Code Review Badge

129 Completed
84 Videos
107 Exercises

The Code Review Badge is our badge on code review. It covers the discovery of weaknesses and vulnerabilities using source code review.

Introduction Videos

Snippet Review Exercises

Easy
Golang Snippet #01
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 1357 students
  • Takes < 1 Hr. on average

 

Easy
Golang Snippet #02
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 1099 students
  • Takes < 1 Hr. on average

 

Medium
Golang Snippet #03
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 909 students
  • Takes < 1 Hr. on average

 

Easy
Golang Snippet #04
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 1099 students
  • Takes < 1 Hr. on average

 

Easy
Golang Snippet #05
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 981 students
  • Takes < 1 Hr. on average

 

Easy
Golang Snippet #06
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 865 students
  • Takes < 1 Hr. on average

 

Easy
Golang Snippet #07
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 898 students
  • Takes < 1 Hr. on average

 

Medium
Golang Snippet #08
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 824 students
  • Takes < 1 Hr. on average

 

Easy
Golang Snippet #09
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 775 students
  • Takes < 1 Hr. on average

 

Easy
Golang Snippet #10
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 879 students
  • Takes < 1 Hr. on average

 

Easy
Golang Snippet #11
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 867 students
  • Takes < 1 Hr. on average

 

Medium
Golang Snippet #12
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 759 students
  • Takes < 1 Hr. on average

 

Easy
PHP Snippet #01
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 2048 students
  • Takes < 1 Hr. on average

 

Medium
PHP Snippet #02
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1769 students
  • Takes < 1 Hr. on average

 

Easy
PHP Snippet #03
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1540 students
  • Takes < 1 Hr. on average

 

Medium
PHP Snippet #04
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1458 students
  • Takes < 1 Hr. on average

 

Medium
PHP Snippet #05
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1368 students
  • Takes < 1 Hr. on average

 

Easy
PHP Snippet #06
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1451 students
  • Takes < 1 Hr. on average

 

Easy
PHP Snippet #07
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1326 students
  • Takes < 1 Hr. on average

 

Hard
PHP Snippet #08
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1251 students
  • Takes < 1 Hr. on average

 

Medium
PHP Snippet #09
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1162 students
  • Takes < 1 Hr. on average

 

Easy
Ruby Snippet #01
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 702 students
  • Takes < 1 Hr. on average

 

Medium
Ruby Snippet #02
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 654 students
  • Takes < 1 Hr. on average

 

Easy
Ruby Snippet #03
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 690 students
  • Takes < 1 Hr. on average

 

Medium
Ruby Snippet #04
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 621 students
  • Takes < 1 Hr. on average

 

Easy
Ruby Snippet #05
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 713 students
  • Takes < 1 Hr. on average

 

Easy
Ruby Snippet #06
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 693 students
  • Takes < 1 Hr. on average

 

Easy
Ruby Snippet #07
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 554 students
  • Takes < 1 Hr. on average

 

Easy
Ruby Snippet #08
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 602 students
  • Takes < 1 Hr. on average

 

Medium
Ruby Snippet #09
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 556 students
  • Takes < 1 Hr. on average

 

Medium
Javascript Snippet #01
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1741 students
  • Takes < 1 Hr. on average

 

Easy
Javascript Snippet #02
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1422 students
  • Takes < 1 Hr. on average

 

Easy
Javascript Snippet #03
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1440 students
  • Takes < 1 Hr. on average

 

Medium
Javascript Snippet #04
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1330 students
  • Takes < 1 Hr. on average

 

Easy
Javascript Snippet #05
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1402 students
  • Takes < 1 Hr. on average

 

Easy
Javascript Snippet #06
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1280 students
  • Takes < 1 Hr. on average

 

Medium
Javascript Snippet #07
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1247 students
  • Takes < 1 Hr. on average

 

Easy
TypeScript Snippet #01
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 1086 students
  • Takes < 1 Hr. on average

