Code Review Badge

The Code Review Badge is our badge on code review. It covers the discovery of weaknesses and vulnerabilities using source code review.

Want the methodology behind these labs? The on-demand Web Security Code Review Training walks you through real code, real CVEs and the methodology used on every review, in 107 short lessons.

107 exercises 365 completed 84 videos

Introduction Videos

Access to videos for this badge is only available with PentesterLab PRO

Snippet Review Exercises

Golang Snippet #01

This challenge covers the review of a snippet of code written in Golang
1 video
Completed by 1911 students
Takes < 1 Hr. on average

Golang Snippet #02

This challenge covers the review of a snippet of code written in Golang
1 video
Completed by 1597 students
Takes < 1 Hr. on average

Golang Snippet #03

This challenge covers the review of a snippet of code written in Golang
1 video
Completed by 1344 students
Takes < 1 Hr. on average

Golang Snippet #04

This challenge covers the review of a snippet of code written in Golang
1 video
Completed by 1523 students
Takes < 1 Hr. on average

Golang Snippet #05

This challenge covers the review of a snippet of code written in Golang
1 video
Completed by 1437 students
Takes < 1 Hr. on average

Golang Snippet #06

This challenge covers the review of a snippet of code written in Golang
1 video
Completed by 1305 students
Takes < 1 Hr. on average

Golang Snippet #07

This challenge covers the review of a snippet of code written in Golang
1 video
Completed by 1320 students
Takes < 1 Hr. on average

Golang Snippet #08

This challenge covers the review of a snippet of code written in Golang
1 video
Completed by 1228 students
Takes < 1 Hr. on average

Golang Snippet #09

This challenge covers the review of a snippet of code written in Golang
1 video
Completed by 1171 students
Takes < 1 Hr. on average

Golang Snippet #10

This challenge covers the review of a snippet of code written in Golang
1 video
Completed by 1293 students
Takes < 1 Hr. on average

Golang Snippet #11

This challenge covers the review of a snippet of code written in Golang
1 video
Completed by 1277 students
Takes < 1 Hr. on average

Golang Snippet #12

This challenge covers the review of a snippet of code written in Golang
1 video
Completed by 1156 students
Takes < 1 Hr. on average

PHP Snippet #01

This challenge covers the review of a snippet of code written in PHP
1 video
Completed by 2646 students
Takes < 1 Hr. on average

PHP Snippet #02

This challenge covers the review of a snippet of code written in PHP
1 video
Completed by 2316 students
Takes < 1 Hr. on average

PHP Snippet #03

This challenge covers the review of a snippet of code written in PHP
1 video
Completed by 2090 students
Takes < 1 Hr. on average

PHP Snippet #04

This challenge covers the review of a snippet of code written in PHP
1 video
Completed by 1963 students
Takes < 1 Hr. on average

PHP Snippet #05

This challenge covers the review of a snippet of code written in PHP
1 video
Completed by 1867 students
Takes < 1 Hr. on average

PHP Snippet #06

This challenge covers the review of a snippet of code written in PHP
1 video
Completed by 1966 students
Takes < 1 Hr. on average

PHP Snippet #07

This challenge covers the review of a snippet of code written in PHP
1 video
Completed by 1857 students
Takes < 1 Hr. on average

PHP Snippet #08

This challenge covers the review of a snippet of code written in PHP
1 video
Completed by 1744 students
Takes < 1 Hr. on average

PHP Snippet #09

This challenge covers the review of a snippet of code written in PHP
1 video
Completed by 1644 students
Takes < 1 Hr. on average

Ruby Snippet #01

This challenge covers the review of a snippet of code written in Ruby
1 video
Completed by 1084 students
Takes < 1 Hr. on average

Ruby Snippet #02

This challenge covers the review of a snippet of code written in Ruby
1 video
Completed by 1163 students
Takes < 1 Hr. on average

Ruby Snippet #03

This challenge covers the review of a snippet of code written in Ruby
1 video
Completed by 1067 students
Takes < 1 Hr. on average

Ruby Snippet #04

This challenge covers the review of a snippet of code written in Ruby
1 video
Completed by 1075 students
Takes < 1 Hr. on average

Ruby Snippet #05

This challenge covers the review of a snippet of code written in Ruby
1 video
Completed by 1159 students
Takes < 1 Hr. on average

Ruby Snippet #06

This challenge covers the review of a snippet of code written in Ruby
1 video
Completed by 1061 students
Takes < 1 Hr. on average

Ruby Snippet #07

This challenge covers the review of a snippet of code written in Ruby
1 video
Completed by 916 students
Takes < 1 Hr. on average

Ruby Snippet #08

This challenge covers the review of a snippet of code written in Ruby
1 video
Completed by 956 students
Takes < 1 Hr. on average

Ruby Snippet #09

This challenge covers the review of a snippet of code written in Ruby
1 video
Completed by 909 students
Takes < 1 Hr. on average

Javascript Snippet #01

This challenge covers the review of a snippet of code written in JavaScript
1 video
Completed by 2336 students
Takes < 1 Hr. on average

Javascript Snippet #02

This challenge covers the review of a snippet of code written in JavaScript
1 video
Completed by 2025 students
Takes < 1 Hr. on average

Javascript Snippet #03

This challenge covers the review of a snippet of code written in JavaScript
1 video
Completed by 2028 students
Takes < 1 Hr. on average

Javascript Snippet #04

This challenge covers the review of a snippet of code written in JavaScript
1 video
Completed by 1889 students
Takes < 1 Hr. on average

