Code Review Badge

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222 Completed
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84 Videos
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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
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Golang Snippet #01
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 1568 students
  • Takes < 1 Hr. on average

 

Easy
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Golang Snippet #02
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 1291 students
  • Takes < 1 Hr. on average

 

Medium
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Golang Snippet #03
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 1092 students
  • Takes < 1 Hr. on average

 

Easy
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Golang Snippet #04
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 1273 students
  • Takes < 1 Hr. on average

 

Easy
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Golang Snippet #05
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 1160 students
  • Takes < 1 Hr. on average

 

Easy
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Golang Snippet #06
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 1044 students
  • Takes < 1 Hr. on average

 

Easy
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Golang Snippet #07
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 1066 students
  • Takes < 1 Hr. on average

 

Medium
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Golang Snippet #08
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 995 students
  • Takes < 1 Hr. on average

 

Easy
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Golang Snippet #09
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 935 students
  • Takes < 1 Hr. on average

 

Easy
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Golang Snippet #10
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 1041 students
  • Takes < 1 Hr. on average

 

Easy
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Golang Snippet #11
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 1029 students
  • Takes < 1 Hr. on average

 

Medium
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Golang Snippet #12
  • This challenge covers the review of a snippet of code written in Golang
  • 1 video
  • Completed by 926 students
  • Takes < 1 Hr. on average

 

Easy
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PHP Snippet #01
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 2285 students
  • Takes < 1 Hr. on average

 

Medium
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PHP Snippet #02
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1988 students
  • Takes < 1 Hr. on average

 

Easy
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PHP Snippet #03
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1759 students
  • Takes < 1 Hr. on average

 

Medium
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PHP Snippet #04
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1663 students
  • Takes < 1 Hr. on average

 

Medium
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PHP Snippet #05
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1572 students
  • Takes < 1 Hr. on average

 

Easy
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PHP Snippet #06
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1657 students
  • Takes < 1 Hr. on average

 

Easy
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PHP Snippet #07
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1547 students
  • Takes < 1 Hr. on average

 

Hard
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PHP Snippet #08
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1456 students
  • Takes < 1 Hr. on average

 

Medium
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PHP Snippet #09
  • This challenge covers the review of a snippet of code written in PHP
  • 1 video
  • Completed by 1366 students
  • Takes < 1 Hr. on average

 

Easy
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Ruby Snippet #01
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 850 students
  • Takes < 1 Hr. on average

 

Medium
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Ruby Snippet #02
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 944 students
  • Takes < 1 Hr. on average

 

Easy
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Ruby Snippet #03
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 846 students
  • Takes < 1 Hr. on average

 

Medium
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Ruby Snippet #04
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 862 students
  • Takes < 1 Hr. on average

 

Easy
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Ruby Snippet #05
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 939 students
  • Takes < 1 Hr. on average

 

Easy
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Ruby Snippet #06
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 842 students
  • Takes < 1 Hr. on average

 

Easy
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Ruby Snippet #07
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 701 students
  • Takes < 1 Hr. on average

 

Easy
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Ruby Snippet #08
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 747 students
  • Takes < 1 Hr. on average

 

Medium
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Ruby Snippet #09
  • This challenge covers the review of a snippet of code written in Ruby
  • 1 video
  • Completed by 703 students
  • Takes < 1 Hr. on average

 

Medium
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Javascript Snippet #01
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1990 students
  • Takes < 1 Hr. on average

 

Easy
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Javascript Snippet #02
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1670 students
  • Takes < 1 Hr. on average

 

Easy
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Javascript Snippet #03
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1684 students
  • Takes < 1 Hr. on average

 

Medium
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Javascript Snippet #04
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1572 students
  • Takes < 1 Hr. on average

 

Easy
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Javascript Snippet #05
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1630 students
  • Takes < 1 Hr. on average

 

Easy
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Javascript Snippet #06
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1515 students
  • Takes < 1 Hr. on average

 

Medium
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Javascript Snippet #07
  • This challenge covers the review of a snippet of code written in JavaScript
  • 1 video
  • Completed by 1482 students
  • Takes < 1 Hr. on average

 

Easy
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TypeScript Snippet #01
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 1291 students
  • Takes < 1 Hr. on average

