Semantically-enabled Digital Investigations
Leveraging Semantic Web technologies for representing, integrating, correlating and querying multi-domain digital forensic data
Data curation and data archiving at different stages of the research processAndrea Scharnhorst
Henk van den Berg, Jerry de Vries, Andrea Scharnhorst (2019) Data curation and data archiving at different stages of the research process. Presentation given at the DANS Colloquium on Research and Data: Women readers finding their literary foremothers, March 21, 2019, The Hague
Video: https://www.youtube.com/watch?v=v69kyU5XMFI
A talk I gave at the Philly Security Shell meetup 2019-02-21 on how the Elastic Stack works and how you can use it for indexing and searching security logs. Tools I mentioned: Github repo with script and demo data - https://github.com/SecHubb/SecShell_Demo Cerebro - https://github.com/lmenezes/cerebro Elastalert - https://github.com/Yelp/elastalert For info on my SANS teaching schedule visit: https://www.sans.org/instructors/john... Twitter: https://twitter.com/SecHubb
Data curation and data archiving at different stages of the research processAndrea Scharnhorst
Henk van den Berg, Jerry de Vries, Andrea Scharnhorst (2019) Data curation and data archiving at different stages of the research process. Presentation given at the DANS Colloquium on Research and Data: Women readers finding their literary foremothers, March 21, 2019, The Hague
Video: https://www.youtube.com/watch?v=v69kyU5XMFI
A talk I gave at the Philly Security Shell meetup 2019-02-21 on how the Elastic Stack works and how you can use it for indexing and searching security logs. Tools I mentioned: Github repo with script and demo data - https://github.com/SecHubb/SecShell_Demo Cerebro - https://github.com/lmenezes/cerebro Elastalert - https://github.com/Yelp/elastalert For info on my SANS teaching schedule visit: https://www.sans.org/instructors/john... Twitter: https://twitter.com/SecHubb
Dataset Descriptions in Open PHACTS and HCLSAlasdair Gray
This presentation gives an overview of the dataset description specification developed in the Open PHACTS project (http://www.openphacts.org/). The creation of the specification was driven by a real need within the project to track the datasets used.
Details of the dataset metadata captured and the vocabularies used to model this metadata are given together with the tools developed to enable the specification's uptake.
Over the course of the last 12 months, the W3C Healthcare and Life Science Interest Group have been developing a community profile for dataset descriptions. This has drawn on the ideas developed in the Open PHACTS specification. A brief overview of the forthcoming community profile is given in the presentation.
This presentation was given to the Network Data Exchange project http://www.ndexbio.org/ on 2 April 2014.
The Rhizomer Semantic Content Management SystemRoberto García
The Rhizomer platform is a Content Management System (CMS) based on a Resource Oriented Approach (RESTful) and Semantic Web technologies. It achieves a great level of flexibility and provides sophisticated content management services. All content is described using semantic metadata semi-automatically extracted from multimedia content, which enriches the browsing experience and enables semantic queries. A usable user interface is built on top of the CMS in order to facilitate the interaction with content and enhance it with the information provided by the associated semantic metadata. As an application scenario of the platform, its use in a media company where audio content is managed and its speech transcript semantically annotated is described.
The Reality of Digital Transfer @ArchivesNZRoss Spencer
Presentation for Archives New Zealand Records Management Network Event describing the reality of digital transfer. Looking at the potential scale of digital transfers from the largest collections we investigated during the initial transfers project and comparing it to the accession work we're currently investigating at time of writing. A look at some of the challenges involved and how we're tackling those.
Extending DSpace 7: DSpace-CRIS and DSpace-GLAM for empowered repositories an...4Science
Presentation given at OR2019 in Hamburg, Germany
In recent years there has been an increasing need to position institutional repositories in a broader context that enhances research opportunities and facilitates the discovery of resources. This presentation is about DSpace-CRIS and DSpace-GLAM, in their new version compatible with DSpace 7, with renewed features built with the updated technology stack of DSpace 7: Angular and REST API, their characteristics and novelties, and how their adoption can empower the role of repositories within academic, research, and cultural heritage institutions. The migration process for both DSpace-CRIS/GLAM and DSpace users that want to enhance their repository with the additional features and capabilities provided by version 7 will be presented. DSpace-CRIS and GLAM are continuously being aligned with DSpace versions and support is provided through the same community channels. Finally, the future roadmap of the project will be discussed, in the same way as in the last ten years when ideas and features blossomed in DSpace-CRIS were later adopted by the standard DSpace distribution. The community is numerous and growing and the exchange of experiences is beneficial for all organizations.
