95 research outputs found
TickTock: Detecting Microphone Status in Laptops Leveraging Electromagnetic Leakage of Clock Signals
We are witnessing a heightened surge in remote privacy attacks on laptop
computers. These attacks often exploit malware to remotely gain access to
webcams and microphones in order to spy on the victim users. While webcam
attacks are somewhat defended with widely available commercial webcam privacy
covers, unfortunately, there are no adequate solutions to thwart the attacks on
mics despite recent industry efforts. As a first step towards defending against
such attacks on laptop mics, we propose TickTock, a novel mic on/off status
detection system. To achieve this, TickTock externally probes the
electromagnetic (EM) emanations that stem from the connectors and cables of the
laptop circuitry carrying mic clock signals. This is possible because the mic
clock signals are only input during the mic recording state, causing resulting
emanations. We design and implement a proof-of-concept system to demonstrate
TickTock's feasibility. Furthermore, we comprehensively evaluate TickTock on a
total of 30 popular laptops executing a variety of applications to successfully
detect mic status in 27 laptops. Of these, TickTock consistently identifies mic
recording with high true positive and negative rates.Comment: 18 pages, 27 figures, ACM CCS'22 conferenc
Game Action Based Power Management for Multiplayer Online Game
Current mobile devices embrace a wide range of functionalities including high speed network support, hardware accelerated 3D graphics, and multimedia capabilities. These capabilities have boosted the interest for enabling multiplayer online games (MOG) support on such devices. However, the lack of similar growth in battery technology limits the usability of these devices for MOGs. In this paper, we present energy conservation techniques for highly interactive MOGs. These are games, such as firstperson shooters, where crisp user interaction is paramount to the overall game experience. Hence, conserving energy while preserving crisp user interaction becomes a critical consideration in this domain. We first present three obvious power management approaches and highlight their limitations. We then discuss two applicationassisted approaches for power management that manage to save power while preserving the required user experience. Our results demonstrate that these applicationassisted approaches are very promising
PGTP: Power aware game transport protocol for multi-player mobile games
Ministry of Education, Singapore under its Academic Research Funding Tier
Dynamic lookahead mechanism for conserving power in multi-player mobile games
Ministry of Education, Singapore under its Academic Research Funding Tier
Adaptive display power management for mobile games
Ministry of Education, Singapore under its Academic Research Funding Tier
ARIVU: Power-Aware Middleware for Multiplayer Mobile Games
Ministry of Education, Singapore under its Academic Research Funding Tier
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