Neo4j - 7 databases in 7 weeks
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This document summarizes a presentation about the Neo4j graph database. It includes: - An overview of what a graph database is and how Neo4j represents data as nodes and relationships. - An outline of the topics covered in the presentation, including using the Neo4j web UI, REST API, ensuring high availability, and demoing Neo4j's capabilities. - Notes on Neo4j's strengths like being well-suited for network data and weaknesses like licensing costs and limitations of its query languages.
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Epistemic Interaction - tuning interfaces to provide information for AI support
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
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Monitoring and observability aren’t traditionally found in software curriculums and many of us cobble this knowledge together from whatever vendor or ecosystem we were first introduced to and whatever is a part of your current company’s observability stack.
While the dev and ops silo continues to crumble….many organizations still relegate monitoring & observability as the purview of ops, infra and SRE teams. This is a mistake - achieving a highly observable system requires collaboration up and down the stack.
I, a former op, would like to extend an invitation to all application developers to join the observability party will share these foundational concepts to build on:
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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).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
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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.
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Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
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Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Removing Uninteresting Bytes in Software Fuzzing
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.
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Neo4j - 7 databases in 7 weeks
- 1. 1 Tél : +33 (0)1 58 56 10 00 Fax : +33 (0)1 58 56 10 01 www.octo.com© OCTO 2012 50, avenue des Champs-Elysées 75008 Paris - FRANCE 7 databases in 7 weeks Neo4j – A graph database presentation Nicolas Landier
- 2. 2 Neo4j, WTF? BTW, what is a graph? Day-1: WebUI Day-2: REST API Day-3: Consistency and HA Demo?! Strengths & Weaknesses Outline
- 3. 3 Graph oriented database Key-Value minded Schemaless Graph theory based Whiteboard friendly… Neo4j, WTF?
- 5. 5 Node = Vertex Relationship = Edge Property = Attribute BTW, what is a graph? Nexus 4 manufacturer: ‘LG’ color: ‘Black’ Nicolas traits: {‘nice’, ‘awesome’} Loves how_much: ‘you don’t want to know’
- 6. 6 Great and useful WebUI to get familiar and test Create a first data model Gremlin: a Groovy based syntax => exploratory queries Cypher: a SQL-like syntax => criteria queries Create your own DSL g.V.filter{it.name=='Prancing Wolf Ice Wine 2007'}.varietal.name Day-1 – Head first in the web UI! ###CRASH!! $$DB files fucked up### PLEASE FORMAT###
- 7. 7 You can Neo4j query from Java but you better stick with Cypher if you do so! ice_wine = g.v(0) ice_wine.out('grape_type').in('grape_type').filter{ !it.equals(ice_wine) }
- 8. 8 REST API Paths algorithms: shortest, all paths, Dijkstraaaahhh (500) Index: manual indexing Full-Text search Cypher Movie database exercice using external Graph algorithms Day-2 – Let’s move to the REST API!
- 9. 9 1 server: ACID One-liners are implicitly transactions (like PostgreSQL) Transactions can be handled manually Cluster: no more ACID (enterprise only) Master gets elected by servers R/W can be handled by every server but the Master is GOLD version of data Replication is strictly handled by the Master Eventual consistency Zookeeper-based Day-3 – Let’s be HA!
- 10. 10 To relax your eyes
- 11. 11 Write transactions can be performed on any database instance in a cluster. Neo4j HA is fault tolerant and can continue to operate from any number of machines down to a single machine. Slaves will be automatically synchronized with the master on write operations. If the master fails a new master will be elected automatically. The cluster automatically handles instances becoming unavailable (for example due to network issues), and also makes sure to accept them as members in the cluster when they are available again. Transactions are atomic, consistent and durable but eventually propagated out to other slaves. Updates to slaves are eventual consistent by nature but can be configured to be pushed optimistically from master during commit. If the master goes down any running write transaction will be rolled back and new transactions will block or fail until a new master has become available. Reads are highly available and the ability to handle read load scales with more database instances in the cluster. Neo4J HA summed up Source: http://docs.neo4j.org/chunked/snapshot/ha-how.html
- 12. 12 Demo
- 13. 13 Strengths & Weaknesses 2 languages: Groovy support (Gremlin) Cypher Simple data model: « JIT » for developers « Promised scalability » Great for human-related network data DSL definitions are written in stone (not editable, not updatable) Licence cost 6,000 USD/node/year for Commercial 24,000 USD/node/year for Enterprise (HA) Index support??
- 14. 14
- 15. 15 Information is based on my experience from the book from 7 Databases in 7 weeks authored by Eric Redmond and Jim R. Wilson. Thanks for their work. Source