Code Review Badge

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227 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 1580 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 1302 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 1101 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 1280 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 1170 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 1056 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 1077 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 1006 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 947 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 1054 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 1042 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 938 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 2302 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 2001 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 1773 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 1675 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 1584 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 1670 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 1559 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 1467 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 1377 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 861 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 953 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 855 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 871 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 947 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 850 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 709 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 753 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 712 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 2004 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 1681 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 1694 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 1584 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 1642 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 1523 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 1490 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 1303 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 1252 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 1179 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 1086 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 1114 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 980 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 927 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 991 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 1025 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 1672 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 1629 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 1476 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 1441 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 1323 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 1240 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 1571 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 1603 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 1223 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 1349 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 1239 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 1193 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 2159 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 1818 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 1647 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 1506 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 1682 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 1625 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 1498 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 1432 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 1618 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 861 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 620 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 705 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 670 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 1070 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 836 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 655 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 540 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 644 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 631 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 617 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 524 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 633 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 663 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 651 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 518 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 497 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 542 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 554 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 718 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 503 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 780 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 519 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 354 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 434 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 316 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 282 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 335 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 414 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 307 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 374 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 265 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 447 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 319 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 412 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 388 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 403 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 296 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 282 students
  • Takes 1-2 Hrs. on average
  • Java