arXiv subjects

Steffen Wendzel

Publications and source records attributed to Steffen Wendzel.

22 records · Page 2Linked to original sources

arXiv2015

Analysis of Human Awareness of Security and Privacy Threats in Smart Environments

Smart environments integrate Information and Communication Technologies (ICT) into devices, vehicles, buildings and cities to offer an increased quality of life, energy efficiency and economical sustainability. In this perspective, the individual has a core role and so has networking, which enables such entities to cooperate. However, the huge amount of sensitive data, social aspects and the mixed set of protocols offer many opportunities to inject hazards, exfiltrate information, mass profiling of citizens, or produce a new wave of attacks. This work reviews the major risks arising from the usage of ICT-techniques for smart environments, with emphasis on networking. Its main contribution is to explain the role of different stakeholders for causing a lack of security and to envision future threats by considering human aspects.

cs.CY↗

arXiv2014

Hidden and Uncontrolled - On the Emergence of Network Steganographic Threats

Network steganography is the art of hiding secret information within innocent network transmissions. Recent findings indicate that novel malware is increasingly using network steganography. Similarly, other malicious activities can profit from network steganography, such as data leakage or the exchange of pedophile data. This paper provides an introduction to network steganography and highlights its potential application for harmful purposes. We discuss the issues related to countering network steganography in practice and provide an outlook on further research directions and problems.

cs.CR↗

arXiv2014

On Importance of Steganographic Cost For Network Steganography

Network steganography encompasses the information hiding techniques that can be applied in communication network environments and that utilize hidden data carriers for this purpose. In this paper we introduce a characteristic called steganographic cost which is an indicator for the degradation or distortion of the carrier caused by the application of the steganographic method. Based on exemplary cases for single- and multi-method steganographic cost analyses we observe that it can be an important characteristic that allows to express hidden data carrier degradation - similarly as MSE (Mean-Square Error) or PSNR (Peak Signal-to-Noise Ratio) are utilized for digital media steganography. Steganographic cost can moreover be helpful to analyse the relationships between two or more steganographic methods applied to the same hidden data carrier.

cs.MM↗

arXiv2011

Protocol Channels

Covert channel techniques are used by attackers to transfer data in a way prohibited by the security policy. There are two main categories of covert channels: timing channels and storage channels. This paper introduces a new storage channel technique called a protocol channel. A protocol channel switches one of at least two protocols to send a bit combination to a destination. The main goal of a protocol channel is that packets containing covert information look equal to all other packets within a network, what makes a protocol channel hard to detect.

cs.CR↗