scholarly journals Understanding Screaming Channels: From a Detailed Analysis to Improved Attacks

Author(s):  
Giovanni Camurati ◽  
Aurélien Francillon ◽  
François-Xavier Standaert

Recently, some wireless devices have been found vulnerable to a novel class of side-channel attacks, called Screaming Channels. These leaks might appear if the sensitive leaks from the processor are unintentionally broadcast by a radio transmitter placed on the same chip. Previous work focuses on identifying the root causes, and on mounting an attack at a distance considerably larger than the one achievable with conventional electromagnetic side channels, which was demonstrated in the low-noise environment of an anechoic chamber. However, a detailed understanding of the leak, attacks that take full advantage of the novel vector, and security evaluations in more practical scenarios are still missing. In this paper, we conduct a thorough experimental analysis of the peculiar properties of Screaming Channels. For example, we learn about the coexistence of intended and unintended data, the role of distance and other parameters on the strength of the leak, the distortion of the leakmodel, and the portability of the profiles. With such insights, we build better attacks. We profile a device connected via cable with 10000·500 traces. Then, 5 months later, we attack a different instance at 15m in an office environment. We recover the AES-128 key with 5000·1000 traces and key enumeration up to 223. Leveraging spatial diversity, we mount some attacks in the presence of obstacles. As a first example of application to a real system, we show a proof-of-concept attack against the authentication method of Google Eddystone beacons. On the one side, this work lowers the bar for more realistic attacks, highlighting the importance of the novel attack vector. On the other side, it provides a broader security evaluation of the leaks, helping the defender and radio designers to evaluate risk, and the need of countermeasures.

2018 ◽  
Vol 12 (2) ◽  
pp. 260-278
Author(s):  
Christoph Demmerling

Abstract The following article argues that fictional texts can be distinguished from non-fictional texts in a prototypical way, even if the concept of the fictional cannot be defined in classical terms. In order to be able to characterize fictional texts, semantic, pragmatic, and reader-conditioned factors have to be taken into account. With reference to Frege, Searle, and Gabriel, the article recalls some proposals for how we might define fictional speech. Underscored in particular is the role of reception for the classification of a text as fictional. I make the case, from a philosophical perspective, for the view that fictional texts represent worlds that do not exist even though these worlds obviously can, and de facto do, contain many elements that are familiar to us from our world. I call these worlds reading worlds and explain the relationship between reading worlds and the life world of readers. This will help support the argument that the encounter with fictional literature can invoke real feelings and that such feelings are by no means irrational, as some defenders of the paradox of fiction would like us to believe. It is the exemplary character of fictional texts that enables us to make connections between the reading worlds and the life world. First and foremost, the article discusses the question of what it is that readers’ feelings are in fact related to. The widespread view that these feelings are primarily related to the characters or events represented in a text proves too simple and needs to be amended. Whoever is sad because of the fate of a fictive character imagines how he or she would fare if in a similar situation. He or she would feel sad as it relates to his or her own situation. And it is this feeling on behalf of one’s self that is the presupposition of sympathy for a fictive character. While reading, the feelings related to fictive characters and content are intertwined with the feelings related to one’s own personal concerns. The feelings one has on his or her own behalf belong to the feelings related to fictive characters; the former are the presupposition of the latter. If we look at the matter in this way, a new perspective opens up on the paradox of fiction. Generally speaking, the discussion surrounding the paradox of fiction is really about readers’ feelings as they relate to fictive persons or content. The question is then how it is possible to have them, since fictive persons and situations do not exist. If, however, the emotional relation to fictive characters and situations is conceived of as mediated by the feelings one has on one’s own behalf, the paradox loses its confusing effect since the imputation of existence no longer plays a central role. Instead, the conjecture that the events in a fictional story could have happened in one’s own life is important. The reader imagines that a story had or could have happened to him or herself. Readers are therefore often moved by a fictive event because they relate what happened in a story to themselves. They have understood the literary event as something that is humanly relevant in a general sense, and they see it as exemplary for human life as such. This is the decisive factor which gives rise to a connection between fiction and reality. The emotional relation to fictive characters happens on the basis of emotions that we would have for our own sake were we confronted with an occurrence like the one being narrated. What happens to the characters in a fictional text could also happen to readers. This is enough to stimulate corresponding feelings. We neither have to assume the existence of fictive characters nor do we have to suspend our knowledge about the fictive character of events or take part in a game of make-believe. But we do have to be able to regard the events in a fictional text as exemplary for human life. The representation of an occurrence in a novel exhibits a number of commonalities with the representation of something that could happen in the future. Consciousness of the future would seem to be a presupposition for developing feelings for something that is only represented. This requires the power of imagination. One has to be able to imagine what is happening to the characters involved in the occurrence being narrated in a fictional text, ›empathize‹ with them, and ultimately one has to be able to imagine that he or she could also be entangled in the same event and what it would be like. Without the use of these skills, it would remain a mystery how reading a fictional text can lead to feelings and how fictive occurrences can be related to reality. The fate of Anna Karenina can move us, we can sympathize with her, because reading the novel confronts us with possibilities that could affect our own lives. The imagination of such possibilities stimulates feelings that are related to us and to our lives. On that basis, we can participate in the fate of fictive characters without having to imagine that they really exist.


