Refine
Document Type
- conference proceeding (article) (7)
- Article (1)
- Part of Periodical (1)
Is part of the Bibliography
- no (9)
Keywords
- Internet of Things (6)
- IoTAG (3)
- device identification (2)
- safety-critical infrastructure (2)
- security rating (2)
- Detection System (1)
- Internet of Things (IoT) (1)
- Intrusion (1)
- IoT (1)
- Smart Grid (1)
Institute
- Fakultät Informatik und Mathematik (7)
- Labor Informationssicherheit und Complience (ISC) (7)
- Fakultät Angewandte Natur- und Kulturwissenschaften (1)
- Hochschulleitung/Hochschulverwaltung (1)
- Institut für Angewandte Forschung und Wirtschaftskooperationen (IAFW) (1)
- Sensorik-Applikationszentrum (SappZ) (1)
Begutachtungsstatus
- peer-reviewed (4)
- begutachtet (1)
Forschungsbericht 2016
(2016)
Cloud Computing (CC), Internet of Thing (IoT) and Smart Grid (SG) are separate technologies. The digital transformation of the energy industry and the increasing digitalization in the private sector connect these technologies. At the moment, CC is used as a service provider for IoT. Currently in Germany, the SG is under construction and a cloud connection to the infrastructure has not been implemented yet. To build the SG cloud, the new laws for privacy must be implemented and therefore it’s important to know which data can be stored and distributed over a cloud. In order to be able to use future
innovative services, SG and IoT must be combined. For this, in
the next step we connect the SG infrastructure with the IoT.
A potential insecure device and network (IoT) should be able
to transfer data to and from a critical infrastructure (SG). In
detail, we focus on two different connections: the communication
between the smart meter switching box and the IoT device and the data transferred between the IoT and SG cloud. In our example, a connected charging station with cloud services is connected with a SG infrastructure. To create a really smart service, the charging station needs a connection to the SG to get the current amount of renewable energy in the grid. Private data, such as name, address and payment details, should not be transferred to the IoT cloud. With these two connections, new threads emerge. In this case, availability, confidentiality and integrity must be ensured. A risk analysis over all the cloud connections, including the vulnerability and the ability of an attacker and the resulting risk are developed in this paper.
Internet of Thing (IoT) and Smart Grid (SG) are separate technologies. The digital transformation of the energy industry and the increasing digitalization in the private sector connect these technologies. Currently in Germany, the SG is under construction. In order to use future innovative services, SG and IoT must be combined. For this, we connect the SG Infrastructure with the IoT. A potential insecure device and network (IoT) should be able to transfer data to and from a critical infrastructure (SG). Open research question in this context are the security requirements architecture SG and IoT and the mechanism for authentication and authorisation in future application (SG and IoT). Due to the increasing networking of the systems (SG and IoT) new threats and attack vectors arise. The attacks to the architecture influence the target of authenticity, security and privacy. For the security analysis we focus on two communication points: the communication between the smart meter gateway, and the IoT device. In our example, a connected charging station with cloud services is connected with a SG infrastructure. To create a really smart service, the charging station needs a connection to the SG to get the current amount of renewable energy in the grid. With this two connections, new threats emerge. A security analysis over all the connections, including the vulnerability and the ability of an attacker, is developed in this paper. The analysis shows us challenges of the communication between IoT and SG. For this, we defined technical and organizational requirements for authentication and authorization. Current authentication and authorization mechanisms are no longer sufficient for the defined requirements. We present the Role-based trust model for Safety-critical Systems for these defined requirements. The new trust model is integrated into a role-based access control model. It defines data classes, which separate the sensitive and non-sensitive information.
Miniaturisierte Sensoren basierend auf Oberflächenplasmonenresonanz, Chancen und Herausforderungen
(2021)
Derzeit gibt es zahlreiche Bereiche, wie Umwelt Monitoring und zivile Infrastruktur in denen geeignete Sensoren für die Überwachung der Systeme fehlen. SPR-basierte Sensoren haben das Potential diese Lücke zu schließen. Um für den Einsatz in der Umwelt tauglich zu werden, müssen die Sensoren noch robuster werden. Hier wird eine mögliche Lösung gezeigt.
