Code Review Badge

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210 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 1544 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 1270 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 1075 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 1259 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 1141 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 1023 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 1045 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 981 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 923 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 1025 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 1014 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 912 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 2259 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 1962 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 1734 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 1641 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 1549 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 1635 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 1522 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 1433 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 1342 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 837 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 934 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 833 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 850 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 923 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 825 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 684 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 731 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 686 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 1964 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 1645 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 1659 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 1546 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 1603 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 1486 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 1455 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 1267 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 1217 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 1146 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 1054 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 1081 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 947 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 897 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 962 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 995 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 1634 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 1596 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 1442 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 1403 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 1290 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 1210 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 1538 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 1566 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 1193 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 1319 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 1213 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 1168 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 2118 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 1774 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 1611 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 1468 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 1646 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 1590 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 1466 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 1398 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 1584 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 820 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 584 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 679 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 641 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 1037 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 807 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 630 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 519 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 625 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 615 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 595 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 506 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 614 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 646 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 633 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 497 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 478 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 523 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 537 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 704 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 486 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 511 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 755 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 504 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 336 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 418 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 301 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 271 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 323 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 398 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 293 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 360 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 250 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 431 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 305 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 397 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 375 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 390 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 281 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 269 students
  • Takes 1-2 Hrs. on average
  • Java