2020 ◽  
Vol 25 (3) ◽  
pp. 61-66
Author(s):  
Konstantin A. Ozherelyev
Keyword(s):  
New Age ◽  

The paper analyzes the key philosophical contexts and subtexts of M. Shelley’s most famous work “Frankenstein”. According to the author of the article, the philosophical layer of this Gothic novel consists of ideas and maxims that directly inherit the concepts of the worldview platforms of Plato, J.-J. Russo, G. W. F. Hegel, K. F. Volney, W. Godwin, M. Wollstonecraft, as well as the philosophy of the New Age and romanticism. An assumption is made, on the one hand, about the proximity of some worldview attitudes of these philosophers and the author of “Frankenstein” and, on the other hand, about the deliberate introduction of philosophical passages into the fabric of the novel, which play the role of retardation elements.


2020 ◽  
pp. 002198941990052
Author(s):  
Asha Jeffers

David Chariandy’s lauded 2007 debut novel Soucouyant explores the way that immigrants transmit lessons, beliefs, and ways of being to their children both intentionally and unintentionally, and the ways that these transmissions can contradict one another. This article argues that while much of the critical writing about Soucouyant has foregrounded the relationship between the unnamed narrator and his dementia-suffering mother, the text is just as concerned with exploring intragenerational relationships as it is with intergenerational ones. Indeed, the text demonstrates the interweaving of both intergenerational and intragenerational relationships in a unique and compelling way. The lessons that get passed on between the generations shape the lives and interactions of second generation subjects between themselves. In particular, the relationship between the narrator and Meera, the mysterious woman who has moved in with and is taking care of his mother when he returns to her home after deserting her for several years, poses the question of how these two second generation subjects of differing class backgrounds might reconcile themselves with both their parents’ Caribbean pasts, their own Canadian presents, and uncertain futures. The novel’s subtitle, “a novel of forgetting,” signals the central role of memory and forgetting play in the novel. The immigrant parents’ desire and attempts to forget the past are not wholly successful and their second generation children are forced to first remember before they can move forward without being haunted by the traumas, silences, and anxieties of their parents. The complex racial and class politics of Trinidad and Canada lead to the narrator and Meera receiving very different legacies from their parents. However, their eventual coming together, in all its difficulty, suggests that there is hope for second generation subjects who wish to choose a different path than the one set for them by either their parents or the nation-state.


2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Sofia Stefanopoulou ◽  
◽  
Christos-Thomas Kechagias ◽  
Konstantinos D. Malafantis ◽  
◽  
...  

Dystopian fiction is evolving in one of the most interesting literary genres for youth. Education in “Divergent” constitutes a domain of the society which affects directly the citizens and turns to be a catalyst for the establishment of the regime. This article focuses on the role and aspects of education and portrays some representations of the educational system in force in “Divergent”, making possible associations with our social and educational worlds. Using the method of quantitative content analysis, we found that “ranking” and “training” have the most powerful presence in the novel. In this dystopian society, the concept and institution of education has a very different role of the one we would imagine in another more friendly and warless society. Based on our findings, we propose ways in which students can actually learn from dystopian fiction and make steps towards the change of their own educational system and society.


