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Nachklausur IT-Sicherheitsmanagement für vernetzte Systeme im SS 20

Die Nachklausur wird am 27.07. um 8:00 Uhr im Tulla-Hörsaal (Geb 11.40) stattfinden.

Die Anmeldung im CAS ist ab jetzt bis zum 20.07., 23:59 Uhr möglich. Eine Online-Abmeldung ist bis zum 26.07. um 23:59 Uhr möglich.

Für die Klausur sind keine Hilfsmittel (außer einem Wörterbuch) zugelassen. Sollten Sie ein Wörterbuch verwenden wollen, muss dieses beim Einlass von der Aufsicht überprüft werden.

Weitere Informationen zur Koordinierung des Einlasses und zur Beachtung des Infektionsschutzes werden rechtzeitig vor der Klausur an die Teilnehmer/-innen übermittelt.

Nachklausur IT-Sicherheitsmanagement für vernetzte Systeme im SS 20

Die Nachklausur wird am 27.07. um 8:00 Uhr im Tulla-Hörsaal (Geb 11.40) stattfinden.

Die Anmeldung im CAS ist ab jetzt bis zum 20.07., 23:59 Uhr möglich. Eine Abmeldung ist bis zum 26.07. um 23:59 Uhr möglich.

Für die Klausur sind keine Hilfsmittel (außer einem Wörterbuch) zugelassen. Sollten Sie ein Wörterbuch verwenden wollen, muss dieses beim Einlass von der Aufsicht überprüft werden.

Weitere Informationen zur Koordinierung des Einlasses und zur Beachtung des Infektionsschutzes werden rechtzeitig vor der Klausur an die Teilnehmer/-innen übermittelt.

2020/06/19: 4th International Workshop on Cryptocurrencies and Blockchain Technology (CBT 2020)

On September, 17th and 18th the 4th International Workshop on Cryptocurrencies and Blockchain Technology" (CBT 2020) will take place, co-located with ESORICS 2020. Prof. Hartenstein will serve on the program commitee of the workshop. We encourage submissions related to cryptocurrencies and blockchain technology (see call for papers).

2020/06/11: Matrix Decomposition: Analysis of an Access Control Approach on Transaction-based DAGs without Finality vorgestellt auf der SACMAT 2020

At the 25th ACM Symposium on Access Control Models and Technologies, we presented our paper Matrix Decomposition: Analysis of an Access Control Approach on Transaction-based DAGs without Finality. In this paper, we decompose, abstract and analyze the access control approach of the Matrix middleware for decentralized applications, and show that Matrix can be seen as a Distributed Ledger Technology without strict Consensus. This has interesting consequences when compared to traditional access control approaches, which we discuss as well.

The talk was recorded, and will be publishde by SACMAT at a later date. The publication was also the topic of this blog post on Matrix.org, which covers the Matrix.org view on our findings.

Matrix Decomposition: Analysis of an Access Control Approach on Transaction-based DAGs without Finality presented at SACMAT

At the 25th ACM Symposium on Access Control Models and Technologies, we presented our paper Matrix Decomposition: Analysis of an Access Control Approach on Transaction-based DAGs without Finality. In this paper, we decompose, abstract and analyze the access control approach of the Matrix middleware for decentralized applications, and show that Matrix can be seen as a Distributed Ledger Technology without strict Consensus. This has interesting consequences when compared to traditional access control approaches, which we discuss as well.

The talk was recorded, and will be publishde by SACMAT at a later date. The publication was also the topic of this blog post on Matrix.org, which covers the Matrix.org view on our findings.

2020/04/06: Awarded Zeek Packages

The Zeek package contest honors extensions for the well-known network monitoring tool Zeek. In the Zeek Package Contest 2019, two extensions developed in the research group were recognized. The Emojifier won the category for Zeek 3.0 compatible extensions and the Intel-Limiter was awarded the second place in the main competition.

2020/04/01: COVID-2019 Pandemic: Online Teaching

The information on online teaching due to the COVID 19 pandemic can now be found on our page Teaching.

Understanding Blockchains: Lecture at VDE Mittelbaden on 24/03/2020 (cancelled)

Prof. Hannes Hartenstein will give a presentation at Hochschule Karlsruhe on the 24th of March 2020 at 5:30 PM with the title "Geglückte Verkettung von Zuständen: Blockchains Verstehen" (in German). In this lecture, the basic elements of blockchains will be explained in a generally understandable way and insights into the communication behavior in the Bitcoin network will be presented. Then, existing challenges and approaches to solutions, especially with regard to security and scalability, as well as the automatic execution of contracts on blockchains ("Smart Contracts") are considered. The lecture concludes with a socio-technical view on questions of power in blockchain-based systems. Further Informations at VDE Mittelbaden.

