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Provable Ownership of Encrypted Files in De-Duplication Cloud Storage
1 Provable Ownership of Encrypted Files in De-duplication Cloud Storage Chao Yangy z, Jianfeng May and Jian Renz ySchool of CS, Xidian University Xi’an, Shaanxi, 710071. Email: fchaoyang, [email protected] zDepartment of ECE, Michigan State University East Lansing, MI 48824. Email: fchaoyang, [email protected] Abstract—The rapid adoption of cloud storage services has tells a client that it does not have to upload the file, it created an issue that many duplicated copies of files are stored in means that some other clients have the same file, which the remote storage servers, which not only wastes the communica- could be a sensitive information [5]. More seriously, Halevi tion bandwidth for duplicated file uploading, but also increases the cost of security data management. To solve this problem, et al. recently found some new attacks to the client-side client-side deduplication was introduced to avoid the client from deduplication system [6]. In these attacks, by learning just uploading files already existed in the remote servers. However, the a small piece of information about the file, namely its hash existing scheme was recently found to be vulnerable to security value, an attacker is able to get the entire file from the server. attacks in that by learning a small piece of information related These attacks are not just theoretical. Some similar attacks to the file, such as the hash value of the file, the attacker may be able to get full access of the entire file; and the confidentiality that were implemented against Dropbox were also discovered of the date may be vulnerable to “honest-but-curious” attacks. -
A Backup-As-A-Service (Baas) Software Solution
Universidade de Brasília Institute of Exact Sciences Department of Computer Science A Backup-as-a-Service (BaaS) Software Solution Heitor M. de Faria Dissertation presented as partial requirement for conclusion on the Professional Master in Applied Computing Advisor Prof. Dra. Priscila Solis Brasília 2018 Universidade de Brasília Institute of Exact Sciences Department of Computer Science A Backup-as-a-Service (BaaS) Software Solution Heitor M. de Faria Dissertation resented as partial requirement for conclusion do Professional Master in Applied Computing Prof. Dra. Priscila Solis (Advisor) CIC/UnB Prof. Dr. Jacir Bordim Dr. Georges Amvame-Nzê Universidade de Brasília Universidade de Brasília Prof. Dr. Marcelo Ladeira Coordinator of the Post-graduation Program in Applied Computing Brasília, July 1st, 2018 Abstract Backup is a replica of any data that can be used to restore its original form. However, the total amount of digital data created worldwide more than doubles every two years and is expected reach 44 trillions of gigabytes in 2020, bringing constant new challenges to backup processes. Enterprise backup is one of the oldest and most performed tasks by in- frastructure and operations professionals. Still, most backup systems have been designed and optimized for outdated environments and use cases. That fact, generates frustration over currently backup challenges and leads to a greater willingness to modernize and to consider new technologies. Traditional backup and archive solutions are no longer able to meet users current needs. The ideal modern currently backup and recovery software product should not only provide features to attend a traditional data center, but also allow the integration and exploration of the growing Cloud, including “backup client as a service” and “backup storage as a service”. -
The Web ICT Systems for Business Networking Vito Morreale
ICT Systems for Business Networking Vito Morreale The Web ICT Systems for Business Networking Vito Morreale Note. The content of this document is mainly drawn from Wikipedia [www.wikipedia.org] and follows GNU Free Documentation License (GFDL), the license through which Wikipedia's articles are made available. The GNU Free Documentation License (GFDL) permits the redistribution, creation of derivative works, and commercial use of content provided its authors are attributed and this content remains available under the GFDL. Material on Wikipedia (and this document too) may thus be distributed multilingually to, or incorporated from, resources which also use this license. Table of contents 1 INTRODUCTION ................................................................................................................................................ 3 2 HOW THE WEB WORKS .................................................................................................................................. 4 2.1 PUBLISHING WEB PAGES ....................................................................................................................................... 4 2.2 SOCIOLOGICAL IMPLICATIONS ................................................................................................................................ 5 3 UNIFORM RESOURCE IDENTIFIER (URI) ................................................................................................. 5 4 HYPERTEXT TRANSFER PROTOCOL (HTTP) ........................................................................................ -