 

Easy
TypeScript Snippet #02
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 1033 students
  • Takes < 1 Hr. on average

 

Medium
TypeScript Snippet #03
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 959 students
  • Takes < 1 Hr. on average

 

Easy
TypeScript Snippet #04
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 882 students
  • Takes < 1 Hr. on average

 

Medium
TypeScript Snippet #05
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 904 students
  • Takes < 1 Hr. on average

 

Easy
TypeScript Snippet #06
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 790 students
  • Takes < 1 Hr. on average

 

Easy
TypeScript Snippet #07
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 741 students
  • Takes < 1 Hr. on average

 

Easy
TypeScript Snippet #08
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 798 students
  • Takes < 1 Hr. on average

 

Medium
TypeScript Snippet #09
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 830 students
  • Takes < 1 Hr. on average

 

Easy
Java Snippet #01
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1427 students
  • Takes < 1 Hr. on average

 

Medium
Java Snippet #02
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1385 students
  • Takes < 1 Hr. on average

 

Easy
Java Snippet #03
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1233 students
  • Takes < 1 Hr. on average

 

Easy
Java Snippet #04
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1207 students
  • Takes < 1 Hr. on average

 

Easy
Java Snippet #05
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1107 students
  • Takes < 1 Hr. on average

 

Medium
Java Snippet #06
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1016 students
  • Takes < 1 Hr. on average

 

Easy
Java Snippet #07
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1351 students
  • Takes < 1 Hr. on average

 

Easy
Java Snippet #08
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1388 students
  • Takes < 1 Hr. on average

 

Medium
Java Snippet #09
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1015 students
  • Takes < 1 Hr. on average

 

Easy
Java Snippet #10
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1146 students
  • Takes < 1 Hr. on average

 

Easy
Java Snippet #11
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1033 students
  • Takes < 1 Hr. on average

 

Easy
Java Snippet #12
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 994 students
  • Takes < 1 Hr. on average

 

Easy
Python Snippet #01
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1707 students
  • Takes < 1 Hr. on average

 

Easy
Python Snippet #02
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1554 students
  • Takes < 1 Hr. on average

 

Easy
Python Snippet #03
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1389 students
  • Takes < 1 Hr. on average

 

Easy
Python Snippet #04
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1243 students
  • Takes < 1 Hr. on average

 

Easy
Python Snippet #05
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1291 students
  • Takes < 1 Hr. on average

 

Easy
Python Snippet #06
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1376 students
  • Takes < 1 Hr. on average

 

Easy
Python Snippet #07
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1258 students
  • Takes < 1 Hr. on average

 

Easy
Python Snippet #08
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1220 students
  • Takes < 1 Hr. on average

 

Easy
Python Snippet #09
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1257 students
  • Takes < 1 Hr. on average

 

Patch Review Exercises

Easy
CVE-2008-1x3x
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 694 students
  • Takes < 1 Hr. on average
  • PHP

 

Easy
CVE-2008-4x9x
  • This challenge covers the review of a CVE and its patch
  • Completed by 475 students
  • Takes < 1 Hr. on average
  • PHP

 

Easy
CVE-2008-5x8x
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 564 students
  • Takes < 1 Hr. on average
  • Ruby

 

Easy
CVE-2009-3x8x
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 532 students
  • Takes < 1 Hr. on average
  • Ruby

 

Easy
CVE-2020-17xx7
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 941 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
CVE-2020-9x9x
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 715 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
CVE-2006-4xxx
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 520 students
  • Takes < 1 Hr. on average
  • Ruby

 

Easy
CVE-2006-4xxx_ii
  • This challenge covers the review of a CVE and its patch
  • Completed by 416 students
  • Takes < 1 Hr. on average
  • Ruby

 