Introduction of semantic technology for SAS programmersKevin Lee
There is a new technology to express and search the data that can provide more meaning and relationship –
semantic technology. The semantic technology can easily add, change and implement the meaning and relationship
to the current data. Companies such as Facebook and Google are currently using the semantic technology. For
example, Facebook Graph Search use semantic technology to enhance more meaningful search for users.
The paper will introduce the basic concepts of semantic technology and its graph data model, Resource Description
Framework (RDF). RDF can link data elements in a self-describing way with elements and property: subject,
predicate and object. The paper will introduce the application and examples of RDF elements. The paper will also
introduce three different representation of RDF: RDF/XML representation, turtle representation and N-triple
representation.
The paper will also introduce “CDISC standards RDF representation, Reference and Review Guide” published by
CDISC and PhUSE CSS. The paper will discuss RDF representation, reference and review guide and show how
CDISC standards are represented and displayed in RDF format.
The paper will also introduce Simple Protocol RDF Query Language (SPARQL) that can retrieve and manipulate data
in RDF format. The paper will show how programmers can use SPARQL to re-represent RDF format of CDISC
standards metadata into structured tabular format.
Finally, paper will discuss the benefits and futures of semantic technology. The paper will also discuss what semantic
technology means to SAS programmers and how programmers take an advantage of this new technology.
DSpace-CRIS: new features and contribution to the DSpace mainstreamAndrea Bollini
The presentation focus on the latest releases of DSpace-CRIS, compatible with DSpace 5 and 6, with new exciting features. Particularly interesting is the recent integration between DSpace-CRIS and CKAN released as an independent module. The DSpace-CKAN Integration Module has already been released in open source (same license than DSpace) and it can easily adopted also by standard DSpace installations, both JSPUI or XMLUI.
Starting with DSpace-CRIS 5.6.1, along with the security fixes of DSpace JSPUI 5.6, the following features have been introduced: an extendible UI to deliver the bitstreams with dedicated viewers, a simple metadata editing of any DSpace object; the editing of archived items using the submission UI; a deduplication and duplicate-alert tool; improved ORCiD synchronization; improved submission form; improved security model for CRIS entities; creation of CRIS object as part of the submission process, automatic calculation of metrics; advanced import framework; on-demand DOI registration; template services.
DSpace-CKAN Integration Module allows users to directly preview the dataset content deposited in a CKAN instance from DSpace via a “curation task”. DSpace-CRIS and DSpace-CKAN will be supported by 4Science also for the future major versions of the platform and the roadmap to the DSpace 7 compatibility will be also presented.
ICIC 2013 Conference Proceedings Andreas Pesenhofer max.recallDr. Haxel Consult
Open Source Search
Andreas Pesenhofer (max.recall, Austria)
Helmut Berger (max.recall, Austria
Open source search technologies receive more and more attention for a growing range of applications. While initially being developed for the sole purpose of search, they are increasingly being used to power analytics applications with the purpose of performing complex operations on large amounts of complex data.
With the ever-increasing amount of data being available on many levels (e.g. personal, team- or company-wide, or global), search often is the only way to get access to the information actually needed. Given the value of this information, the more important it is to have full control over how it is indexed, a fundamental property open source search technologies are able to provide in contrast to many proprietary solutions.
This presentation provides an overview of what can be done with Lucene and Lucene-based search engines like Solr and - recently receiving more attention in the light of cloud-based scale-out solutions - ElasticSearch. These open source projects have reached a state of maturity and commercial support that enabled them to compete with and already replace proprietary solutions of established vendors.
Duraspace Hot Topics Series 6: Metadata and Repository ServicesMatthew Critchlow
Presented by Declan Fleming, Arwen Hutt, and Matt Critchlow. The second in a three part Webinar series on Research Data Curation at UC San Diego, as part of the larger Research Cyberinfrastructure initiative.
My slides as part of a workshop run by colleagues at Archives NZ to help other's understand what a checksum is and how it influences our work.
Covers the concept of hashing, multiple algorithms, and collisions. It is aimed at beginners in digital preservation.