Access Control Systems Lab: Best Lab SS2019

On the basis of the teaching evaluation of KIT carried out every semester, the KIT Faculty of Informatics awarded our "Praktikum Access Control Systems" as best lab for the summer semester 2019.

Many thanks to the students for this evaluation result!

2020/01/14: New date for written exam "Angewandte Themen für das Informatik-Lehramt"

Due to a collision with "Maschinelles Lernen 1", the written exam in "Angewandte Themen für das Informatik-Lehramt" is now on 13 March 2020 at 11:30PM, Bldg. 50.34, Room -101.

A Glimpse of the Matrix: Scabalitiy Issues of a New Message-Oriented Data Synchronization Middleware presented at ACM/IFIP International Middleware Conference

At the 20th International Middleware Conference at UC Davis, California, we presented our poster A Glimpse of the Matrix: Scalability issues of a new message-oriented data synchronization middleware on 2019-12-11. We describe measurements of the public federation of the [matrix] network and discuss scalability issues of the current message routing mechanism. Additional details can be found in the Extended Tech Report. More images by @middleware2019 on twitter.

2019/09/26: TEE-Based Distributed Watchtowers for Fraud Protection in the Lightning Network presented on ESORICS CBT'19

At the 3rd International Workshop on Cryptocurrencies and Blockchain Technology (CBT'19) on 26th and 27th Septembre, 2019, co-located with ESORICS 2019 we presented our work "TEE-Based Distributed Watchtowers for Fraud Protection in the Lightning Network". We propose TEE Guard, a distributed watchtower solution for the Lightning Network that utilises Trusted Execution Environments.

2019/06/05: Outstanding Paper Award

Out conference submission "Access Control for Binary Integrity Protection using Ethereum" has been published in the respective proceedings. Furthermore, our contribution received the "Best Paper Runner Up" award.

2019/06/25: Awarding of the SICK-Wissenschaftspreis for master thesis on Bitcoin

The SICK-Wissenschaftspreis for the best thesis 2017 was awarded to Matthias Grundmann for his master thesis titled "Analysis and Evaluation of Analysis Methods for Topology Inference in the Bitcoin Peer-to-Peer Network" at the annual Tag der Informatik. In this thesis he discussed possibilities for dertermining the topology of the Bitcoin peer-to-peer network and introduced two new methods to accomplish this.

2019/05/29: Banklaves: Concept for a Trustworthy Decentralized Payment Service for Bitcoin presented on IEEE ICBC'19

On the IEEE International Conference on Blockchain and Cryptocurrency from 14-17 May 2019 in Seoul, South Korea we presented our publication "Banklaves: Concept for a Trustworthy Decentralized Payment Service for Bitcoin", which explores a new way to implement a second layer architecture for cryptocurrencies using Trusted Execution Environments.

2019/05/30: Banklaves: Concept for a Trustworthy Decentralized Payment Service for Bitcoin presented on IEEE ICBC'19

On the IEEE International Conference on Blockchain and Cryptocurrency from 14-17 May 2019 in Seoul, South Korea we presented our publication "Banklaves: Concept for a Trustworthy Decentralized Payment Service for Bitcoin", which explores a new way to implement a second layer architecture for cryptocurrencies using Trusted Execution Environments.

2019/05/21: New Publication - Access Control for Binary Integrity Protection using Ethereum

In the paper "Access Control for Binary Integrity Protection using Ethereum", we present a concept for representing and managing software on a public Blockchain, like Ethereum, for the purpose of integrity protection and revocation thereof. The work will be presented during the ACM Symposium on Access Control Models and Technologies (SACMAT) at the beginning of June in Toronto and will be available via KITOpen later.

2019/03/15: Registration to Courses in the Summer Term 2019

Registration to the ACS Practical Course as well as the Seminar "Hot Topics in Decentralized Systems" will open on the 1st of April at 2:00pm via the Wiwi-Portal. Further information can be found on the pages of the respective course.

Edit: Registration for the Seminar was moved to Friday, 5th of April at 10:00am.

