Visible to the public LuxLeak: Capturing Computing Activity Using Smart Device Ambient Light Sensors

TitleLuxLeak: Capturing Computing Activity Using Smart Device Ambient Light Sensors
Publication TypeConference Paper
Year of Publication2016
AuthorsHolmes, Ashton, Desai, Sunny, Nahapetian, Ani
Conference NameProceedings of the 2Nd Workshop on Experiences in the Design and Implementation of Smart Objects
PublisherACM
Conference LocationNew York, NY, USA
ISBN Number978-1-4503-4254-4
Keywordsambient light sensor, eavesdropping, Human Behavior, keystroke analysis, lux, Metrics, mobile malware, mobile security, privacy, pubcrawl, screen emanations, side-channel analysis, smart phone, smart watch, wearable computing
Abstract

In this paper, we consider side-channel mechanisms, specifically using smart device ambient light sensors, to capture information about user computing activity. We distinguish keyboard keystrokes using only the ambient light sensor readings from a smart watch worn on the user's non-dominant hand. Additionally, we investigate the feasibility of capturing screen emanations for determining user browser usage patterns. The experimental results expose privacy and security risks, as well as the potential for new mobile user interfaces and applications.

URLhttp://doi.acm.org/10.1145/2980147.2980150
DOI10.1145/2980147.2980150
Citation Keyholmes_luxleak:_2016