Interoperability is the key: repositories networks promoting the quality and ...Pedro Príncipe
Presentation from José Carvalho and Pedro Principe, University of Minho, at ETD 2019 Conference (22nd International Symposium on Electronic Theses and Dissertations), Porto, Nov 7, 2019.
To many organizations with large and heterogeneous IT systems, adopting Continuous Delivery as a practice can seem very difficult. These slides present views on how to overcome the most common and awkward obstacles. First presented at the Lodon CD Summit in September 2014: https://www.youtube.com/watch?v=wYAungH3B30
Dataset Descriptions in Open PHACTS and HCLSAlasdair Gray
This presentation gives an overview of the dataset description specification developed in the Open PHACTS project (http://www.openphacts.org/). The creation of the specification was driven by a real need within the project to track the datasets used.
Details of the dataset metadata captured and the vocabularies used to model this metadata are given together with the tools developed to enable the specification's uptake.
Over the course of the last 12 months, the W3C Healthcare and Life Science Interest Group have been developing a community profile for dataset descriptions. This has drawn on the ideas developed in the Open PHACTS specification. A brief overview of the forthcoming community profile is given in the presentation.
This presentation was given to the Network Data Exchange project http://www.ndexbio.org/ on 2 April 2014.
The Rhizomer Semantic Content Management SystemRoberto García
The Rhizomer platform is a Content Management System (CMS) based on a Resource Oriented Approach (RESTful) and Semantic Web technologies. It achieves a great level of flexibility and provides sophisticated content management services. All content is described using semantic metadata semi-automatically extracted from multimedia content, which enriches the browsing experience and enables semantic queries. A usable user interface is built on top of the CMS in order to facilitate the interaction with content and enhance it with the information provided by the associated semantic metadata. As an application scenario of the platform, its use in a media company where audio content is managed and its speech transcript semantically annotated is described.
The Reality of Digital Transfer @ArchivesNZRoss Spencer
Presentation for Archives New Zealand Records Management Network Event describing the reality of digital transfer. Looking at the potential scale of digital transfers from the largest collections we investigated during the initial transfers project and comparing it to the accession work we're currently investigating at time of writing. A look at some of the challenges involved and how we're tackling those.
Extending DSpace 7: DSpace-CRIS and DSpace-GLAM for empowered repositories an...4Science
Presentation given at OR2019 in Hamburg, Germany
In recent years there has been an increasing need to position institutional repositories in a broader context that enhances research opportunities and facilitates the discovery of resources. This presentation is about DSpace-CRIS and DSpace-GLAM, in their new version compatible with DSpace 7, with renewed features built with the updated technology stack of DSpace 7: Angular and REST API, their characteristics and novelties, and how their adoption can empower the role of repositories within academic, research, and cultural heritage institutions. The migration process for both DSpace-CRIS/GLAM and DSpace users that want to enhance their repository with the additional features and capabilities provided by version 7 will be presented. DSpace-CRIS and GLAM are continuously being aligned with DSpace versions and support is provided through the same community channels. Finally, the future roadmap of the project will be discussed, in the same way as in the last ten years when ideas and features blossomed in DSpace-CRIS were later adopted by the standard DSpace distribution. The community is numerous and growing and the exchange of experiences is beneficial for all organizations.
Introduction of semantic technology for SAS programmersKevin Lee
There is a new technology to express and search the data that can provide more meaning and relationship –
semantic technology. The semantic technology can easily add, change and implement the meaning and relationship
to the current data. Companies such as Facebook and Google are currently using the semantic technology. For
example, Facebook Graph Search use semantic technology to enhance more meaningful search for users.
The paper will introduce the basic concepts of semantic technology and its graph data model, Resource Description
Framework (RDF). RDF can link data elements in a self-describing way with elements and property: subject,
predicate and object. The paper will introduce the application and examples of RDF elements. The paper will also
introduce three different representation of RDF: RDF/XML representation, turtle representation and N-triple
representation.
The paper will also introduce “CDISC standards RDF representation, Reference and Review Guide” published by
CDISC and PhUSE CSS. The paper will discuss RDF representation, reference and review guide and show how
CDISC standards are represented and displayed in RDF format.
The paper will also introduce Simple Protocol RDF Query Language (SPARQL) that can retrieve and manipulate data
in RDF format. The paper will show how programmers can use SPARQL to re-represent RDF format of CDISC
standards metadata into structured tabular format.