2019/01/28: 3rd ForDigital Blockchain Workshop

On February 14th and 15th, 2019, the 3rd ForDigital Blockchain Workshop will take place at KIT. Researchers and practitioners in the field of Blockchains are invited to discuss challenges and opportunities of blockchain technologies and to talk about work currently being done.

2019/01/19: DSN Traveller in the favourite Matrix projects 2018

Ben Parson, Developer Advocate for Matrix.org, mentioned the DSN Traveller, which was developed in the group as part of the master's thesis of Florian Jacob, in his favourite Matrix projects 2018.

2019/01/07: New Publication - Towards Application of Cuckoo Filters in NSM

In the paper "Towards Application of Cuckoo Filters in Network Security Monitoring" we study the feasibility of applying the recently proposed cuckoo filters to improve space efficiency for set membership testing in Network Security Monitoring, focusing on the example of Threat Intelligence matching. The work was presented in November 2018 on the 14th International Conference on Network and Service Management (CNSM).

2018/11/30: Successful PhD graduation - Till Neudecker

On November 30th Till Neudecker successfully defended his dissertation. Congratulations!

2018/11/15: Thesis in Cooperation with IISM

The research group Information & Market Engineering headed by Prof. Weinhardt offers a cross-faculty thesis titled Dezentrales Handeln in Energiemärkten - Was kann die Blockchain [in German] starting January 2019, which will be co-supervised by us. The announcemend is aimed primarily at Master computer science students, but Bachelor students are also welcome to apply.

2018/10/22: KASTEL-Newsletter Q3

We contributed two articles to the latest KASTEL-Newsletter (in German). In the column "Insights into our Research" (p. 19) we give, as the name implies, a generally comprehensible overview of one of our latest publications, and in the news section (p. 22) we report on the recent Bro Workshop Europe.

2018/09/19: Bro Workshop Europe

On 18th and 19th of September our group hosted the first European Bro Workshop in cooperation with the International Computer Science Institute (ICSI). Bro is an open source network monitoring software project.

2018/09/07: New Publication - Atomic Information Disclosure of Off-Chained Computations Using Threshold Encryption

Our workshop submission Atomic Information Disclosure of Off-Chained Computations Using Threshold Encryption has been published in the Lecture Notes in Computer Science.

2018/09/10: New Publication - Network Layer Aspects of Permissionless Blockchains

Our survey Network Layer Aspects of Permissionless Blockchains has been published by the IEEE Journal "Communications Surveys & Tutorials".

Neue Veröffentlichung: Network Layer Aspects of Permissionless Blockchains
2018/07/27: Exam IT-Sicherheitsmanagement (summer term 2018)

You cannot longer register for the exam. The exam will be held on August 1st, 2018 at 10:30am in "Redtenbacher-Hörsaal". More information can be found on the lecture's homepage.

2018/07/16: Bro Workshop Europe

Our group hosts the first European Bro Workshop in September of this year. Bro is an open source network monitoring software project. Read more.

2018/06/22: Award for the best application-related master thesis

We're happy to announce that in the context of the "Tag der Informatik 2018" the master thesis of Matthias Grundmann has been awarded with the prize for the best application-related master thesis. The prize was sponsored by Robert Bosch GmbH.

2018/04/26: PET-CON 2018.1

On April 19th and 20th, 2018 the PET-CON 2018.1 took place in Berlin. The workshop was organized by the special interest group Privacy Enhancing Technologies of the Gesellschaft für Informatik. From the DSN group our staff members Marc Leinweber and Matthias Grundmann participated in the workshop.

2018/04/26: Start of the ACS-Lab

The ACS-Lab starts today (2018/04/26). The Lab takes place at 2pm in SCC's F-Pool.

2018/04/23: CBT 2018

Am 6. und 7. September findet in Barcelona im Anschluss an die ESORICS 2018 der Internationale Workshop Cryptocurrencies and Blockchain Technologies unter Mitwirkung von Prof. Hartenstein statt.

2018/04/10: SoK Seminar

The first meeting of the SoK seminar takes place on April 23rd, 2018 at 2pm in room 314 of building 20.21 (SCC).

2018/04/06: Information regarding second IT-Security Management exam

The second exam for IT-Security Management takes place on Wednesday, 2018/08/01, at 10:30 AM in the Redtenbacher-Lecture Hall. Further details concerning (de-)registration will follow in time.

2018/04/04: New homepage online!

The homepage of the research group has been reworked and is now online in its new form.