Fraud detection with Machine Learning

•

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ScaleDay conference

Arnaud Wald
MACHINE LEARNING ENGINEER
FRAUD DETECTION
WITH MACHINE LEARNING
2

WHAT IS FRAUD ?
3

4
Stolen Credit Card → Unpaid resources
FRAUD @ SCALEWAY

DEALING WITH FRAUD
Quotas Manual
Intervention
5

6
Frequency Magnitude Sophistication
INCREASING TRENDS

THE IDEAL SOLUTION
7
While having a low false positive rate
Fast Scalable Adaptable

IS THERE A SOLUTION?
8

MACHINE LEARNING
9
While having a low false posiJve rate
Fast Scalable Adaptable✓ ✓ ✓
✓

MACH IN E LEARN IN G
PRO JECT
10

OBJECTIVE
11
ML
MODEL
Fraud
Non Fraud
New User ACTION

MACHINE LEARNING PIPELINE
12
ML
MODEL
Fraud
Non Fraud
New User ACTION

ML PIPELINE
13
Data
Preparation
Model Building
& Training
Model
Deployment

WHERE DO WE GET THE DATA ?
14

GATHERING DATA
15
Email
ToS
Phone
Address
Credit
Card
2FA
Start
Instance
SSH

CHOOSING A
MACHINE LEARNING MODEL
16

Deep Learning
- Very Powerful
- Needs lots (millions) of data
Classic ML:
Random Forest
Gradient Boosting
Choosing a Machine Learning Algorithm
17
MODEL SELECTION
Chosen algorithm: CatBoost

- Number of trees
- Depth of trees
- Learning rate
18
HYPERPARAMETERS
Example from Titanic data
Source: Wikipedia

CatBoost brings:
- Powerful
- Open-source
- Handles categorical data very well
- Automatic overfitting detection
- (Works on GPU)
19
CATBOOST

EVALUATING PERFORMANCE
20

Trade-off between being too severe/ Being too friendly
Avoiding Overfitting
False positives > Innocents wrongly flagged
False Negatives > Fraudsters not detected
EVALUATING PERFORMANCE
Hyperparameter Tuning
21

MACHINE LEARNING PIPELINE
22
ML
MODEL
Fraud
Non Fraud
New User ACTION

GOING FURTHER
23

NEW PRO D U CTS
24
OTHER FRAUD BEHAVIORS

Stay tuned for exclusive tutorials and updates,
follow us on Twitter and LinkedIn @Scaleway
THANK YOU !
And follow me on LinkedIn
@ArnaudWald

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L’évolution des serveurs dédiés vers le Bare Metal et les instances : comm...

L’évolution des serveurs dédiés vers le Bare Metal et les instances : comm...

L’évolution des serveurs dédiés vers le Bare Metal et les instances : comm...

L’IA, booster de votre activité : principes, usages & idéation

L’IA, booster de votre activité : principes, usages & idéation

L’IA, booster de votre activité : principes, usages & idéation

Comment automatiser le déploiement de sa plateforme sur des infrastructures ...

Comment automatiser le déploiement de sa plateforme sur des infrastructures ...

Comment automatiser le déploiement de sa plateforme sur des infrastructures ...

Serverless

Migrating the Online’s console with Docker

Migrating the Online’s console with Docker

Migrating the Online’s console with Docker

Routage à grande échelle des requêtes via RabbitMQ

Routage à grande échelle des requêtes via RabbitMQ

Routage à grande échelle des requêtes via RabbitMQ

Instances Behind the Scene: What happen when you click on «create a new insta...

Instances Behind the Scene: What happen when you click on «create a new insta...

Instances Behind the Scene: What happen when you click on «create a new insta...

Demystifying IoT : Bringing the cloud to connected devices with IoT Station

Demystifying IoT : Bringing the cloud to connected devices with IoT Station

Demystifying IoT : Bringing the cloud to connected devices with IoT Station

L’odyssée d’une requête HTTP chez Scaleway

L’odyssée d’une requête HTTP chez Scaleway

L’odyssée d’une requête HTTP chez Scaleway

Dernier

The value of a flexible API Management solution for Open Banking Steve Melan, Manager for IT Innovation and Architecture - State's and Saving's Bank of Luxembourg Apidays New York 2024: The API Economy in the AI Era (April 30 & May 1, 2024) ------ Check out our conferences at https://www.apidays.global/ Do you want to sponsor or talk at one of our conferences? https://apidays.typeform.com/to/ILJeAaV8 Learn more on APIscene, the global media made by the community for the community: https://www.apiscene.io Explore the API ecosystem with the API Landscape: https://apilandscape.apiscene.io/

Apidays New York 2024 - The value of a flexible API Management solution for O...