Easy
CVE-2020-11xxx
  • This challenge covers the review of a CVE and its patch
  • Completed by 520 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
CVE-2020-17xx8
  • This challenge covers the review of a CVE and its patch
  • Completed by 510 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
CVE-2021-37xxx
  • This challenge covers the review of a CVE and its patch
  • Completed by 483 students
  • Takes < 1 Hr. on average
  • Python

 

Easy
CVE-2021-39x3x
  • This challenge covers the review of a CVE and its patch
  • Completed by 403 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
CVE-2021-4379x
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 514 students
  • Takes < 1 Hr. on average
  • Golang

 

Easy
CVE-2021-45xx9
  • This challenge covers a vulnerable snippet in a real Python application
  • Completed by 541 students
  • Takes < 1 Hr. on average
  • Python

 

Easy
CVE-2022-3x7x1
  • This challenge covers the review of a CVE and its patch
  • Completed by 535 students
  • Takes < 1 Hr. on average
  • Java

 

Medium
CVE-2008-5x8x_ii
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 388 students
  • Takes < 1 Hr. on average
  • Ruby

 

Medium
CVE-2019-5x2x
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 373 students
  • Takes < 1 Hr. on average
  • Ruby

 

Medium
CVE-2020-13xxx
  • This challenge covers the review of a CVE and its patch
  • Completed by 426 students
  • Takes < 1 Hr. on average
  • Java

 

Medium
CVE-2021-381xx
  • This challenge covers the review of a CVE and its patch
  • Completed by 435 students
  • Takes < 1 Hr. on average
  • Java

 

Medium
CVE-2021-4xx50
  • This challenge covers the review of a CVE and its patch
  • Completed by 603 students
  • Takes < 1 Hr. on average
  • Golang

 

Medium
CVE-2022-26xx9
  • This challenge covers a vulnerable snippet in a real Java application
  • Completed by 394 students
  • Takes < 1 Hr. on average
  • Java

 

Hard
CVE-2005-2x8x
  • This challenge covers the review of a CVE and its patch
  • Completed by 404 students
  • Takes < 1 Hr. on average
  • PHP

 

Code Review Exercises

Medium
Code Review 01
  • This exercise is one of our challenges to help you learn how to review real source code
  • 2 videos
  • Completed by 645 students
  • Takes 1-2 Hrs. on average
  • JavaScript

 

Medium
Code Review 02
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 400 students
  • Takes 1-2 Hrs. on average
  • Python

 

Hard
Code Review 03
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 245 students
  • Takes 2-4 Hrs. on average
  • JavaScript

 

Hard
Code Review 04
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 327 students
  • Takes 1-2 Hrs. on average
  • JavaScript

 

Hard
Code Review 05
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 214 students
  • Takes 2-4 Hrs. on average
  • JavaScript

 

Medium
Code Review 06
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 182 students
  • Takes 2-4 Hrs. on average
  • Golang

 

Hard
Code Review 07
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 237 students
  • Takes 1-2 Hrs. on average
  • Golang

 

Easy
Code Review 08
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 306 students
  • Takes 1-2 Hrs. on average
  • Golang

 

Hard
Code Review 09
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 208 students
  • Takes 1-2 Hrs. on average
  • Golang

 

Medium
Code Review 10
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 272 students
  • Takes < 1 Hr. on average
  • Golang

 

Hard
Code Review 11
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 168 students
  • Takes 2-4 Hrs. on average
  • C#/.Net

 

Medium
Code Review 12
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 340 students
  • Takes < 1 Hr. on average
  • Java

 

Hard
Code Review 13
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 214 students
  • Takes 2-4 Hrs. on average
  • Java

 

Medium
Code Review 14
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 311 students
  • Takes < 1 Hr. on average
  • Java

 

Medium
Code Review 15
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 289 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
Code Review 16
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 301 students
  • Takes < 1 Hr. on average
  • Java

 

Medium
Code Review 17
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 196 students
  • Takes 1-2 Hrs. on average
  • .Net

 

Medium
Code Review 18
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 183 students
  • Takes 1-2 Hrs. on average
  • Java