Cal Anderson, OTARMA IT Risk Control Specialist
2019 CYBER PRESENTATION Cal Anderson, OTARMA IT Risk Control Specialist Cal Anderson Bio • 20 plus years of industry experience in Information Systems, Cyber Security & Risk Management • Specialize in performing Cyber Security, SOX IT, enterprise IT audits and enterprise IT risk assessments of Fortune 500, mid‐range and small scale IT environments. • Specialize in Data Governance, Data validation and flowcharting business processes from beginning to end. • Certified: CISA, CRISC, CWM, CSQL • Certified Notary Public for the state of Ohio Goal • Provide overview of IT Risk Control Specialist function • Provide overview of the IT Risk assessment process • Provide overview of IT Risk Control Specialist function conducting training and providing IT information to the OTARMA member bases. • Provide comprehensive Cyber Security educational content for managing cyber threats. 1 IT RISK CONTROL SPECIALIST FUNCTION High‐Level Tasks perform by the IT Risk Control Specialists: • Conduct IT Risk Assessment o Identification/PII Risks o Analyze risks and how it will affect the member • Risk Evaluation o Costs o Legal Requirements o Environmental Factors o Members handling of risks • Provide recommendations to address IT issues and deficiencies. • Consult with members to answer their questions and to educate/promote awareness. • Conduct IT training IT Risk Assessment Process Members Base Management o Visit Scheduling o Visit Confirmation Onsite IT Risk Assessment o Assessment o Activities Member Base Management Visit Scheduling o Call or email member -
Migrating Enterprise Storage Applications to the Cloud
UNIVERSITY OF CALIFORNIA, SAN DIEGO Migrating Enterprise Storage Applications to the Cloud A dissertation submitted in partial satisfaction of the requirements for the degree Doctor of Philosophy in Computer Science by Michael Daniel Vrable Committee in charge: Professor Stefan Savage, Co-Chair Professor Geoffrey M. Voelker, Co-Chair Professor Bill Lin Professor Paul Siegel Professor Amin Vahdat 2011 Copyright Michael Daniel Vrable, 2011 All rights reserved. The dissertation of Michael Daniel Vrable is approved, and it is acceptable in quality and form for publication on micro- film and electronically: Co-Chair Co-Chair University of California, San Diego 2011 iii DEDICATION To my family, for all the support I’ve received. iv EPIGRAPH If I have seen further it is only by standing on the shoulders of giants. —Sir Isaac Newton v TABLE OF CONTENTS Signature Page . iii Dedication . iv Epigraph . .v Table of Contents . vi List of Figures . ix List of Tables . .x Acknowledgements . xi Vita ......................................... xiii Abstract of the Dissertation . xv Chapter 1 Introduction . .1 1.1 Cloud Computing Applications . .3 1.2 Contributions . .5 1.3 Organization . .6 Chapter 2 Background . .7 2.1 Cloud Providers . .7 2.1.1 Cloud Storage . .8 2.1.2 Cloud Computation . 12 2.2 Enterprise Storage Applications . 13 2.2.1 File System Backup . 14 2.2.2 Shared Network File Systems . 15 Chapter 3 Cumulus . 18 3.1 Related Work . 20 3.2 Design . 22 3.2.1 Storage Server Interface . 23 3.2.2 Storage Segments . 23 3.2.3 Snapshot Format . 24 3.2.4 Sub-File Incrementals . -
Migrating Enterprise Storage Applications to the Cloud
UC San Diego UC San Diego Electronic Theses and Dissertations Title Migrating enterprise storage applications to the cloud Permalink https://escholarship.org/uc/item/0dv3d3p5 Author Vrable, Michael Daniel Publication Date 2011 Peer reviewed|Thesis/dissertation eScholarship.org Powered by the California Digital Library University of California UNIVERSITY OF CALIFORNIA, SAN DIEGO Migrating Enterprise Storage Applications to the Cloud A dissertation submitted in partial satisfaction of the requirements for the degree Doctor of Philosophy in Computer Science by Michael Daniel Vrable Committee in charge: Professor Stefan Savage, Co-Chair Professor Geoffrey M. Voelker, Co-Chair Professor Bill Lin Professor Paul Siegel Professor Amin Vahdat 2011 Copyright Michael Daniel Vrable, 2011 All rights reserved. The dissertation of Michael Daniel Vrable is approved, and it is acceptable in quality and form for publication