Apidays New York 2024 - The value of a flexible API Management solution for O...

Apidays New York 2024 - The value of a flexible API Management solution for O...

The Good, the Bad and the Governed - Why is governance a dirty word? David O'Neill, Chief Operating Officer - APIContext Apidays New York 2024: The API Economy in the AI Era (April 30 & May 1, 2024) ------ Check out our conferences at https://www.apidays.global/ Do you want to sponsor or talk at one of our conferences? https://apidays.typeform.com/to/ILJeAaV8 Learn more on APIscene, the global media made by the community for the community: https://www.apiscene.io Explore the API ecosystem with the API Landscape: https://apilandscape.apiscene.io/

Apidays New York 2024 - The Good, the Bad and the Governed by David O'Neill, ...

Apidays New York 2024 - The Good, the Bad and the Governed by David O'Neill, ...

Apidays New York 2024 - The Good, the Bad and the Governed by David O'Neill, ...

Following the popularity of “Cloud Revolution: Exploring the New Wave of Serverless Spatial Data,” we’re thrilled to announce this much-anticipated encore webinar. In this sequel, we’ll dive deeper into the Cloud-Native realm by uncovering practical applications and FME support for these new formats, including COGs, COPC, FlatGeoBuf, GeoParquet, STAC, and ZARR. Building on the foundation laid by industry leaders Michelle Roby of Radiant Earth and Chris Holmes of Planet in the first webinar, this second part offers an in-depth look at the real-world application and behind-the-scenes dynamics of these cutting-edge formats. We will spotlight specific use-cases and workflows, showcasing their efficiency and relevance in practical scenarios. Discover the vast possibilities each format holds, highlighted through detailed discussions and demonstrations. Our expert speakers will dissect the key aspects and provide critical takeaways for effective use, ensuring attendees leave with a thorough understanding of how to apply these formats in their own projects. Elevate your understanding of how FME supports these cutting-edge technologies, enhancing your ability to manage, share, and analyze spatial data. Whether you’re building on knowledge from our initial session or are new to the serverless spatial data landscape, this webinar is your gateway to mastering cloud-native formats in your workflows.

Cloud Frontiers: A Deep Dive into Serverless Spatial Data and FME

Cloud Frontiers: A Deep Dive into Serverless Spatial Data and FME

Cloud Frontiers: A Deep Dive into Serverless Spatial Data and FME

Scaling API-first – The story of a global engineering organization Ian Reasor, Senior Computer Scientist - Adobe Radu Cotescu, Senior Computer Scientist - Adobe Apidays New York 2024: The API Economy in the AI Era (April 30 & May 1, 2024) ------ Check out our conferences at https://www.apidays.global/ Do you want to sponsor or talk at one of our conferences? https://apidays.typeform.com/to/ILJeAaV8 Learn more on APIscene, the global media made by the community for the community: https://www.apiscene.io Explore the API ecosystem with the API Landscape: https://apilandscape.apiscene.io/

