Proceedings of the 2nd International Workshop on Multimedia Privacy and Security最新文献

Proceedings of the 2nd International Workshop on Multimedia Privacy and Security 第二届多媒体隐私与安全国际研讨会论文集

Proceedings of the 2nd International Workshop on Multimedia Privacy and Security Pub Date : 2018-10-15 DOI: 10.1145/3267357

引用次数: 1

Towards Reactive Acoustic Jamming for Personal Voice Assistants 针对个人语音助手的被动声干扰研究

Proceedings of the 2nd International Workshop on Multimedia Privacy and Security Pub Date : 2018-01-15 DOI: 10.1145/3267357.3267359

Peng Cheng, I. E. Bagci, Jeff Yan, U. Roedig

{"title":"Towards Reactive Acoustic Jamming for Personal Voice Assistants","authors":"Peng Cheng, I. E. Bagci, Jeff Yan, U. Roedig","doi":"10.1145/3267357.3267359","DOIUrl":"https://doi.org/10.1145/3267357.3267359","url":null,"abstract":"Personal Voice Assistants (PVAs) such as the Amazon Echo are commonplace and it is now likely to always be in range of at least one PVA. Although the devices are very helpful they are also continuously monitoring conversations. When a PVA detects a wake word, the immediately following conversation is recorded and transported to a cloud system for further analysis. In this paper we investigate an active protection mechanism against PVAs: reactive jamming. A Protection Jamming Device (PJD) is employed to observe conversations. Upon detection of a PVA wake word the PJD emits an acoustic jamming signal. The PJD must detect the wake word faster than the PVA such that the jamming signal still prevents wake word detection by the PVA. The paper presents an evaluation of the effectiveness of different jamming signals. We quantify the impact of jamming signal and wake word overlap on jamming success. Furthermore, we quantify the jamming false positive rate in dependence of the overlap. Our evaluation shows that a 100% jamming success can be achieved with an overlap of at least 60% with a negligible false positive rate. Thus, reactive jamming of PVAs is feasible without creating a system perceived as a noise nuisance.","PeriodicalId":263315,"journal":{"name":"Proceedings of the 2nd International Workshop on Multimedia Privacy and Security","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129262370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Double Embedding Steganalysis: Steganalysis with Low False Positive Rate 双嵌入隐写分析:具有低假阳性率的隐写分析

Proceedings of the 2nd International Workshop on Multimedia Privacy and Security Pub Date : 2018-01-15 DOI: 10.1145/3267357.3267364

M. Steinebach, A. Ester, Huajian Liu, Sascha Zmuzinksi

引用次数: 2

Expiring Decisions for Stream-based Data Access in a Declarative Privacy Policy Framework 声明性隐私策略框架中基于流的数据访问的过期决策

Proceedings of the 2nd International Workshop on Multimedia Privacy and Security Pub Date : 2018-01-15 DOI: 10.1145/3267357.3267361

Karsten Martiny, G. Denker

引用次数: 1

FRiCS: A Framework for Risk-driven Cloud Selection FRiCS:风险驱动的云选择框架

Proceedings of the 2nd International Workshop on Multimedia Privacy and Security Pub Date : 2018-01-15 DOI: 10.1145/3267357.3267362

Patricia Arias Cabarcos, F. Almenárez, Daniel Díaz Sánchez, Andrés Marín López

{"title":"FRiCS: A Framework for Risk-driven Cloud Selection","authors":"Patricia Arias Cabarcos, F. Almenárez, Daniel Díaz Sánchez, Andrés Marín López","doi":"10.1145/3267357.3267362","DOIUrl":"https://doi.org/10.1145/3267357.3267362","url":null,"abstract":"Our devices and interactions in a world where physical and digital realities are more and more blended, generate a continuum of multimedia data that needs to be stored, shared and processed to provide services that enrich our daily lives. Cloud computing plays a key role in these tasks, dissolving resource allocation and computational boundaries, but it also requires advanced security mechanisms to protect the data and provide privacy guarantees. Therefore, security assurance must be evaluated before offloading tasks to a cloud provider, a process which is currently manual, complex and inadequate for dynamic scenarios. However, though there are many tools for evaluating cloud providers according to quality of service criteria, automated categorization and selection based on risk metrics is still challenging. To address this gap, we present FRiCS, a Framework for Risk-driven Cloud Selection, which contributes with: 1) a set of cloud security metrics and risk-based weighting policies, 2) distributed components for metric extraction and aggregation, and 3) decision-making plugins for ranking and selection. We have implemented the whole system and conducted a case-study validation based on public cloud providers' security data, showing the benefits of the proposed approach.","PeriodicalId":263315,"journal":{"name":"Proceedings of the 2nd International Workshop on Multimedia Privacy and Security","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124398401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Deriving Privacy and Security Considerations for CORE: An Indoor IoT Adaptive Context Environment 为核心提供隐私和安全考虑:室内物联网自适应上下文环境

Proceedings of the 2nd International Workshop on Multimedia Privacy and Security Pub Date : 2018-01-15 DOI: 10.1145/3267357.3267363

Alexis Morris, Nadine Lessio

引用次数: 8

ETERNAL: Encrypted Transmission With an Error-correcting, Real-time, Noise-resilient Apparatus on Lightweight Devices ETERNAL:轻量级设备上带有纠错、实时、抗噪声装置的加密传输

Proceedings of the 2nd International Workshop on Multimedia Privacy and Security Pub Date : 2018-01-15 DOI: 10.1145/3267357.3267360

