Code Review Badge

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238 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 1610 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 1321 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 1116 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 1302 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 1194 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 1077 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 1096 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 1021 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 966 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 1073 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 1063 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 953 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 2329 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 2025 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 1797 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 1695 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 1605 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 1691 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 1581 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 1487 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 1396 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 880 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 970 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 871 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 885 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 964 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 866 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 725 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 770 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 727 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 2043 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 1724 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 1734 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 1621 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 1680 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 1559 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 1524 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 1329 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 1275 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 1200 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 1108 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 1137 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 1001 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 950 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 1019 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 1048 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 1704 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 1653 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 1504 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 1468 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 1349 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 1267 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 1599 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 1624 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 1250 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 1372 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 1264 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 1219 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 2192 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 1849 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 1674 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 1534 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 1710 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 1652 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 1524 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 1453 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 1644 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 875 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 629 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 720 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 683 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 1093 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 849 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 667 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 551 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 655 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 643 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 628 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 537 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 644 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 676 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 666 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 533 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 509 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 556 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 567 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 732 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 518 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 541 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 798 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 533 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 365 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 446 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 328 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 294 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 346 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 427 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 318 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 385 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 278 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 461 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 333 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 425 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 402 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 420 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 307 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 292 students
  • Takes 1-2 Hrs. on average
  • Java