Finally, paper will discuss the benefits and futures of semantic technology. The paper will also discuss what semantic
technology means to SAS programmers and how programmers take an advantage of this new technology.
DSpace-CRIS: new features and contribution to the DSpace mainstreamAndrea Bollini
The presentation focus on the latest releases of DSpace-CRIS, compatible with DSpace 5 and 6, with new exciting features. Particularly interesting is the recent integration between DSpace-CRIS and CKAN released as an independent module. The DSpace-CKAN Integration Module has already been released in open source (same license than DSpace) and it can easily adopted also by standard DSpace installations, both JSPUI or XMLUI.
Starting with DSpace-CRIS 5.6.1, along with the security fixes of DSpace JSPUI 5.6, the following features have been introduced: an extendible UI to deliver the bitstreams with dedicated viewers, a simple metadata editing of any DSpace object; the editing of archived items using the submission UI; a deduplication and duplicate-alert tool; improved ORCiD synchronization; improved submission form; improved security model for CRIS entities; creation of CRIS object as part of the submission process, automatic calculation of metrics; advanced import framework; on-demand DOI registration; template services.
DSpace-CKAN Integration Module allows users to directly preview the dataset content deposited in a CKAN instance from DSpace via a “curation task”. DSpace-CRIS and DSpace-CKAN will be supported by 4Science also for the future major versions of the platform and the roadmap to the DSpace 7 compatibility will be also presented.
ICIC 2013 Conference Proceedings Andreas Pesenhofer max.recallDr. Haxel Consult
Open Source Search
Andreas Pesenhofer (max.recall, Austria)
Helmut Berger (max.recall, Austria
Open source search technologies receive more and more attention for a growing range of applications. While initially being developed for the sole purpose of search, they are increasingly being used to power analytics applications with the purpose of performing complex operations on large amounts of complex data.
With the ever-increasing amount of data being available on many levels (e.g. personal, team- or company-wide, or global), search often is the only way to get access to the information actually needed. Given the value of this information, the more important it is to have full control over how it is indexed, a fundamental property open source search technologies are able to provide in contrast to many proprietary solutions.
This presentation provides an overview of what can be done with Lucene and Lucene-based search engines like Solr and - recently receiving more attention in the light of cloud-based scale-out solutions - ElasticSearch. These open source projects have reached a state of maturity and commercial support that enabled them to compete with and already replace proprietary solutions of established vendors.
Duraspace Hot Topics Series 6: Metadata and Repository ServicesMatthew Critchlow
Presented by Declan Fleming, Arwen Hutt, and Matt Critchlow. The second in a three part Webinar series on Research Data Curation at UC San Diego, as part of the larger Research Cyberinfrastructure initiative.
My slides as part of a workshop run by colleagues at Archives NZ to help other's understand what a checksum is and how it influences our work.
Covers the concept of hashing, multiple algorithms, and collisions. It is aimed at beginners in digital preservation.
Interoperability is the key: repositories networks promoting the quality and ...Pedro Príncipe
Presentation from José Carvalho and Pedro Principe, University of Minho, at ETD 2019 Conference (22nd International Symposium on Electronic Theses and Dissertations), Porto, Nov 7, 2019.
To many organizations with large and heterogeneous IT systems, adopting Continuous Delivery as a practice can seem very difficult. These slides present views on how to overcome the most common and awkward obstacles. First presented at the Lodon CD Summit in September 2014: https://www.youtube.com/watch?v=wYAungH3B30
An ignite sticking up for DevOps teams and asking for them not to be written off completely. Originally presented at DevOps Days 2014 London. Dates back to 2014: https://vimeo.com/79377205
Breaking the 2 Pizza Paradox with your Platform as an ApplicationMark Rendell
In my experience many large enterprises would love the adoption of DevOps to be as simple as bringing Development closer to Operations. In practice they need to consider many development teams, multiple suppliers, multiple service providers, not to mention multiple business divisions. I describe my experiences of implementing Continuous Delivery in large enterprises with heterogeneous technology stacks and share my belief that Platform Applications will be the saviour of enterprise DevOps.
FAIR Workflows and Research Objects get a Workout Carole Goble
So, you want to build a pan-national digital space for bioscience data and methods? That works with a bunch of pre-existing data repositories and processing platforms? So you can share FAIR workflows and move them between services? Package them up with data and other stuff (or just package up data for that matter)? How? WorkflowHub (https://workflowhub.eu) and RO-Crate Research Objects (https://www.researchobject.org/ro-crate) that’s how! A step towards FAIR Digital Objects gets a workout.