Quinn Grier, B. Falk, Steve Lu, R. Ostrovsky

{"title":"ETERNAL: Encrypted Transmission With an Error-correcting, Real-time, Noise-resilient Apparatus on Lightweight Devices","authors":"Quinn Grier, B. Falk, Steve Lu, R. Ostrovsky","doi":"10.1145/3267357.3267360","DOIUrl":"https://doi.org/10.1145/3267357.3267360","url":null,"abstract":"In this work, we describe the design and implementation of a private-key voice encryption system that is designed to encrypt and decrypt voice communications between two people using lightweight computational devices (such as a Raspberry Pi) that sits between the headset and the communication platform (computer, phone, etc.). The key challenge in this work is designing lightweight encryption algorithms in such a way that even before voice enters the phone/computer platform, voice is encrypted, yet such that modern audio communication channels such as popular VoIP applications (such as Skype, Google Voice, etc.), or mobile communications (GSM, etc.) or other (Radio, etc.) do not filter encrypted voice out as \"noise\" and voice quality is preserved. Thus, two people with two such devices can communicate securely even if their smart phones and/or computers are compromised. Unlike previous solutions, our proposed work does not rely on special-purpose hardware, nor does it rely on trusting the communication device. It is a standalone solution that can be readily deployed on lightweight commodity hardware. We have tested our solution on two Raspberry Pi models and over a variety of communication channels, where we were able to carry a real-time voice conversation.","PeriodicalId":263315,"journal":{"name":"Proceedings of the 2nd International Workshop on Multimedia Privacy and Security","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132210962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Online Tracking of Kids and Teens by Means of Invisible Images: COPPA vs. GDPR 通过隐形图像对儿童和青少年进行在线跟踪:COPPA与GDPR

Proceedings of the 2nd International Workshop on Multimedia Privacy and Security Pub Date : 2018-01-15 DOI: 10.1145/3267357.3267370

N. Vlajic, Marmara El Masri, Gianluigi M. Riva, Marguerite Barry, Derek Doran

{"title":"Online Tracking of Kids and Teens by Means of Invisible Images: COPPA vs. GDPR","authors":"N. Vlajic, Marmara El Masri, Gianluigi M. Riva, Marguerite Barry, Derek Doran","doi":"10.1145/3267357.3267370","DOIUrl":"https://doi.org/10.1145/3267357.3267370","url":null,"abstract":"The recent news of a large-scale online tracking campaign involving Facebook users, which gave way to systematic misuse of the collected user-related data, have left millions of people deeply concerned about the state of their online privacy as well as the state of the overall information security in the cyber world. While most to-date revelations pertaining to user tracking are related to websites and social media generally intended for adult online users, relatively little is known about the prevalence of online tracking in websites geared towards children and teens. In this paper, we first provide a brief overview of two laws that seek to protect the privacy of kids and teens online ? the US Children's Online Privacy Act (COPPA) and the EU General Data Protection Regulation (GDPR). Subsequently, we present the results of our study which has looked for potential signs of user tracking in twenty select children-oriented websites in case of a user located in the USA (where COPPA is applicable) as well as a user located in the EU (where GDPR is applicable). The key findings of this study are alarming as they point to overwhelming evidence of widespread and highly covert user tracking in a range of different children-oriented websites. The majority of the discovered tracking is in direct conflict with both COPPA and GDPR, since it is performed without parental consent and by third-party advertising and tracking companies. The results also imply that, relative to their US counterparts, the children residing in the EU may be somewhat less subjected (but are still significantly exposed) to tracking by third-party companies.","PeriodicalId":263315,"journal":{"name":"Proceedings of the 2nd International Workshop on Multimedia Privacy and Security","volume":"183 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132283402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Mechanism and Implementation of Watermarked Sample Scanning Method for Speech Data Tampering Detection 语音数据篡改检测中水印样本扫描方法的机制与实现

Proceedings of the 2nd International Workshop on Multimedia Privacy and Security Pub Date : 2018-01-15 DOI: 10.1145/3267357.3267371

Xuping Huang

{"title":"Mechanism and Implementation of Watermarked Sample Scanning Method for Speech Data Tampering Detection","authors":"Xuping Huang","doi":"10.1145/3267357.3267371","DOIUrl":"https://doi.org/10.1145/3267357.3267371","url":null,"abstract":"The integrity and reliability of speech data have been important issues to probative use. Watermarking technologies supplies an alternative solution to guarantee the the authenticity of multiple data besides digital signature. This work proposes a novel digital watermarking based on a reversible compression algorithm with sample scanning to detect tampering in time domain. In order to detect tampering precisely, the digital speech data is divided into length-fixed frames and the content-based hash information of each frame is calculated and embedded into the speech data for verification. Huffman compression algorithm is applied to each four sampling bits from least significant bit in each sample after pulse-code modulation processing to achieve low distortion and high capacity for hiding payload. Experimental experiments on audio quality, detection precision and robustness towards attacks are taken, and the results show the effectiveness of tampering detection with a precision with an error around 0.032 s for a 10 s speech clip. Distortion is imperceptible with an average 22.068 dB for Huffman-based and 24.139 dB for intDCT-based method in terms of signal-to-noise, and with an average MOS 3.478 for Huffman-based and 4.378 for intDCT-based method. The bit error rate (BER) between stego data and attacked stego data in both of time-domain and frequency domain is approximate 28.6% in average, which indicates the robustness of the proposed hiding method.","PeriodicalId":263315,"journal":{"name":"Proceedings of the 2nd International Workshop on Multimedia Privacy and Security","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124328308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Session details: Internet of Things and Cloud-based Services 会议详情:物联网和云服务

Proceedings of the 2nd International Workshop on Multimedia Privacy and Security Pub Date : 2018-01-15 DOI: 10.1145/3285940

Roger A. Hallman

引用次数: 0