Apidays New York 2024 - Scaling API-first by Ian Reasor and Radu Cotescu, Adobe

Apidays New York 2024 - Scaling API-first by Ian Reasor and Radu Cotescu, Adobe

Apidays New York 2024 - Scaling API-first by Ian Reasor and Radu Cotescu, Adobe

EMPOWERMENT TECHNOLOGY GRADE 11 QUARTER 2 REVIEWER

EMPOWERMENT TECHNOLOGY GRADE 11 QUARTER 2 REVIEWER

EMPOWERMENT TECHNOLOGY GRADE 11 QUARTER 2 REVIEWER

Architecting Cloud Native Applications

Architecting Cloud Native Applications

Architecting Cloud Native Applications

Polkadot JAM Slides - Token2049 - By Dr. Gavin Wood

Polkadot JAM Slides - Token2049 - By Dr. Gavin Wood

Polkadot JAM Slides - Token2049 - By Dr. Gavin Wood

Juan lago vázquez

AWS Community Day CPH - Three problems of Terraform

AWS Community Day CPH - Three problems of Terraform

AWS Community Day CPH - Three problems of Terraform

Andrey Devyatkin

Vector Search -An Introduction in Oracle Database 23ai.pptx

Vector Search -An Introduction in Oracle Database 23ai.pptx

Vector Search -An Introduction in Oracle Database 23ai.pptx

Remote DBA Services

Corporate and higher education. Two industries that, in the past, have had a clear divide with very little crossover. The difference in goals, learning styles and objectives paved the way for differing learning technologies platforms to evolve. Now, those stark lines are blurring as both sides are discovering they have content that’s relevant to the other. Join Tammy Rutherford as she walks through the pros and cons of corporate and higher ed collaborating. And the challenges of these different technology platforms working together for a brighter future.

Corporate and higher education May webinar.pptx

Corporate and higher education May webinar.pptx

Corporate and higher education May webinar.pptx

Rustici Software

ProductAnonymous-April2024-WinProductDiscovery-MelissaKlemke

ProductAnonymous-April2024-WinProductDiscovery-MelissaKlemke

ProductAnonymous-April2024-WinProductDiscovery-MelissaKlemke

Product Anonymous

CNIC Information System with Pakdata Cf In Pakistan

CNIC Information System with Pakdata Cf In Pakistan

CNIC Information System with Pakdata Cf In Pakistan

ICT role in 21st century education and its challenges

ICT role in 21st century education and its challenges

ICT role in 21st century education and its challenges

rafiqahmad00786416

💥 You’re lucky! We’ve found two different (lead) developers that are willing to share their valuable lessons learned about using UiPath Document Understanding! Based on recent implementations in appealing use cases at Partou and SPIE. Don’t expect fancy videos or slide decks, but real and practical experiences that will help you with your own implementations. 📕 Topics that will be addressed: • Training the ML-model by humans: do or don't? • Rule-based versus AI extractors • Tips for finding use cases • How to start 👨‍🏫👨‍💻 Speakers: o Dion Morskieft, RPA Product Owner @Partou o Jack Klein-Schiphorst, Automation Developer @Tacstone Technology

DEV meet-up UiPath Document Understanding May 7 2024 Amsterdam

DEV meet-up UiPath Document Understanding May 7 2024 Amsterdam

DEV meet-up UiPath Document Understanding May 7 2024 Amsterdam

UiPathCommunity

Tracing the root cause of a performance issue requires a lot of patience, experience, and focus. It’s so hard that we sometimes attempt to guess by trying out tentative fixes, but that usually results in frustration, messy code, and a considerable waste of time and money. This talk explains how to correctly zoom in on a performance bottleneck using three levels of profiling: distributed tracing, metrics, and method profiling. After we learn to read the JVM profiler output as a flame graph, we explore a series of bottlenecks typical for backend systems, like connection/thread pool starvation, invisible aspects, blocking code, hot CPU methods, lock contention, and Virtual Thread pinning, and we learn to trace them even if they occur in library code you are not familiar with. Attend this talk and prepare for the performance issues that will eventually hit any successful system. About authorWith two decades of experience, Victor is a Java Champion working as a trainer for top companies in Europe. Five thousands developers in 120 companies attended his workshops, so he gets to debate every week the challenges that various projects struggle with. In return, Victor summarizes key points from these workshops in conference talks and online meetups for the European Software Crafters, the world’s largest developer community around architecture, refactoring, and testing. Discover how Victor can help you on victorrentea.ro : company training catalog, consultancy and YouTube playlists.

Finding Java's Hidden Performance Traps @ DevoxxUK 2024

Finding Java's Hidden Performance Traps @ DevoxxUK 2024

Finding Java's Hidden Performance Traps @ DevoxxUK 2024

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MINDCTI Revenue Release Quarter One 2024