To ensure the secure operation of IoT devices in the
future, they must be continuously monitored. This starts with
an inventory of the devices, checking for a current software
version and extends to the encryption algorithms and active
services used. Based on this information, a security analysis and
rating of the whole network is possible. To solve this challenge
in the growing network environments, we present a proposal for
a standard. With the IoT Device IdentificAtion and RecoGnition
(IoTAG), each IoT device reports its current status to a central
location as required and provides information on security. This
information includes a unique ID, the exact device name, the
current software version, active services, cryptographic methods
used, etc. The information is signed to make misuse more difficult
and to ensure that the device can always be uniquely identified.
In this paper, we introduce IoTAG in detail and describe the
necessary requirements.
Since IoT devices are potentially insecure and offer great attack potential, in our past research we presented IoTAG, a solution where devices communicate security-related information about themselves. However, since this information can also be exploited by attackers, we present in this paper a solution against the misuse of IoTAG. In doing so, we address the two biggest problems: authentication and pairing with a trusted device. This is solved by introducing a pairing process, which uses the simultaneous authentication of equals algorithm to securely exchange and verify each others signature, and by using the server and client authentication provided by HTTP over TLS. We provide the minimum requirements and evaluate the methods used. The emphasis is on known and already proven methods. Additionally, we analyze the potential consequences of an attacker tapping the IoTAG information. Finally, we conclude that the solution successfully prevents access to IoTAG by unauthorized clients on the same network.
The Internet of Things (IoT) is widely used as a
synonym for nearly every connected device. This makes it really
difficult to find the right kind of scientific publication for the
intended category of IoT. Conferences and other events for
IoT are confusing about the target group (consumer, enterprise,
industrial, etc.) and standardisation organisations suffer from
the same problem. To demonstrate these problems, this paper
shows the results of an analyses over IoT publications in different
research libraries. The number of results for IoT, consumer,
enterprise and industrial search queries were evaluated and a
manual study about 100 publications was done. According to
the research library or search engine, different results about
the distribution of consumer-, enterprise- and industrial- IoT
are visible. The comparison with the results of the manual
evaluation shows that some search queries do not show all desired
publications or that considerably more, unwanted results are
returned. Most researchers do not use the keywords right and
the exact category of IoT can only be accessed via the abstract.
This shows major problems with the use of the term IoT and its
minor limitations.
Increasing cyber-attacks on Internet of Things (IoT) environments are a growing problem of digitized households worldwide. The purpose of this study is to investigate how an intelligent Intrusion Detection System (iIDS) can provide more security in IoT networks with a novel architecture, combining
multiple classical and machine learning approaches. By combining classical security analysis methods and modern concepts of artificial intelligence, we increase the quality of attack detection and can therefore conduct dedicated attack suppression. The architectural image of the iIDS consists of different layers, which in parts achieve self-sufficient results. The results of
the different modules are calculated by means of statement variables and evaluation techniques adapted for the individual module elements and subsequently combined by limit value considerations. The architecture image combines approaches for the analysis and processing of IoT network traffic and
evaluates it to an aggregated score. From this result it can be determined whether the analyzed data indicates device misuse or attempted break-ins into the network. This study answers the questions whether a connection between classical and modern concepts for monitoring and analyzing IoT network traffic can be implemented meaningfully within a reliable architecture of an
iIDS.
Internet of Things (IoT) devices are critical to operate and maintain, because of their number and high connectivity.
A lot of security issues concern IoT devices and the networks they
are integrated. To help getting an overview of an IoT network,
the devices and the security, we propose a scoring system to get
a good impression of IT security. This system generates single
scores for each device, using features like encryption, update
behavior, etc. Furthermore, a summarized score for the whole
network is calculated, to show the status of the network security
in an easy way for the administrator. To enable the scoring
system, a precise list of the existing devices and their operating
status is necessary. To achieve this, we present an open standard
for the IoT Device IdentificAtion and RecoGnition (short IoTAG),
which requires that devices report, e.g., their name, an unique ID,
the firmware version and the supported encryption. The proposed
standard is described in detail and an implementation guideline
is given in this paper. Additionally, information about how to
realize the serialization, the integrity and the communication
with IoTAG.