Code Review Badge

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217 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 1554 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 1277 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 1082 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 1264 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 1149 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 1031 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 1055 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 989 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 930 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 1034 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 1023 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 919 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 2275 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 1975 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 1751 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 1654 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 1562 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 1646 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 1536 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 1447 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 1356 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 844 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 940 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 840 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 855 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 931 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 834 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 691 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 740 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 694 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 1979 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 1656 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 1671 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 1562 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 1614 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 1499 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 1469 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 1281 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 1229 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 1159 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 1066 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 1094 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 959 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 907 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 974 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 1007 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 1648 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 1610 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 1457 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 1417 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 1302 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 1222 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 1552 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 1579 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 1206 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 1331 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 1224 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 1178 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 2132 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 1792 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 1627 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 1478 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 1661 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 1603 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 1480 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 1409 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 1599 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 834 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 599 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 687 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 649 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 1050 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 820 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 641 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 527 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 633 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 623 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 604 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 513 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 623 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 654 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 641 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 506 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 487 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 532 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 544 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 710 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 492 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 519 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 762 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 509 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 343 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 427 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 308 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 276 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 329 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 406 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 300 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 366 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 258 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 437 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 313 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 404 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 381 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 396 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 288 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 275 students
  • Takes 1-2 Hrs. on average
  • Java