The article analyzes the novel by I. Franco “William Tell” through the prism of musical code and musical ecfrasis. So far, none of the French scholars has paid attention to the plot-forming role of the Rossini’s opera in the short story, but in the first part of the four-part short story the young couple is going to the opera, in the following parts Franco gradually reveals the heroine’s perception of the overture to the opera, and then its individual scenes. After the end of the opera, Olya novelistically unexpectedly, on the external-eventual plane of the novel, declares that she is not in love with Volodko, but on the internal, spiritual and psychological - thanks to the verbal description of the music and its perception by the heroes - this becomes natural. With the help of musical ecfrasis, the depth of Olya’s impression of the Rossini’s opera and the heroine’s psychological sensitivity to what she heard become clear. Moreover, Franco finds his “niche” in the image of the heroine's understanding of opera music: while foreign writers of the mid-19th century most often describe the feelings and emotions that heroes evoke in music, Franco, relying on picture programmability (landscapes of his native land and ideal representations of the heroine about family happiness), which Olya accompanies the heard music, reveals the rich inner world of the girl and her ideals. Rossini’s romantic heroic-patriotic opera “Wilhelm Tell”, her musical images and stage performance become a litmus test in the novel: the relationship of the characters to the opera performance, impressions of it become an important way of revealing their characters. Volodka’s superficial attitude to music as entertainment, on the one hand, and Olya’s ability under the influence of music to see the true meaning of life, correcting her worldview from pastorally romantic to heroic-romantic, on the other hand, make it possible to understand the different life positions of the heroes - the intellectual adaptive Volodka’s service to the people of Olya, and, in fact, the ideological and artistic concept of the writer himself.


2021 ◽  
Vol 31 (1) ◽  
pp. 104-121
Author(s):  
Janina Jacke

Abstract In diesem Artikel wird der funktionale Aspekt unzuverlässigen Erzählens aus theoretischer und methodologischer Perspektive untersucht. Dabei geht es zum einen darum, die Rolle der Funktion im Rahmen der Definition zu analysieren und die Herausforderungen sowie die Vor- und Nachteile einer funktionalistischen Definition zu erörtern. Zum anderen wird die Rolle der Funktion im Kontext der Diagnose unzuverlässigen Erzählens untersucht, wobei die Relation zwischen (expliziten) Textmerkmalen, Funktion und Werkbedeutung im Rahmen einer exemplarischen Analyse des Romans Zornfried von Jörg-Uwe Albig im Fokus steht.This article examines the functional aspect of unreliable narration from a theoretical and methodological perspective. This includes, on the one hand, a discussion of the role of functions in the Definition of unreliability which addresses the challenges as well as the advantages and disadvantages of a functionalist definition. On the other hand, the role of function in the context of the diagnosis/attribution of unreliable narration is subject to analysis. Here, the relation between (explicit) textual features, function, and work meaning is the focus of an exemplary analysis of the novel Zornfried by Jörg-Uwe Albig.


2012 ◽  
Vol 35 (6) ◽  
pp. 378
Author(s):  
Morley D Hollenberg

The essential role of proteinases as regulatory digestive enzymes, recognized since the late 1800s, has been underscored by the discovery that more than 2% of the genome codes for proteinases and their inhibitors. Further, by the early 1970s it was appreciated that in addition to their digestive actions, proteinases can affect cell function: (1) by the generation or degradation of peptide hormones and (2) by the direct regulation of signalling by receptors like the one for insulin. It was the discovery in the 1990s of the novel G-protein-coupled ‘proteinase-activated receptor’ (PAR) family that has caused a paradigm shift in the understanding of the way that proteinases can regulate cell signalling. This overview provides a perspective for the discovery of the PARs and my laboratory’s role in (1) understanding the molecular pharmacology of these fascinating receptors and (2) identifying the potential pathophysiological roles that the PAR family can play in inflammatory disease. In this context, the overview also portrays the essential impact that seemingly minor comments/insights provided by my lifelong mentors have had on kindling my intense interest in proteinase-mediated signalling. The ‘butterfly effect’ of those comments has led to an unexpectedly large impact on my own research directions. Hopefully my own ‘butterfly comments’ will also be heard by my trainees and other colleagues with whom I am currently working and will promote future discoveries that will be directly relevant to the treatment of inflammatory disease.