on micro- film and electronically: Co-Chair Co-Chair University of California, San Diego 2011 iii DEDICATION To my family, for all the support I’ve received. iv EPIGRAPH If I have seen further it is only by standing on the shoulders of giants. —Sir Isaac Newton v TABLE OF CONTENTS Signature Page . iii Dedication . iv Epigraph . .v Table of Contents . vi List of Figures . ix List of Tables . .x Acknowledgements . xi Vita ......................................... xiii Abstract of the Dissertation . xv Chapter 1 Introduction . .1 1.1 Cloud Computing Applications . .3 1.2 Contributions . .5 1.3 Organization . .6 Chapter 2 Background . .7 2.1 Cloud Providers . .7 2.1.1 Cloud Storage . .8 2.1.2 Cloud Computation . 12 2.2 Enterprise Storage Applications . 13 2.2.1 File System Backup . -
Sistemi ICT Per Il Business Networking
Corso di Laurea Specialistica Ingegneria Gestionale Sistemi ICT per il Business Networking The Web Docente: Vito Morreale ([email protected]) 2 April 2006 1 The Web The World Wide Web ("WWW" or simply the "Web") is a global information space which people can read and write via computers connected to the Internet Not a synonym of the Internet: the Web is actually a service that operates over the Internet The Web Internet 2 April 2006 ICT Systems for Business Networking 2 1 The Web The World Wide Web is the combination of four basic ideas: Hypertext: moving from one part of a document to another or from one document to another through internal connections among these documents (called "hyperlinks") Resource identifiers: locating a particular resource (computer, document or other resource) on the network through a unique identifier Client-server model of computing: client software or a client computer makes requests of server software or a server computer that provides the client with resources or services (e.g data or files) Markup language: characters or codes embedded in text indicate to a computer how to print or display the text (e.g. in italics or bold type or font) 2 April 2006 ICT Systems for Business Networking 3 Web browser and server On the Web, a web browser (client) retrieves information resources (e.g. web pages and other files) from web servers using their network addresses and displays them, typically on a computer monitor, using a markup language that determines the details of the display One can then follow hyperlinks in each page to other resources on the Web of information whose location is provided by these hyperlinks The act of following hyperlinks is often called "browsing" the Web Web pages are arranged in collections of related material ("websites“) Web Server Web Browser 2 April 2006 ICT Systems for Business Networking 4 2 Main Web standards At its core, the Web is made up of three standards: the Uniform Resource Identifier (URI): a universal system for referencing resources on the Web (e.g. -
Cumulus: Filesystem Backup to the Cloud
Cumulus: Filesystem Backup to the Cloud MICHAEL VRABLE, STEFAN SAVAGE, and GEOFFREY M. VOELKER University of California, San Diego Cumulus is a system for efficiently implementing filesystem backups over the Internet, specifically designed under a thin cloud assumption—that the remote datacenter storing the backups does not provide any special backup services, but only a least-common-denominator storage interface. Cumulus aggregates data from small files for storage and uses LFS-inspired segment cleaning to maintain storage efficiency. While Cumulus can use virtually any storage service, we show its efficiency is comparable to integrated approaches. Categories and Subject Descriptors: D.4.3 [Operating Systems]: File Systems Management; E.5 [Data]: Files—Backup/recovery General Terms: Design, Economics, Management, Measurement, Reliability 14 Additional Key Words and Phrases: Backup, cloud storage ACM Reference Format: Vrable, M., Savage, S., and Voelker, G. M. 2009. Cumulus: Filesystem backup to the cloud. ACM Trans. Storage 5, 4, Article 14 (December 2009), 28 pages. DOI = 10.1145/1629080.1629084 http://doi.acm.org/10.1145/1629080.1629084 1. INTRODUCTION It has become increasingly popular to talk of “cloud computing” as the next infrastructure for hosting data and deploying software and services. Not sur- prisingly, there are a wide range of different architectures that fall under the umbrella of this vague-sounding term, ranging from highly integrated and fo- cused (e.g., Software As A Service offerings such as Salesforce.com) to decom- posed and abstract (e.g., utility computing such as Amazon’s EC2/S3). Towards This article is an expanded version of the paper “Cumulus: Filesystem Backup to the Cloud” which appeared in the Proceedings of the 7th USENIX Conference on File and Storage Technologies (FAST’09).