 

Easy
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TypeScript Snippet #02
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 1240 students
  • Takes < 1 Hr. on average

 

Medium
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TypeScript Snippet #03
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 1168 students
  • Takes < 1 Hr. on average

 

Easy
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TypeScript Snippet #04
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 1075 students
  • Takes < 1 Hr. on average

 

Medium
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TypeScript Snippet #05
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 1103 students
  • Takes < 1 Hr. on average

 

Easy
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TypeScript Snippet #06
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 968 students
  • Takes < 1 Hr. on average

 

Easy
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TypeScript Snippet #07
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 915 students
  • Takes < 1 Hr. on average

 

Easy
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TypeScript Snippet #08
  • This challenge covers the review of a snippet of code written in TypeScript
  • 1 video
  • Completed by 981 students
  • Takes < 1 Hr. on average

 

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

 

Easy
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Java Snippet #01
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1659 students
  • Takes < 1 Hr. on average

 

Medium
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Java Snippet #02
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1618 students
  • Takes < 1 Hr. on average

 

Easy
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Java Snippet #03
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1466 students
  • Takes < 1 Hr. on average

 

Easy
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Java Snippet #04
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1428 students
  • Takes < 1 Hr. on average

 

Easy
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Java Snippet #05
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1312 students
  • Takes < 1 Hr. on average

 

Medium
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Java Snippet #06
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1232 students
  • Takes < 1 Hr. on average

 

Easy
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Java Snippet #07
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1561 students
  • Takes < 1 Hr. on average

 

Easy
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Java Snippet #08
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1593 students
  • Takes < 1 Hr. on average

 

Medium
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Java Snippet #09
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1215 students
  • Takes < 1 Hr. on average

 

Easy
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Java Snippet #10
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1339 students
  • Takes < 1 Hr. on average

 

Easy
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Java Snippet #11
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1230 students
  • Takes < 1 Hr. on average

 

Easy
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Java Snippet #12
  • This challenge covers the review of a snippet of code written in Java
  • 1 video
  • Completed by 1184 students
  • Takes < 1 Hr. on average

 

Easy
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Python Snippet #01
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 2146 students
  • Takes < 1 Hr. on average

 

Easy
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Python Snippet #02
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1807 students
  • Takes < 1 Hr. on average

 

Easy
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Python Snippet #03
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1637 students
  • Takes < 1 Hr. on average

 

Easy
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Python Snippet #04
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1492 students
  • Takes < 1 Hr. on average

 

Easy
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Python Snippet #05
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1671 students
  • Takes < 1 Hr. on average

 

Easy
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Python Snippet #06
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1613 students
  • Takes < 1 Hr. on average

 

Easy
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Python Snippet #07
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1487 students
  • Takes < 1 Hr. on average

 

Easy
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Python Snippet #08
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1422 students
  • Takes < 1 Hr. on average

 

Easy
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Python Snippet #09
  • This challenge covers the review of a snippet of code written in Python
  • 1 video
  • Completed by 1607 students
  • Takes < 1 Hr. on average

 

Patch Review Exercises

Easy
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CVE-2008-1x3x
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 848 students
  • Takes < 1 Hr. on average
  • PHP

 

Easy
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CVE-2008-4x9x
  • This challenge covers the review of a CVE and its patch
  • Completed by 610 students
  • Takes < 1 Hr. on average
  • PHP

 

Easy
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CVE-2008-5x8x
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 697 students
  • Takes < 1 Hr. on average
  • Ruby

 

Easy
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CVE-2009-3x8x
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 661 students
  • Takes < 1 Hr. on average
  • Ruby

 

Easy
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CVE-2020-17xx7
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 1062 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
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CVE-2020-9x9x
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 829 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
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CVE-2006-4xxx
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 649 students
  • Takes < 1 Hr. on average
  • Ruby

 

Easy
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CVE-2006-4xxx_ii
  • This challenge covers the review of a CVE and its patch
  • Completed by 534 students
  • Takes < 1 Hr. on average
  • Ruby

 

