Code Review Badge

70 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.

Code Review 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 1111 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 901 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 741 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 819 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 794 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 693 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 720 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 669 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 627 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 705 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 691 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 612 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 1735 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 1478 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 1261 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 1200 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 1119 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 1187 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 1063 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 924 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 921 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 540 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 518 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 547 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 492 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 560 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 542 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 436 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 478 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 438 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 1469 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 1171 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 1198 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 1108 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 1157 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 1054 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 1037 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 883 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 831 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 774 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 693 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 714 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 618 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 572 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 627 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 656 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 1175 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 1166 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 1016 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 993 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 896 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 823 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 1160 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 1194 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 834 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 950 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 844 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 805 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 1405 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 1281 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 1131 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 1000 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 1048 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 1145 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 1032 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 1009 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 1025 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 529 students
  • Takes < 1 Hr. on average
  • PHP

 

Easy
CVE-2008-4x9x
  • This challenge covers the review of a CVE and its patch
  • Completed by 364 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 424 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 413 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 670 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 545 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 431 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 331 students
  • Takes < 1 Hr. on average
  • Ruby

 

Easy
CVE-2020-11xxx
  • This challenge covers the review of a CVE and its patch
  • Completed by 421 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
CVE-2020-17xx8
  • This challenge covers the review of a CVE and its patch
  • Completed by 413 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
CVE-2021-37xxx
  • This challenge covers the review of a CVE and its patch
  • Completed by 383 students
  • Takes < 1 Hr. on average
  • Python

 

Easy
CVE-2021-39x3x
  • This challenge covers the review of a CVE and its patch
  • Completed by 311 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 440 students
  • Takes < 1 Hr. on average
  • Golang

 

Easy
CVE-2021-45xx9
  • This challenge covers a vulnerable snippet in a real Python application
  • Completed by 443 students
  • Takes < 1 Hr. on average
  • Python

 

Easy
CVE-2022-3x7x1
  • This challenge covers the review of a CVE and its patch
  • Completed by 443 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 305 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 293 students
  • Takes < 1 Hr. on average
  • Ruby

 

Medium
CVE-2020-13xxx
  • This challenge covers the review of a CVE and its patch
  • Completed by 333 students
  • Takes < 1 Hr. on average
  • Java

 

Medium
CVE-2021-381xx
  • This challenge covers the review of a CVE and its patch
  • Completed by 347 students
  • Takes < 1 Hr. on average
  • Java

 

Medium
CVE-2021-4xx50
  • This challenge covers the review of a CVE and its patch
  • Completed by 529 students
  • Takes < 1 Hr. on average
  • Golang

 

Medium
CVE-2022-26xx9
  • This challenge covers a vulnerable snippet in a real Java application
  • Completed by 303 students
  • Takes < 1 Hr. on average
  • Java

 

Hard
CVE-2005-2x8x
  • This challenge covers the review of a CVE and its patch
  • Completed by 316 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 507 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 322 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 174 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 261 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 150 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 117 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 180 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 223 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 150 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 208 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 103 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 271 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 148 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 238 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 218 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 221 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 128 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 114 students
  • Takes 1-2 Hrs. on average
  • Java