Development and Evaluation of an Anti-Phishing Shooting Game

Phishing attacks continue to pose a great threat to citizens and companies. This paper introduces a newly developed anti-phishing shooting game and describes the design and results of an evaluation study. The conclusion of the study is that the game can be an engaging measure to raise awareness among Internet users regarding phishing messages and to support users in recognizing such messages

The Phishing Master Anti-Phishing Game

Games are one type of measure developed to raise security awareness. We present the design of a anti-phishing game for public events or for public spaces. We collected feedback on the game and got an impression of individuals\u27 interaction with the game, through a small user study with a convenience sample at a public event. Participants left overall positive feedback on the game. Our anti-phishing game seems to be a good alternative to classical anti-phishing measures -- in particular for public security awareness events. However, further work is required to integrate the received feedback and then evaluate the game in a controlled study

Age- and gender-related normal left ventricular deformation assessed by cardiovascular magnetic resonance feature tracking

Background: Assessment of left (LV) ventricular function is one of the most important tasks of cardiovascular magnetic resonance (CMR). Impairment of LV deformation is a strong predictor of cardiovascular outcome in various cardiac diseases like ischemic heart disease or cardiomyopathies. The aim of the study was to provide reference values for myocardial deformation derived from the CMR feature tracking imaging (FTI) algorithm in a reference population of healthy volunteers. Methods: FTI was applied to standard short axis and 2-, 3- and 4-chamber views of vector-ECG gated CMR cine SSFP sequences of 150 strictly selected healthy volunteers (75 male/female) of three age tertiles (mean age 45.8yrs). Global peak and mean radial, circumferential and longitudinal endo- and myocardial systolic strain values as well as early diastolic strain rates were measured using FTI within a standard protocol on a 1.5T whole body MR scanner. Results: Global peak systolic values were 36.3 ± 8.7% for radial, −27.2 ± 4.0% for endocardial circumferential, −21.3 ± 3.3% for myocardial circumferential, −23.4 ± 3.4% for endocardial longitudinal and −21.6 ± 3.2% for myocardial longitudinal strain. Global peak values were -2.1 ± 0.5s−1 for radial, 2.1 ± 0.6s−1 for circumferential endocardial, 1.7 ± 0.5s−1 for circumferential myocardial, 1.8 (1.5-2.2)s−1 for longitudinal endocardial, 1.6 (1.4-2.0)s−1 for longitudinal myocardial early diastolic strain rates. Men showed a higher radial strain than women whereas the circumferential and longitudinal strains were lower resulting in less negative values. Circumferential and longitudinal strain rates were significantly higher in female subjects. Radial strain increased significantly with age whereas the diastolic function measured by the radial, circumferential and longitudinal strain rates showed a decrease. The coefficients of variation determined in ten further subjects, who underwent two CMR examinations within 12 days, were −4.8% for circumferential and −4.5% for longitudinal endocardial mean strains. Conclusions: Myocardial deformation analysis using FTI is a novel technique and robust when applied to standard cine CMR images providing the possibility of a reliable, objective quantification of global LV deformation. Since strain values and strain rates differed partly between genders as well as between age groups, the application of specific reference values as provided by this study is recommendable

PassGlobe: Ein Shoulder-Surfing resistentes Authentifizierungsverfahren für Virtual Reality Head-Mounted Displays

Mit Virtual Reality (VR) kann in virtuelle Welten eingetaucht und mit einer immersiven 3-D Umgebung interagiert werden. Das virtuelle Erlebnis wird dabei durch Head-Mounted Displays (HMDs) realisiert. Der zunehmende Einsatz von VR durch Unternehmen und Privatpersonen in unterschiedlichen Bereichen setzt sichere und nutzerfreundliche Authentifizierungsverfahren voraus. Dabei ist die Gefahr von Shoulder-Surfing Angriffen während der Authentifizierung besonders groß, da man während des VR-Erlebnisses von der realen Umgebung komplett isoliert ist. In dieser Arbeit wird existierende Literatur zu VR-Authentifizierung anhand vorher definierter Anforderungen evaluiert und das graphische Authentifizierungsverfahren PassGlobe vorgeschlagen, welches resistent gegenüber Shoulder-Surfing Angriffen ist