Easy
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CVE-2020-11xxx
  • This challenge covers the review of a CVE and its patch
  • Completed by 640 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
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CVE-2020-17xx8
  • This challenge covers the review of a CVE and its patch
  • Completed by 629 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
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CVE-2021-37xxx
  • This challenge covers the review of a CVE and its patch
  • Completed by 612 students
  • Takes < 1 Hr. on average
  • Python

 

Easy
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CVE-2021-39x3x
  • This challenge covers the review of a CVE and its patch
  • Completed by 519 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
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CVE-2021-4379x
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 630 students
  • Takes < 1 Hr. on average
  • Golang

 

Easy
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CVE-2021-45xx9
  • This challenge covers a vulnerable snippet in a real Python application
  • Completed by 660 students
  • Takes < 1 Hr. on average
  • Python

 

Easy
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CVE-2022-3x7x1
  • This challenge covers the review of a CVE and its patch
  • Completed by 648 students
  • Takes < 1 Hr. on average
  • Java

 

Medium
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CVE-2008-5x8x_ii
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 515 students
  • Takes < 1 Hr. on average
  • Ruby

 

Medium
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CVE-2019-5x2x
  • This challenge covers the review of a CVE and its patch
  • 1 video
  • Completed by 495 students
  • Takes < 1 Hr. on average
  • Ruby

 

Medium
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CVE-2020-13xxx
  • This challenge covers the review of a CVE and its patch
  • Completed by 540 students
  • Takes < 1 Hr. on average
  • Java

 

Medium
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CVE-2021-381xx
  • This challenge covers the review of a CVE and its patch
  • Completed by 552 students
  • Takes < 1 Hr. on average
  • Java

 

Medium
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CVE-2021-4xx50
  • This challenge covers the review of a CVE and its patch
  • Completed by 716 students
  • Takes < 1 Hr. on average
  • Golang

 

Medium
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CVE-2022-26xx9
  • This challenge covers a vulnerable snippet in a real Java application
  • Completed by 500 students
  • Takes < 1 Hr. on average
  • Java

 

Hard
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CVE-2005-2x8x
  • This challenge covers the review of a CVE and its patch
  • Completed by 527 students
  • Takes < 1 Hr. on average
  • PHP

 

Code Review Exercises

Medium
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Code Review 01
  • This exercise is one of our challenges to help you learn how to review real source code
  • 2 videos
  • Completed by 775 students
  • Takes 1-2 Hrs. on average
  • JavaScript

 

Medium
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Code Review 02
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 514 students
  • Takes 1-2 Hrs. on average
  • Python

 

Hard
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Code Review 03
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 350 students
  • Takes 2-4 Hrs. on average
  • JavaScript

 

Hard
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Code Review 04
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 431 students
  • Takes 1-2 Hrs. on average
  • JavaScript

 

Hard
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Code Review 05
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 313 students
  • Takes 2-4 Hrs. on average
  • JavaScript

 

Medium
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Code Review 06
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 279 students
  • Takes 2-4 Hrs. on average
  • Golang

 

Hard
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Code Review 07
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 332 students
  • Takes 1-2 Hrs. on average
  • Golang

 

Easy
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Code Review 08
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 410 students
  • Takes 1-2 Hrs. on average
  • Golang

 

Hard
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Code Review 09
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 304 students
  • Takes 1-2 Hrs. on average
  • Golang

 

Medium
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Code Review 10
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 368 students
  • Takes < 1 Hr. on average
  • Golang

 

Hard
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Code Review 11
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 262 students
  • Takes 2-4 Hrs. on average
  • C#/.Net

 

Medium
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Code Review 12
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 441 students
  • Takes < 1 Hr. on average
  • Java

 

Hard
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Code Review 13
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 316 students
  • Takes 2-4 Hrs. on average
  • Java

 

Medium
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Code Review 14
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 407 students
  • Takes < 1 Hr. on average
  • Java

 

Medium
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Code Review 15
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 383 students
  • Takes < 1 Hr. on average
  • Java

 

Easy
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Code Review 16
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 399 students
  • Takes < 1 Hr. on average
  • Java

 

Medium
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Code Review 17
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 291 students
  • Takes 1-2 Hrs. on average
  • .Net

 

Medium
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Code Review 18
  • This exercise is one of our challenges to help you learn how to review real source code
  • Completed by 277 students
  • Takes 1-2 Hrs. on average
  • Java