Presented at DataVerse Community Meeting 2021
State of Florida Neo4j Graph Briefing - Cyber IAMNeo4j
Identity is based on relationships. Graph databases ensure those connections are current, scoped to actual requirements, and secure. David Rosenblum will discuss how customers from large financial institutions to smart home security systems are IAM enabled with Neo4j.
Dec'2013 webinar from the EUCLID project on managing large volumes of Linked Data
webinar recording at https://vimeo.com/84126769 and https://vimeo.com/84126770
more info on EUCLID: http://euclid-project.eu/
Linked services: Connecting services to the Web of DataJohn Domingue
Keynote from the International Conference on e-Business Engineering, September 2013. The talk covers a short integration to Linked Data, our approach to building applications on top of the Web of Data (which we term Linked Services) and a number of applications in the areas of house hunting: crowdsourcing car parking, sharing human body processes. The talk also covers recent work on transforming SAP's Unified Service Description Language to a Linked Data format.
This presentation was given by Ted Lawless of Thomson Reuters during the NISO Virtual Conference, BIBFRAME & Real World Applications of Linked Bibliographic Data, held on June 15, 2016.
CLARIAH Toogdag 2018: A distributed network of digital heritage informationEnno Meijers
Slides of my keynote at the CLARIAH Toogdag 2018 on 9 March at the National Library of the Netherlands. The main topics were the development of the distributed digital heritage network and the alignment to and cooperation with the CLARIAH infrastructure and data. It also points at some of the current limitations of the semantic web technology.
Multi-Tenancy in Data Lakes are on the rise. When looking at multi-tenancy from the lens of data governance, a lot is changing the landscape, and the way we have been operating with respect to the governance model probably needs a rethink. It is time to think of Governance and its various entities as a first-class citizen in data architecture and bake it as part of the platform. We will look at the various aspects of governance, extending to accommodate the growing compliance and regulatory requirements and suggestive architectural approaches to realize the same.
Presentation titled Librarians' adventure into LODLAM by Silvia Southwick & Cory Lampert during the SemTech LODLAM Training, San Jose, CA, August 19, 2014
WOTS2E: A Search Engine for a Semantic Web of ThingsAndreas Kamilaris
A Semantic Web of Things (SWoT) brings together the Semantic Web and the Web of Things (WoT), associating
semantically annotated information to web-enabled physical de-
vices, services and their data, towards seamless data integration and better understanding of real-world information. A missing element in order to realize SWoT is a standardized, scalable and flexible way to globally discover in (near) real time web-connected embedded devices, as well as their semantic data. To address this gap, we propose WOT Semantic Search Engine (WOTS2E), which is a search engine for the SWoT, based on web crawling, being able to discover Linked Data endpoints and, through them, WoT-enabled devices and their services. In this presentation, we describe the design, development and implementation of WOTS2E, as well as an evaluation procedure showing its operation and performance across the web.
This presentation was provided by
Priscilla Caplan of The Florida Center for Library Automation and Jeremy York of The University of Michigan Library, during the NISO Webinar "What It Takes To Make It Last: E-Resources Preservation" held on February 10, 2011.
A collaborative approach to "filling the digital preservation gap" for Resear...Jenny Mitcham
A presentation given by Jenny Mitcham at the Northern Collaboration Conference on 10th September 2015 at Leeds. It describes work underway in the "Filling the Digital Preservation Gap" project using Archivematica to preserve research data
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GraphSummit Singapore | The Future of Agility: Supercharging Digital Transfor...Neo4j
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Communications Mining Series - Zero to Hero - Session 1DianaGray10
This session provides introduction to UiPath Communication Mining, importance and platform overview. You will acquire a good understand of the phases in Communication Mining as we go over the platform with you. Topics covered:
• Communication Mining Overview
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• How can it help today’s business and the benefits
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Securing your Kubernetes cluster_ a step-by-step guide to success !KatiaHIMEUR1
Today, after several years of existence, an extremely active community and an ultra-dynamic ecosystem, Kubernetes has established itself as the de facto standard in container orchestration. Thanks to a wide range of managed services, it has never been so easy to set up a ready-to-use Kubernetes cluster.
