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You're reading from Hands-On Machine Learning for Cybersecurity Safeguard your system by making your machines intelligent using the Python ecosystem

Product type Paperback

Published in Dec 2018

Publisher Packt

ISBN-13 9781788992282

Length 318 pages

Edition 1st Edition

Languages

Python

Tools

CUDA

Concepts

Cybersecurity

Authors (2):

Soma Halder

Sinan Ozdemir

View More author details

Table of Contents (13) Chapters

Preface

1. Basics of Machine Learning in Cybersecurity

2. Time Series Analysis and Ensemble Modeling FREE CHAPTER

3. Segregating Legitimate and Lousy URLs

4. Knocking Down CAPTCHAs

5. Using Data Science to Catch Email Fraud and Spam

6. Efficient Network Anomaly Detection Using k-means

7. Decision Tree and Context-Based Malicious Event Detection

8. Catching Impersonators and Hackers Red Handed

9. Changing the Game with TensorFlow

10. Financial Fraud and How Deep Learning Can Mitigate It

11. Case Studies

12. Other Books You May Enjoy

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Knocking Down CAPTCHAs

CAPTCHA is short for Completely Automated Public Turing test to tell Computers and Humans Apart. These are tests that verify whether a computing system is being operated by a human or a robot.

CAPTCHAs were built in such a way that they would need human mediation to be administered to computing systems as a part of the authentication system to ensure system security and hence prevention of unwanted looses for organizations.

Apart from summarizing how CAPTCHA works, this chapter also covers the following topics:

Characteristics of CAPTCHAs
Using artificial intelligence to crack CAPTCHAs
Types of CAPTCHA
Solving CAPTCHAs with neural networks

The following screenshot shows a CAPTCHA image that is used for verification:

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Authors (2)

Halder

Soma Halder is the data science lead of the big data analytics group at Reliance Jio Infocomm Ltd, one of India's largest telecom companies. She specializes in analytics, big data, cybersecurity, and machine learning. She has approximately 10 years of machine learning experience, especially in the field of cybersecurity. She studied at the University of Alabama, Birmingham where she did her master's with an emphasis on Knowledge discovery and Data Mining and computer forensics. She has worked for Visa, Salesforce, and AT&T. She has also worked for start-ups, both in India and the US (E8 Security, Headway ai, and Norah ai). She has several conference publications to her name in the field of cybersecurity, machine learning, and deep learning.

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Sinan Ozdemir

Sinan is an active lecturer focusing on large language models and a former lecturer of data science at the Johns Hopkins University. He is the author of multiple textbooks on data science and machine learning including "Quick Start Guide to LLMs". Sinan is currently the founder of LoopGenius which uses AI to help people and businesses boost their sales and was previously the founder of the acquired Kylie.ai, an enterprise-grade conversational AI platform with RPA capabilities. He holds a Master's Degree in Pure Mathematics from Johns Hopkins University and is based in San Francisco.

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