Typing a Terrorist Attack: Using Tools from the War on Terror to Fight the War on Ransomware

The United States faces a grave challenge in its fight against cyberattacks from abroad. Chief among the foreign cyber threats comes from a finite number of “ransomware-as-a-service” gangs, which are responsible for extorting billions of dollars from American citizens and companies annually. Prosecuting these cybercriminals has proven exceedingly difficult. Law enforcement often struggles to forensically trace ransomware attacks, which makes identifying and prosecuting the perpetrators challenging. Moreover, even when prosecutors can identify the perpetrators of these attacks, the ransomware gangs are headquartered in foreign adversarial nations that do not extradite criminals to the United States. Finally, ransomware gangs are governed by complex structures that push the limits of joint criminal enterprise liability. While these challenges are complex, they are not unprecedented. The United States has crafted successful legal solutions in response to similar challenges in its fight against the War on Terror. This Comment analyzes one of these legal solutions from the War on Terror, 8 U.S.C. § 1189, which establishes the Foreign Terrorist Organization list and assesses whether the State Department can and should designate foreign ransomware gangs as “Foreign Terrorist Organizations” (FTOs). This Comment argues that ransomware gangs qualify as “foreign organizations,” engage in “terrorist activities” as defined under the statute, and threaten the national security of the United States. Thus, ransomware gangs meet the statutory requirements for designation as FTOs. Given the prosecutorial and investigatory benefits and the useful financial and political implications of the designation, this Comment argues that the State Department should list ransomware gangs as FTOs

DNA double helices for single molecule electronics

The combination of self-assembly and electronic properties as well as its true nanoscale dimensions make DNA a promising candidate for a building block of single molecule electronics. We argue that the intrinsic double helix conformation of the DNA strands provides a possibility to drive the electric current through the DNA by the perpendicular electric (gating) field. The transistor effect in the poly(G)-poly(C) synthetic DNA is demonstrated within a simple model approach. We put forward experimental setups to observe the predicted effect and discuss possible device applications of DNA. In particular, we propose a design of the single molecule analog of the Esaki diode.Comment: 4 pages, 4 figur

Las noticias extranjeras en la televisión pública y privada de Chile comparada con la de catorce países.

Este trabajo analiza el impacto de las noticias extranjeras en dos noticiarios de televisión chilenos, en el marco del proyecto Foreign TV News Around the World. Todas las noticias emitidas son clasificadas en cuatro categorías, según lugar de ocurrencia e involucramiento nacional o extranjero. El espacio que se destina a cada una de ellas, así como los temas más habituales, son comparados según dos modelos televisivos: el de servicio público y el comercial. En definitiva se observa que, en Chile y en el resto de los países analizados, la tendencia es que las diferencias esperadas entre ambos tipos ideales son comparativamente menores

Application of Functional Theory of Political Discourse in Chilean presidential debates to determine the influence of journalists in the contents

Within the growing academic interest over electoral debates, the role of the journalists who conduct the debates in determining the tenor of the answers has not been sufficiently studied. We used Chile as an extreme case, given the predominant role that the debate moderators receive here, thanks to the “journalistic panel” format utilized in them, where they take turns to interview the candidates. As a framework to describe these contents, we used Functional Theory of Political Discourse by William Benoit. Our data show that, indeed, the candidates use different combinations of said functions, depending on the different frameworks established by the rules for each debate. Clearly, the candidates tend to defend themselves from the attacks of the journalists, rather than their rivals’; and they use other strategies when the rules allow them more freedom

Dissipative Effects in the Electronic Transport through DNA Molecular Wires

We investigate the influence of a dissipative environment which effectively comprises the effects of counterions and hydration shells, on the transport properties of short \DNA wires. Their electronic structure is captured by a tight-binding model which is embedded in a bath consisting of a collection of harmonic oscillators. Without coupling to the bath a temperature independent gap opens in the electronic spectrum. Upon allowing for electron-bath interaction the gap becomes temperature dependent. It increases with temperature in the weak-coupling limit to the bath degrees of freedom. In the strong-coupling regime a bath-induced {\it pseudo-gap} is formed. As a result, a crossover from tunneling to activated behavior in the low-voltage region of the $I$-$V$ characteristics is observed with increasing temperature. The temperature dependence of the transmission near the Fermi energy, $t(E_{\rm F})$, manifests an Arrhenius-like behavior in agreement with recent transport experiments. Moreover, $t(E_{\rm F})$ shows a weak exponential dependence on the wire length, typical of strong incoherent transport. Disorder effects smear the electronic bands, but do not appreciably affect the pseudo-gap formation

