The aim of this work is to analyze the reports on cluster headache attacks collected online in the citizen science project CLUE with respect to the effectiveness of drugs taken during the attacks. The collection of data within the framework of citizen science projects opens up the possibility of investigating the effectiveness of acute medication on the basis of a large number of individual attacks instead of a simple survey of patients.

As known for a decade, cold boot attacks can break software-based disk encryption when an attacker has physical access to a powered-on device, including Android smartphones. Raw memory images can be obtained by resetting a device and rebooting it with a malicious boot loader, or—on systems where this is not possible due to secure boot or restrictive BIOS settings—by a physical transplantation of RAM modules into a system under the control of the attacker. Based on the memory images of a device, different key recovery algorithms have been proposed in the past to break Full-Disk Encryption (FDE), including BitLocker, dm-crypt, and also Android’s FDE. With Google’s switch from FDE to File-based Encryption (FBE) as the standard encryption method for recent Android devices. However, existing tools have been rendered ineffective. To close this gap, and to re-enable the forensic analysis of encrypted Android disks, given a raw memory image, we present a new key recovery method tailored for FBE. Furthermore, we extend The Sleuth Kit (TSK) to automatically decrypt file names and file contents when working on FBE-enabled EXT4 images, as well as the Plaso framework to extract events from encrypted EXT4 partitions. Last but not least, we argue that the recovery of master keys from FBE partitions was particularly easy due to a flaw in the key derivation method by Google.

In contrast to the common habit of taking full bitwise copies of storage devices before analysis, selective imaging promises to alleviate the problems created by the increasing capacity of storage devices. Imaging is selective if only selected data objects from an image that were explicitly chosen are included in the copied data. While selective imaging has been defined for post-mortem data acquisition, performing this process live, i.e., by using the system that contains the evidence also to execute the imaging software, is less well defined and understood. We present the design and implementation of a new live Selective Imaging Tool for Windows, called SIT, which is based on the DFIR ORC framework and uses AFF4 as a container format.

Photocatalytic disintegration is a novel approach to eliminate pollution. The method utilizes the semiconductor titanium dioxide to degrade organic molecules in the presence of ultraviolet (UV) light. In this study, it is shown how the capabilities of several types of catalyst designs degrade the non-polar substance diesel fuel and the polar substance methylene blue. The floating design of foam glass coated with titanium dioxide could reduce the concentration of diesel fuel by 329 mg/L in 16 h; the submerged designs for coated glass fiber and coated steel grit could reduce methylene blue concentration by 96.6% after 4 h and 99.1% after 6 h, respectively. It could be shown that photocatalysis is a promising cost- and energy-efficient method for managing air and water pollution. It can be established as a low-technology method without requiring the use of a conventional source of energy, given an adequate amount of sun hours, or as an additional cleaning stage in water treatment plants using UV-LEDs.

Distributed Hash Table (DHT) protocols, such as Kademlia, provide a decentralized key-value lookup which is nowadays integrated into a wide variety of applications, such as Ethereum, InterPlanetary File System (IPFS), and BitTorrent. However, many security issues in DHT protocols have not been solved yet. DHT networks are typically evaluated using mathematical models or simulations, often abstracting away from artefacts that can be relevant for security and/or performance. Experiments capturing these artefacts are typically run with too few nodes. In this paper, we provide Locust, a novel highly concurrent DHT experimentation framework written in Elixir, which is designed for security evaluations. This framework allows running experiments with a full DHT implementation and around 4,000 nodes on a single machine including an adjustable churn rate; thus yielding a favourable trade-off between the number of analysed nodes and being realistic. We evaluate our framework in terms of memory consumption, processing power, and network traffic.

During gasification and/or pyrolysis of wooden biomass, charcoal is formed as a solid intermediate or product. In CO2- and H2O-rich atmospheres at high temperatures, a high specific surface area of several 100 m2 per gram of charcoal may be reached. Common biomass gasifiers aim at a charcoal conversion of 100 %. Up to now, the option of a subsequent usage of the charcoal for adsorption of tar compounds has rarely been considered but is an interesting option to produce a clean syngas in a downstream adsorption unit. Experimental studies show an adsorption capacity of up to 0.4 g of tar per gram of charcoal using naphthalene as a model substance for tar. Respective adsorption isotherms, breakthrough curves in a fixed-bed adsorber, and a kinetic breakthrough model are presented.

Während wir hierzulande noch über die DSGVO, die ePrivacy-Verordnung und den Umgang mit Browsercookies diskutieren, erlangt die Datenökonomie andernorts, etwa in den USA oder China, eine völlig neue Qualität: die digitale Verwertung von Informationen aus unserer DNS.

Biolebensmittel einzukaufen gibt den Konsumenten ein gutes Gefühl. Es geht ihnen dabei um Aspekte wie Freiheit von Schadstoffen, Fairness gegenüber den Produzenten, Tierwohl und Umweltschutz. Solche Überlegungen stellen heute nicht mehr ausschließlich die bioaffinen Kernzielgruppen an, vielmehr sieht ein zunehmender Teil der Gesamtbevölkerung einen persönlichen Nutzen im Einkauf und im Konsum von Biolebensmitteln. Bioware ist in der Regel teurer als konventionelle Erzeugnisse. Viele Konsumenten sind bereit, höhere Preise zu akzeptieren, so lange sie darauf vertrauen können, dass bei der Erzeugung und beim Handel die versprochenen Standards tatsächlich eingehalten werden. Die vorliegende Studie stellt daher das Thema der Glaubwürdigkeit von Biohändlern und Biosiegeln in den Fokus. AccessMM hat dazu die Einschätzung von 1.027 erwachsenen Personen im Inland online abgefragt. In zahlreichen quantitativen und offenen Fragen wurde erhoben, was beim Bioeinkauf für wichtig gehalten wird, welche Vorteile die Bevölkerung sieht und welche Bedenken sie bewegen. Anhand ihrer Präferenzen werden die Konsumenten in sechs Typen von Biokunden eingeteilt.

Der Bericht untersucht die Folgen der Corona-Pandemie für die Unternehmen und fokussiert sich dabei insbesondere auf die Auswirkungen auf das Personalmanagement sowie die Arbeitsorganisation. An der Studie nahmen mehr als 50 Unternehmen verschiedener Branchen aus ganz Deutschland teil, so dass sich durch den breiten Querschnitt von Industrie und Handel ein aussagekräftiges Bild zeichnen lässt.

Die Kooperationsstudie wurde im Auftrag des Europäischen Management Instituts an der Hochschule Hof (emi e.V.) durchgeführt. Die Datenerhebung erfolgte durch Mitglieder der Forschungsgruppe ERUX des Instituts für Informationssysteme (iisys) an der Hochschule Hof, während unter der  Supervision von AccessMM die Daten ausgewertet wurden. Zudem unterstützte das Netzwerk Personet e.V., Bayreuth, die Kontaktaufnahme zu einigen ihrer Mitgliedsunternehmen sowie bei der Entwicklung des Erhebungsinstruments.

Virtual Private Network (VPN) protocols provide means for establishing secure inter-network links. However, they do not provide anonymity. VPN providers can monitor both ends of the connection. On the other hand, Onion Routing offers very good anonymity properties but offers significantly less throughput than typical VPN setups. An interesting compromise is using several VPN servers connected in series (cascading VPN). This paper evaluates the throughput of two VPN protocols, WireGuard and OpenVPN, in a cascading environment.