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David Wagner

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titleconferencedate
Runtime Permissions for Privacy in Proactive Intelligent AssistantsSOUPS 20222022-08-07
A simulated proactive assistant implemented via Wizard of Oz listens continuously and requests runtime permissions every time it would use heard content; 23…
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Detecting Credential Spearphishing in Enterprise Settings26th USENIX Security Symposium (USENIX Security '17)2017-08-16
A real-world deployment analyzes 372 million emails with five focused features: sender-login anomalies derived from LDAP (new IP geolocated city and prior city…
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Oscar: A Practical Page-Permissions-Based Scheme...26th USENIX Security Symposium (USENIX Security '17)2017-08-16
Oscar implements a page-permissions, virtual-alias scheme that enforces heap temporal safety and runs with no source code required. The system uses per-object…
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Hidden Voice CommandsUSENIX Security '162016-08-10
Researchers generate audio that humans hear as noise but voice systems transcribe as commands, producing both a white-box inversion that backsolves target text…
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