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GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
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Gopinath Rebala
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Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
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Removing Uninteresting Bytes in Software FuzzingAftab Hussain
Imagine a world where software fuzzing, the process of mutating bytes in test seeds to uncover hidden and erroneous program behaviors, becomes faster and more effective. A lot depends on the initial seeds, which can significantly dictate the trajectory of a fuzzing campaign, particularly in terms of how long it takes to uncover interesting behaviour in your code. We introduce DIAR, a technique designed to speedup fuzzing campaigns by pinpointing and eliminating those uninteresting bytes in the seeds. Picture this: instead of wasting valuable resources on meaningless mutations in large, bloated seeds, DIAR removes the unnecessary bytes, streamlining the entire process.
In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
3. Problem Area
• Complex attacks against
networked systems
• Multiple data sources of possible
evidentiary value
– Volume & Variety
– ”looking for a needle in a stack of
needles” – Paul Pillar, CIA CoA
• Analysis of the collected digital
data
– Least formalized process step
– Rely on investigators’ expertise and
experience
2015-05-17 ISACA Dagen 2013
4. Digital Evidence / Investigations
• Reliable digital data that support
hypothesizing about a security
incident
• Sound methods for collecting and
interpreting digital data
• Reconstruct events found to be
criminal (DF)
• Investigate and learn from
information security breaches (IR)2015-05-17 ISACA Dagen 2013
5. Forensic Tools
• Interpreters between data
abstraction layers
– e.g. Reconstruct raw disk data into
filesystem hierarchy and objects (files,
directories)
• Evidence- but not investigation-
centric design
• Limited tool interoperability
– Manual integration of tool findings
– Multiple (proprietary, undocumented)
data formats/models
2015-05-17 ISACA Dagen 2013
7. Semantic Web & Linked Data
Technologies
• ”… information is given well-defined
meaning, better enabling computers
and people to work in cooperation” –
(Tim Berners Lee, 2001)
• Ontology – ”explicit and formal
specification of a conceptualization”
– Entities, attributes, relationships
• Metadata - Context-based or domain-
specific annotation of data
• Reason and inference of implicit facts
2015-05-17 ISACA Dagen 2013
8. Semantic Web Architecture
• URI/IRI enables global data object
identification
• XML provides a machine readable,
validatable data encoding scheme
• RDF(S) is a metadata data model and
knowledge representation language
– Subject-Property-Object/Value statements
– Class and Property hierarchies
• OWL 2 is a more expressive KR
language for specifying ontologies
– Restrictions, Equivalence, Cardinality,
Property Chains
• Rule and RDF-query languages
2015-05-17 ISACA Dagen 2013
12. Semantic Representation
• Resource Unique Identification Scheme
• Parsing tools able to process each source type with
respect to the domain ontology
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13. Evidence Integration
• Automated linking among (homo/hetero-)geneous evidence
sources based on key properties & matching rules
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14. Evidence Correlation
• Link instances of dissimilar
type across a shared
domain
• Temporal Correlation
– Rules for establishing time
instant & interval relations
among recovered artifacts
• Mereological Correlation
– “partOf” transitivity relations
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16. Integrated Query
• Purpose-built triplestore (graph) database engine can
store the final dataset
– Up to billions of triples
• SQL-like queries against the integrated/correlated
evidence set
• Graph pattern matching
techniques
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20. Sample Query
• “Is any file resident on the disk malicious and if yes where
has it been downloaded from and which ISP did the IP
belong to?”
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22. Example Hypothesies-Queries
• Have there been any unsuccessful connection attempts
from systems in the same network as the one that hosted
the malicious file?
• Which disk files have been created or accessed shortly after
the malicious file was downloaded?
• Has there been any successful connection between our
system and a known malicious host?
• Which files have been accessed shortly before the host
communicated with any blacklisted network host?
• Which websites have been visited by the user shortly
before the download of the malicious file?
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23. Summary
• Ability to represent and integrate heterogeneous data
• Supports the formulation and execution of complex queries
• Expandable (ontologies, rules, queries)
• Computational complexity depends on the ontology, rules,
amount of data
• Reliance to online data sources may affect the accuracy of
the results
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24. Future Work
• Advanced reasoning capabilities (e.g. detect
anti-forensic inconsistencies)
• Extended analysis techniques (e.g. additional
data sources, user activities)
• Large scale performance evaluation, distributed
architecture
• User-friendly graphical interface for rule/query
formulation and result navigation
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