Hacking CAPTCHA Systems Course

Learn how to automatically break through a CAPTCHA system in this course.

1 hour, 57 minutes

Course description

The aim of this course is to implement and use a CAPTCHA-evading bot from scratch. In particular, we will cover the reconnaissance needed for this attack, the training and designing of the deep neural network to power the bot, using selenium to automate the CAPTCHA evasion, and finally, using the created bot on a webpage designed to be attacked.


Assignment: FoolMe

File - 01:00:00

Building a CAPTCHA Breaking Bot

Video - 00:06:00

Design a selenium bot to automatically evade CAPTCHAs.
Training a Deep Neural Network

Video - 00:13:00

Train a deep neural network to identify the text of a CAPTCHA.
Preprocessing the Dataset

Video - 00:24:00

Cropping and preprocessing the CAPTCHA dataset.
Constructing a Dataset

Video - 00:09:00

Modifying the code of Really Simple CAPTCHA to generate a CAPTCHA image dataset.

Video - 00:04:00

Performing reconnaissance for the CAPTCHA breaking bot’s design.
CAPTCHA Breaking

Video - 00:01:00

Sneak preview into writing a selenium bot to evade CAPTCHAs.

Meet the author

Emmanuel Tsukerman

Dr. Tsukerman graduated from Stanford University and UC Berkeley. In 2017, his machine-learning-based anti-ransomware product won Top 10 Ransomware Products by PC Magazine. In 2018, he designed a machine-learning-based malware detection system for Palo Alto Network's WildFire service (over 30,000 customers).

In 2019, Dr. Tsukerman authored the Machine Learning for Cybersecurity Cookbook and launched the Infosec Skills Cybersecurity Data Science Learning Path.

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Associated NICE Work Roles

All Infosec training maps directly to the NICE Workforce Framework for Cybersecurity to guide you from beginner to expert across 52 Work Roles.

  • All-Source Analyst
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Plans & pricing

Infosec Skills Personal

$299 / year

  • 190+ role-guided learning paths (e.g., Ethical Hacking, Threat Hunting)
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  • 100s of hands-on labs in cloud-hosted cyber ranges
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