Abstract: A processing device comprises a processor coupled to a memory and is configured to obtain data characterizing host devices of a computer network of an enterprise. The data is applied to a logistic regression model to generate malware infection risk scores for respective ones of the host devices. The malware infection risk scores indicate likelihoods that the respective host devices will become infected with malware. The logistic regression model incorporates features of the host devices including at least user demographic features, virtual private network (VPN) activity features and web activity features of the host devices, and the data characterizing the host devices comprises data for the incorporated features. Proactive measures are taken to prevent malware infection in a subset of the host devices based at least in part on the malware infection risk scores. The processing device may be implemented in the computer network or an associated network security system.

Abstract: A digital broadcasting receiver includes an operating section configured to select a channel, and a video/audio data obtaining section configured to obtain video/audio data on a selected channel from television broadcasting signals. The digital broadcasting receiver also includes a channel table and a designated channel table. The digital broadcasting receiver further includes a channel selecting section configured such that when the channel is selected by the operating section, the channel selecting section determines whether or not the selected channel has been replaced with an alternative channel by a broadcasting station by reference to the two tables. If it is determined that the selected channel has been replaced with the alternative channel, the channel selecting section instructs the video/audio data obtaining section to select the alternative channel instead of the selected channel.