MINDCTI Revenue Release Quarter One 2024

MINDCTI Revenue Release Quarter One 2024

Three things you will take away from the session: • How to run an effective tenant-to-tenant migration • Best practices for before, during, and after migration • Tips for using migration as a springboard to prepare for Copilot in Microsoft 365 Main ideas: Migration Overview: The presentation covers the current reality of cross-tenant migrations, the triggers, phases, best practices, and benefits of a successful tenant migration Considerations: When considering a migration, it is important to consider the migration scope, performance, customization, flexibility, user-friendly interface, automation, monitoring, support, training, scalability, data integrity, data security, cost, and licensing structure Next Wave: The next wave of change includes the launch of Copilot, which requires businesses to be prepared for upcoming changes related to Copilot and the cloud, and to consolidate data and tighten governance ShareGate: ShareGate can help with pre-migration analysis, configurable migration tool, and automated, end-user driven collaborative governance

Strategize a Smooth Tenant-to-tenant Migration and Copilot Takeoff

Strategize a Smooth Tenant-to-tenant Migration and Copilot Takeoff

Strategize a Smooth Tenant-to-tenant Migration and Copilot Takeoff

In this keynote, Asanka Abeysinghe, CTO,WSO2 will explore the shift towards platformless technology ecosystems and their importance in driving digital adaptability and innovation. We will discuss strategies for leveraging decentralized architectures and integrating diverse technologies, with a focus on building resilient, flexible, and future-ready IT infrastructures. We will also highlight WSO2's roadmap, emphasizing our commitment to supporting this transformative journey with our evolving product suite.

Platformless Horizons for Digital Adaptability

Platformless Horizons for Digital Adaptability

Platformless Horizons for Digital Adaptability

Accelerating FinTech Innovation: Unleashing API Economy and GenAI Vasa Krishnan, Chief Technology Officer - FinResults Apidays New York 2024: The API Economy in the AI Era (April 30 & May 1, 2024) ------ Check out our conferences at https://www.apidays.global/ Do you want to sponsor or talk at one of our conferences? https://apidays.typeform.com/to/ILJeAaV8 Learn more on APIscene, the global media made by the community for the community: https://www.apiscene.io Explore the API ecosystem with the API Landscape: https://apilandscape.apiscene.io/

Apidays New York 2024 - Accelerating FinTech Innovation by Vasa Krishnan, Fin...

Apidays New York 2024 - Accelerating FinTech Innovation by Vasa Krishnan, Fin...

Apidays New York 2024 - Accelerating FinTech Innovation by Vasa Krishnan, Fin...

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Apidays New York 2024 - The value of a flexible API Management solution for O...

Apidays New York 2024 - The value of a flexible API Management solution for O...

Apidays New York 2024 - The value of a flexible API Management solution for O...

Apidays New York 2024 - The Good, the Bad and the Governed by David O'Neill, ...

Apidays New York 2024 - The Good, the Bad and the Governed by David O'Neill, ...

Apidays New York 2024 - The Good, the Bad and the Governed by David O'Neill, ...

