Proceso para la identificación, clasificación y control del comportamiento de familias Ransomware

Since May 2017, where different ransomware attacks were registered worldwide that affected several companies in Europe due to the WannaCry, there has been a progressive increase between 2018 and 2019 of computer attacks that encrypt and hijack data, and then request a ransom from cyber criminals. This article contains an analysis of the different methods to detect and prevent ransomware-type malware, which mainly affects the Windows operating system. For this, it began with a characterization of the different types of ransonware, several methods were obtained for the detection and prevention of possible infections and finally families of controls were created according to the behavior of the malware, these controls allow reducing the risks of exposure, generating with this, the pertinent recommendations that can be applied in organizations. In that sense, an introduction to the concepts of malware and its life cycle is provided, in the same way, an impact measurement process is established based on the international CVSS methodology for the classification of vulnerabilities. A methodology is created that allows the classification of malware according to its damage level, medium and high impact filters were characterized, prevention and control methods were characterized, control recommendations based on the impact of different types of malware were generated, and finally the conclusions were presented.Desde mayo del 2017, en donde se registraron diferentes ataques de Ransomware a escala mundial que afectaron a varias empresas de Europa a causa del WannaCry, ha habido un aumento progresivo entre los años 2018 y 2019 de ataques informáticos que cifran y secuestran los datos, para luego solicitar un rescate por parte de los ciberdelincuentes. Este articulo contiene un análisis de los diferentes métodos para la detección y prevención de malware tipo Ransomware, que afectan principalmente al sistema operativo Windows. Para esto se inició con una caracterización de los diferentes tipos de ransonware, se obtuvieron diversos métodos para la detección y prevención de posibles infecciones y finalmente se crearon familias de controles de acuerdo con el comportamiento del malware, estos controles permiten la reducción de los riesgos de exposición, generando con ello, las recomendaciones pertinentes que pueden ser aplicadas en las organizaciones. En ese sentido, se entrega una introducción alrededor de los conceptos de malware y su ciclo de vida, así mismo, se establece un proceso de medición del impacto con base en la metodología internacional CVSS para la clasificación de las vulnerabilidades, se crea una metodología que permite la clasificación de malware de acuerdo a su nivel de daño, filtrando aquellas con impacto medio y alto, se caracterizaron los métodos de prevención y control, se generaron recomendaciones de controles con base en el impacto de los diferentes tipos de malware y finalmente se entregan las conclusiones

Discutindo a educação ambiental no cotidiano escolar: desenvolvimento de projetos na escola formação inicial e continuada de professores

A presente pesquisa buscou discutir como a Educação Ambiental (EA) vem sendo trabalhada, no Ensino Fundamental e como os docentes desta escola compreendem e vem inserindo a EA no cotidiano escolar., em uma escola estadual do município de Tangará da Serra/MT, Brasil. Para tanto, realizou-se entrevistas com os professores que fazem parte de um projeto interdisciplinar de EA na escola pesquisada. Verificou-se que o projeto da escola não vem conseguindo alcançar os objetivos propostos por: desconhecimento do mesmo, pelos professores; formação deficiente dos professores, não entendimento da EA como processo de ensino-aprendizagem, falta de recursos didáticos, planejamento inadequado das atividades. A partir dessa constatação, procurou-se debater a impossibilidade de tratar do tema fora do trabalho interdisciplinar, bem como, e principalmente, a importância de um estudo mais aprofundado de EA, vinculando teoria e prática, tanto na formação docente, como em projetos escolares, a fim de fugir do tradicional vínculo “EA e ecologia, lixo e horta”.Facultad de Humanidades y Ciencias de la Educació

CHLSOC: The Chilean Soil Organic Carbon database, a multi-institutional collaborative effort

One of the critical aspects in modelling soil organic carbon (SOC) predictions is the lack of access to soil information which is usually concentrated in regions of high agricultural interest. In Chile, most soil and SOC data to date is highly concentrated in 25 % of the territory that has intensive agricultural or forestry use. Vast areas beyond those forms of land use have few or no soil data available. Here, we present a new database of SOC for the country, which is the result of an unprecedented national effort under the frame of the Global Soil Partnership that help to build the largest database on SOC to date in Chile named “CHLSOC" comprising 13,612 data points. This dataset is the product of the compilation from numerous sources including unpublished and difficult to access data, allowing to fill numerous spatial gaps where no SOC estimates were publicly available before. The values of SOC compiled in CHLSOC range from 6×10−5 to 83.3 percent, reflecting the variety of ecosystems that exists in Chile. Profiting from the richness of geochemical, topographic and climatic variability in Chile, the dataset has the potential to inform and test models trying to predict SOC stocks and dynamics at larger spatial scales.ISSN:1866-359

Search for narrow resonances using the dijet mass spectrum in pp collisions at s√=8 TeV

Results are presented of a search for the production of new particles decaying to pairs of partons (quarks, antiquarks, or gluons), in the dijet mass spectrum in proton-proton collisions at s√=8  TeV. The data sample corresponds to an integrated luminosity of 4.0  fb−1, collected with the CMS detector at the LHC in 2012. No significant evidence for narrow resonance production is observed. Upper limits are set at the 95% confidence level on the production cross section of hypothetical new particles decaying to quark-quark, quark-gluon, or gluon-gluon final states. These limits are then translated into lower limits on the masses of new resonances in specific scenarios of physics beyond the standard model. The limits reach up to 4.8 TeV, depending on the model, and extend previous exclusions from similar searches performed at lower collision energies. For the first time mass limits are set for the Randall–Sundrum graviton model in the dijet channel

Search for heavy resonances in the W/Z-tagged dijet mass spectrum in pp collisions at 7 TeV

A search has been made for massive resonances decaying into a quark and a vector boson, qW or qZ, or a pair of vector bosons, WW, WZ, or ZZ, where each vector boson decays to hadronic final states. This search is based on a data sample corresponding to an integrated luminosity of 5.0 fb 121 of proton\u2013proton collisions collected in the CMS experiment at the LHC in 2011 at a center-of-mass energy of 7 TeV. For sufficiently heavy resonances the decay products of each vector boson are merged into a single jet, and the event effectively has a dijet topology. The background from QCD dijet events is reduced using recently developed techniques that resolve jet substructure. A 95% CL lower limit is set on the mass of excited quark resonances decaying into qW (qZ) at 2.38 TeV (2.15 TeV) and upper limits are set on the cross section for resonances decaying to qW, qZ, WW, WZ, or ZZ final states