Quantum transport through a DNA wire in a dissipative environment

Electronic transport through DNA wires in the presence of a strong dissipative environment is investigated. We show that new bath-induced electronic states are formed within the bandgap. These states show up in the linear conductance spectrum as a temperature dependent background and lead to a crossover from tunneling to thermal activated behavior with increasing temperature. Depending on the strength of the electron-bath coupling, the conductance at the Fermi level can show a weak exponential or even an algebraic length dependence. Our results suggest a new environmental-induced transport mechanism. This might be relevant for the understanding of molecular conduction experiments in liquid solution, like those recently performed on poly(GC) oligomers in a water buffer (B. Xu et al., Nano Lett 4, 1105 (2004)).Comment: 5 pages, 3 figure

Rate-equation calculations of the current flow through two-site molecular device and DNA-based junction

Here we present the calculations of incoherent current flowing through the two-site molecular device as well as the DNA-based junction within the rate-equation approach. Few interesting phenomena are discussed in detail. Structural asymmetry of two-site molecule results in rectification effect, which can be neutralized by asymmetric voltage drop at the molecule-metal contacts due to coupling asymmetry. The results received for poly(dG)-poly(dC) DNA molecule reveal the coupling- and temperature-independent saturation effect of the current at high voltages, where for short chains we establish the inverse square distance dependence. Besides, we document the shift of the conductance peak in the direction to higher voltages due to the temperature decrease.Comment: 12 pages, 6 figure

Risk factors for cesarean delivery following labor induction in multiparous women

Objective. To identify potential risk factors for cesarean delivery following labor induction in multiparous women at term. Methods. We conducted a retrospective case-control study. Cases were parous women in whom the induction of labor had resulted in a cesarean delivery. For each case, we used the data of two successful inductions as controls. Successful induction was defined as a vaginal delivery after the induction of labor. The study was limited to term singleton pregnancies with a child in cephalic position. Results. Between 1995 and 2010, labor was induced in 2548 parous women, of whom 80 had a cesarean delivery (3%). These 80 cases were compared to the data of 160 parous women with a successful induction of labor. In the multivariate analysis history of preterm delivery (odds ratio (OR) 5.3 (95% CI 1.1 to 25)), maternal height (OR 0.87 (95% CI 0.80 to 0.95)) and dilatation at the start of induction (OR 0.43 (95% CI 0.19 to 0.98)) were associated with failed induction. Conclusion. In multiparous women, the risk of cesarean delivery following labor induction increases with previous preterm delivery, short maternal height, and limited dilatation at the start of induction.Corine J. Verhoeven, Cedric T. van Uytrecht, Martina M. Porath, and Ben Willem J. Mo

Electrical transport through single-molecule junctions: from molecular orbitals to conduction channels

We present an atomistic theory of electronic transport through single organic molecules that reproduces the important features of the current-voltage characteristics observed in recent experiments. We trace these features to their origin in the electronic structure of the molecules and their local atomic environment. We demonstrate how conduction channels arise from the molecular orbitals and elucidate which specific properties of the individual orbitals determine their contribution to the current.Comment: Revtex4, 4 pages, 4 figures. Version with color figures in http://www-tfp.physik.uni-karlsruhe.de/~cuevas/Publications.htm

Fullerene-based molecular nanobridges: A first-principles study

Building upon traditional quantum chemistry calculations, we have implemented an {\em ab-initio} method to study the electrical transport in nanocontacts. We illustrate our technique calculating the conductance of C$_{60}$ molecules connected in various ways to Al electrodes characterized at the atomic level. Central to a correct estimate of the electrical current is a precise knowledge of the local charge transfer between molecule and metal which, in turn, guarantees the correct positioning of the Fermi level with respect to the molecular orbitals. Contrary to our expectations, ballistic transport seems to occur in this system.Comment: 4 pages in two-column forma