Cloud Frontiers: A Deep Dive into Serverless Spatial Data and FME

Cloud Frontiers: A Deep Dive into Serverless Spatial Data and FME

Cloud Frontiers: A Deep Dive into Serverless Spatial Data and FME

Apidays New York 2024 - Scaling API-first by Ian Reasor and Radu Cotescu, Adobe

Apidays New York 2024 - Scaling API-first by Ian Reasor and Radu Cotescu, Adobe

Apidays New York 2024 - Scaling API-first by Ian Reasor and Radu Cotescu, Adobe

EMPOWERMENT TECHNOLOGY GRADE 11 QUARTER 2 REVIEWER

EMPOWERMENT TECHNOLOGY GRADE 11 QUARTER 2 REVIEWER

EMPOWERMENT TECHNOLOGY GRADE 11 QUARTER 2 REVIEWER

Architecting Cloud Native Applications

Architecting Cloud Native Applications

Architecting Cloud Native Applications

Polkadot JAM Slides - Token2049 - By Dr. Gavin Wood

Polkadot JAM Slides - Token2049 - By Dr. Gavin Wood

Polkadot JAM Slides - Token2049 - By Dr. Gavin Wood

AWS Community Day CPH - Three problems of Terraform

AWS Community Day CPH - Three problems of Terraform

AWS Community Day CPH - Three problems of Terraform

Vector Search -An Introduction in Oracle Database 23ai.pptx

Vector Search -An Introduction in Oracle Database 23ai.pptx

Vector Search -An Introduction in Oracle Database 23ai.pptx

Corporate and higher education May webinar.pptx

Corporate and higher education May webinar.pptx

Corporate and higher education May webinar.pptx

ProductAnonymous-April2024-WinProductDiscovery-MelissaKlemke

ProductAnonymous-April2024-WinProductDiscovery-MelissaKlemke

ProductAnonymous-April2024-WinProductDiscovery-MelissaKlemke

CNIC Information System with Pakdata Cf In Pakistan

CNIC Information System with Pakdata Cf In Pakistan

CNIC Information System with Pakdata Cf In Pakistan

ICT role in 21st century education and its challenges

ICT role in 21st century education and its challenges

ICT role in 21st century education and its challenges

DEV meet-up UiPath Document Understanding May 7 2024 Amsterdam

DEV meet-up UiPath Document Understanding May 7 2024 Amsterdam

DEV meet-up UiPath Document Understanding May 7 2024 Amsterdam

Finding Java's Hidden Performance Traps @ DevoxxUK 2024

Finding Java's Hidden Performance Traps @ DevoxxUK 2024

Finding Java's Hidden Performance Traps @ DevoxxUK 2024

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MINDCTI Revenue Release Quarter One 2024

MINDCTI Revenue Release Quarter One 2024

MINDCTI Revenue Release Quarter One 2024

Strategize a Smooth Tenant-to-tenant Migration and Copilot Takeoff

Strategize a Smooth Tenant-to-tenant Migration and Copilot Takeoff

Strategize a Smooth Tenant-to-tenant Migration and Copilot Takeoff

Platformless Horizons for Digital Adaptability

Platformless Horizons for Digital Adaptability

Platformless Horizons for Digital Adaptability

Apidays New York 2024 - Accelerating FinTech Innovation by Vasa Krishnan, Fin...

Apidays New York 2024 - Accelerating FinTech Innovation by Vasa Krishnan, Fin...

Apidays New York 2024 - Accelerating FinTech Innovation by Vasa Krishnan, Fin...

Fraud detection with Machine Learning

2. Arnaud Wald MACHINE LEARNING ENGINEER FRAUD DETECTION WITH MACHINE LEARNING 2

3. WHAT IS FRAUD ? 3

4. 4 Stolen Credit Card → Unpaid resources FRAUD @ SCALEWAY

5. DEALING WITH FRAUD Quotas Manual Intervention 5

6. 6 Frequency Magnitude Sophistication INCREASING TRENDS

7. THE IDEAL SOLUTION 7 While having a low false positive rate Fast Scalable Adaptable

8. IS THERE A SOLUTION? 8

9. MACHINE LEARNING 9 While having a low false posiJve rate Fast Scalable Adaptable✓ ✓ ✓ ✓

10. MACH IN E LEARN IN G PRO JECT 10

11. OBJECTIVE 11 ML MODEL Fraud Non Fraud New User ACTION

12. MACHINE LEARNING PIPELINE 12 ML MODEL Fraud Non Fraud New User ACTION

13. ML PIPELINE 13 Data Preparation Model Building & Training Model Deployment

14. WHERE DO WE GET THE DATA ? 14

15. GATHERING DATA 15 Email ToS Phone Address Credit Card 2FA Start Instance SSH

16. CHOOSING A MACHINE LEARNING MODEL 16

17. Deep Learning - Very Powerful - Needs lots (millions) of data Classic ML: Random Forest Gradient Boosting Choosing a Machine Learning Algorithm 17 MODEL SELECTION Chosen algorithm: CatBoost

18. - Number of trees - Depth of trees - Learning rate 18 HYPERPARAMETERS Example from Titanic data Source: Wikipedia

19. CatBoost brings: - Powerful - Open-source - Handles categorical data very well - Automatic overfitting detection - (Works on GPU) 19 CATBOOST

20. EVALUATING PERFORMANCE 20

21. Trade-off between being too severe/ Being too friendly Avoiding Overfitting False positives > Innocents wrongly flagged False Negatives > Fraudsters not detected EVALUATING PERFORMANCE Hyperparameter Tuning 21

22. MACHINE LEARNING PIPELINE 22 ML MODEL Fraud Non Fraud New User ACTION

23. GOING FURTHER 23

24. NEW PRO D U CTS 24 OTHER FRAUD BEHAVIORS

25. Stay tuned for exclusive tutorials and updates, follow us on Twitter and LinkedIn @Scaleway THANK YOU ! And follow me on LinkedIn @ArnaudWald