2020 ◽  
Vol 12 (2) ◽  
pp. 144-152
Author(s):  
Natalia Zubets

The scientific research was realised on the basis of the existential and psychological novel of V. Domontovych «Doctor Seraphicus». The compositional structure of the literary text was examined by marking the distinction of main types of a speech – the one of the author and the one of the character. It is emphasized that the author’s point of view is most complete and explicitly manifested in the author’s proper speech, which plays a leading role in the formation of the concept of a work, characterized by evaluativity and modality. The principal approaches to the definition of the notion «author’s speech» from the perspective of psychology and linguistics were named. Since the complex functional textual speech unities – descriptions, narrations, reflections structure the author’s opinion, regulate its development and ensure its integrity and completeness, then, the role of each compositional speech form in interpreting the novel’s idea was established and revealed (presentation of the macrocosm and the microcosm of a man, transfer of the temporal sequence and conditionality, reflection of the author’s world perception). The special attention was paid to the form of reflection as a generalized representation of the author’s point of view which is universal and autonomous. The lexical-semantic, structural-syntactic and functional-stylistic features of compositional speech forms are analyzed in this work.


2017 ◽  
Vol 12 (3) ◽  
pp. 883
Author(s):  
Biljana Vlašković Ilić

Yann Martel’s novel Life of Pi, the winner of numerous prestigious awards, was described as“very bold and extreme with a wonderful central idea” (Irish Examiner 2002). The “central idea” of the novel has been described differently by readers and literary critics around the world. For many, it is Pi’s relationship with the tiger, Richard Parker; for some, it is the decentering of humans in favour of animals; and yet for others, the central idea of Life of Pi lies in Martel’s unusual treatment of religions and their role in human life. In this paper we argue that that the main idea of the novel is Martel’s ecocriticism of humanity in general, and especially the tendency of humans to put themselves at the center of any story, whether about animals or gods. Martel creates a tangled web of many different stories which define Pi’s life in order to prioritize the role of fiction in the development of human personality and dissect the relations between the human, the natural world, and the text. Although he favors the animal story, the final chapter reveals that the only story humans find “real” is the one in which animals are seen as anthropomorphic.


Cells ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 3209
Author(s):  
Kui Miao Deng ◽  
Xiang Sheng Yang ◽  
Qun Luo ◽  
Yi Xin She ◽  
Qing Yang Yu ◽  
...  

Idiopathic pulmonary fibrosis (IPF) is a progressive and fatal lung disease of unknown etiology. Immune disorders play an important role in IPF pathogenesis. Here, we show that Th9 cells differentiate and activate in the lung tissue of patients with IPF and bleomycin (BLM)-induced lung fibrosis mice. Moreover, we found that Th9 cells promote pulmonary fibrosis in two ways. On the one hand, Th9 cells promote fibroblast differentiation, activation, and collagen secretion by secreting IL-9. On the other hand, they promote differentiation of Th0 cells into Th2 cells by secreting IL-4. Th9 cells and Th2 cells can promote each other, accelerating the Th1/Th2 imbalance and eventually forming a positive feedback of pulmonary fibrosis. In addition, we found that neutralizing IL-9 in both preventive and therapeutic settings ameliorates bleomycin-induced pulmonary fibrosis. Furthermore, we identified several critical signaling pathways involved in the effect of neutralizing IL-9 on pulmonary fibrosis by proteomics study. From an immunological perspective, we elucidated the novel role and underlying mechanism of Th9 cells in pulmonary fibrosis. Our study suggested that Th9-based immunotherapy may be employed as a treatment strategy for IPF.


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