenbeisser gave a talk at 28C3 (derStandard.at, heise.de, futurezone.at, diePresse.com, reuters.com, telegraph.co.uk, bbc.co.uk)
Ein Praktikumsantrag im Rahmen des Femtech-Programms (http://www.ffg.at/femtech-praktika) wurde angenommen. Katharina Krombholz wird im Jänner ein Praktikum und eine Diplomarbeit zum Sicherheit in Sozialen Netzwerken beginnen und bestehende Forschungsarbeiten unterstützen.
Johann Steszgal (ETSI ITS WG5) gives a lecture on Security Issues of IPv6 Communications in Cooperative Intelligent Transportation Systems for students of our class Organizational Aspects of Security.
Our researchers plan future research in cooperation with NII:
Key researcher Stefan Katzenbeisser gives a guest lecture on enterprise rights management for students of our class Advanced Internet Security.
Starting at 3pm
Dr. N. Sonehara, “Data-centric Socio-Informatics Supporting Public Policy Decision Making, NII and ROIS/TRIC.
Dr. Y. Ichifuji, “Web Data Driven Information Circulation and Its application of Resilience Evaluation”, ROIS/TRIC
Dr. I. Echizen, “Multimedia Location Privacy Control Mechanism”, NII
Dr. S. Wohlgemuth, “Resilient Social System Design Methods”, ROIS/TRIC, Associate Professor at NII / ROIS
Heute findet die Generalversammlung statt. Markus Klemen gibt einen Überblick über das erfolgreiche letzte Jahr und die Revision des K-ind-Zeitraums.
Sigrun Goluch: The development of homomorphic cryptography From RSA to Gentry’s privacy homomorphism
Ever since the discovery of public-key cryptography by Diffie and Hellman in 1976, the necessity for total privacy of digital data has become stronger and stronger, especially since the internet has become an indispensable part of both our private and work lives. Naturally, the question for more secure encryption schemes arose in the past few decades.
One way to achieve con?dentiality in applications, such as online banking, electronic voting, virtual networks etc. are
homomorphic and especially fully homomorphic cryptographic schemes. Fully homomorphic cryptosystems or privacy homomorphisms were introduced by Rivest, Adleman, and Dertouzous in 1978. They asked for a way to allow a third, untrusted party to carry out extensive computation on encrypted data, without having to decrypt fi?rst. The search for fully homomorphic cryptosystems began and ended almost 4 decades later when Craih Gentry published his fully homomorphic method. Although not yet useful for practical applications, it ended the long search for the in 1978 emerged question about the existence of privacy homomorphisms.
We now have a Twitter account for our news section. Follow us at @SBA_Research on Twitter.
“Die Wächter über Datenströme und Web- attacken sind am Institut für Rechnergestützte Automation der TU Wien daheim. Jetzt haben sie einen der wichtigsten Hackerwettbewerbe weltweit gewonnen. Mit im Team: Martina Lindorfer aus Linz” (OÖN)
Edgar Weippl is the new chair of the WG and SBA hosts the website (more…)
Das Team der TU Wien “We_0wn_Y0u” konnte beim iCTF 2011 unter der Leitung von Adrian Dabrowski den Sieg erringen. In einem bis zuletzt spannenden neunstündigem Wettbewerb gegen über 85 internationale Mitbewerberteams stellten auch Martin Mulazzani, Peter Frühwirt und Manuel Leithner als Vertreter von SBA Research ihre Fähigkeiten rund um Angriffe auf und Verteidigung von IT-Infrastruktur unter Beweis.
Das finale Scoreboard ist hier ersichtlich. Mit einem breit gefächertem internationalen Teilnahmefeld (u.A. USA, Russland und China) zählt die iCTF zu den größten Capture the Flag-Contests weltweit. Foto
Pressecoverage von Standard, Presse, Kurier, Krone, Österreich
SBA will offer an ERCIM fellowship (co-financed by the EU project “ABCDE”) to Dimitris Simos
Today our scientific board met to review past research and discuss further research directions.
Kai Zhang (Lawrence Berkeley National Laboratory, US Department of Energy),
Topic: Matrix approximation.
Nov 28, 3pm, SBA
Title: Large Scale Unsupervised and Semi-Supervised Learning
Abstract
Clustering is a fundamental data explorative step in pattern recognition and machine learning. This talk involves two types of clustering paradigms, the mixture models and graph-based clustering methods, with the primary focus on how to improve the scaling behavior of related algorithms for large-scale application. The first part is on simplifying mixture models, and the second part is on applying low-rank matrix approximation with novel sampling scheme in a large family of mainstream learning algorithms. Topics on community detection and large scale supervised learning (SVM) will also be included.
Edgar Weippl im Interview mit den Niederösterr. Nachrichten (Extrabeilage Sicher Leben)
“Wir haben die Cloud Lösung von A1 einer Architektur-Analyse unterzogen und können hiermit bestätigen, dass die Daten in der A1 Austria Cloud nur auf Servern gespeichert werden, die in Österreich betrieben werden”, bestätigt Markus Klemen, Geschäftsführer von Secure Business Austria Research. (mehr…)
Lorenz Zechner and Peter Kieseberg organize the INMOTOS Workshop.
“Oft sind es erstaunlich simple Sicherheitslücken, die im Internet für Datenklau-Attacken ausgenützt werden.” (Gastkommentar Edgar Weippl, Wiener Zeitung)
Manuel Leithner’s book review was just published (DOI)
New Scientist: Markus Huber has developed software to help police use online clues to solve offline crimes