Javascript Snippet #05

This challenge covers the review of a snippet of code written in JavaScript
1 video
Completed by 1983 students
Takes < 1 Hr. on average

Javascript Snippet #06

This challenge covers the review of a snippet of code written in JavaScript
1 video
Completed by 1849 students
Takes < 1 Hr. on average

Javascript Snippet #07

This challenge covers the review of a snippet of code written in JavaScript
1 video
Completed by 1806 students
Takes < 1 Hr. on average

TypeScript Snippet #01

This challenge covers the review of a snippet of code written in TypeScript
1 video
Completed by 1600 students
Takes < 1 Hr. on average

TypeScript Snippet #02

This challenge covers the review of a snippet of code written in TypeScript
1 video
Completed by 1565 students
Takes < 1 Hr. on average

TypeScript Snippet #03

This challenge covers the review of a snippet of code written in TypeScript
1 video
Completed by 1435 students
Takes < 1 Hr. on average

TypeScript Snippet #04

This challenge covers the review of a snippet of code written in TypeScript
1 video
Completed by 1352 students
Takes < 1 Hr. on average

TypeScript Snippet #05

This challenge covers the review of a snippet of code written in TypeScript
1 video
Completed by 1380 students
Takes < 1 Hr. on average

TypeScript Snippet #06

This challenge covers the review of a snippet of code written in TypeScript
1 video
Completed by 1239 students
Takes < 1 Hr. on average

TypeScript Snippet #07

This challenge covers the review of a snippet of code written in TypeScript
1 video
Completed by 1183 students
Takes < 1 Hr. on average

TypeScript Snippet #08

This challenge covers the review of a snippet of code written in TypeScript
1 video
Completed by 1249 students
Takes < 1 Hr. on average

TypeScript Snippet #09

This challenge covers the review of a snippet of code written in TypeScript
1 video
Completed by 1288 students
Takes < 1 Hr. on average

Java Snippet #01

This challenge covers the review of a snippet of code written in Java
1 video
Completed by 1969 students
Takes < 1 Hr. on average

Java Snippet #02

This challenge covers the review of a snippet of code written in Java
1 video
Completed by 1906 students
Takes < 1 Hr. on average

Java Snippet #03

This challenge covers the review of a snippet of code written in Java
1 video
Completed by 1763 students
Takes < 1 Hr. on average

Java Snippet #04

This challenge covers the review of a snippet of code written in Java
1 video
Completed by 1769 students
Takes < 1 Hr. on average

Java Snippet #05

This challenge covers the review of a snippet of code written in Java
1 video
Completed by 1596 students
Takes < 1 Hr. on average

Java Snippet #06

This challenge covers the review of a snippet of code written in Java
1 video
Completed by 1484 students
Takes < 1 Hr. on average

Java Snippet #07

This challenge covers the review of a snippet of code written in Java
1 video
Completed by 1831 students
Takes < 1 Hr. on average

Java Snippet #08

This challenge covers the review of a snippet of code written in Java
1 video
Completed by 1845 students
Takes < 1 Hr. on average

Java Snippet #09

This challenge covers the review of a snippet of code written in Java
1 video
Completed by 1462 students
Takes < 1 Hr. on average

Java Snippet #10

This challenge covers the review of a snippet of code written in Java
1 video
Completed by 1600 students
Takes < 1 Hr. on average

Java Snippet #11

This challenge covers the review of a snippet of code written in Java
1 video
Completed by 1499 students
Takes < 1 Hr. on average

Java Snippet #12

This challenge covers the review of a snippet of code written in Java
1 video
Completed by 1456 students
Takes < 1 Hr. on average

Python Snippet #01

This challenge covers the review of a snippet of code written in Python
1 video
Completed by 2494 students
Takes < 1 Hr. on average

Python Snippet #02

This challenge covers the review of a snippet of code written in Python
1 video
Completed by 2179 students
Takes < 1 Hr. on average

Python Snippet #03

This challenge covers the review of a snippet of code written in Python
1 video
Completed by 1996 students
Takes < 1 Hr. on average

Python Snippet #04

This challenge covers the review of a snippet of code written in Python
1 video
Completed by 1841 students
Takes < 1 Hr. on average

Python Snippet #05

This challenge covers the review of a snippet of code written in Python
1 video
Completed by 2043 students
Takes < 1 Hr. on average

Python Snippet #06

This challenge covers the review of a snippet of code written in Python
1 video
Completed by 1933 students
Takes < 1 Hr. on average

Python Snippet #07

This challenge covers the review of a snippet of code written in Python
1 video
Completed by 1796 students
Takes < 1 Hr. on average

Python Snippet #08

This challenge covers the review of a snippet of code written in Python
1 video
Completed by 1706 students
Takes < 1 Hr. on average

Python Snippet #09

This challenge covers the review of a snippet of code written in Python
1 video
Completed by 1955 students
Takes < 1 Hr. on average

Patch Review Exercises

This challenge covers the review of a CVE and its patch
1 video
Completed by 1086 students
Takes < 1 Hr. on average
PHP

This challenge covers the review of a CVE and its patch
Completed by 818 students
Takes < 1 Hr. on average
PHP

This challenge covers the review of a CVE and its patch
1 video
Completed by 907 students
Takes < 1 Hr. on average
Ruby

This challenge covers the review of a CVE and its patch
1 video
Completed by 862 students
Takes < 1 Hr. on average
Ruby

This challenge covers the review of a CVE and its patch
1 video
Completed by 1341 students
Takes < 1 Hr. on average
Java

This challenge covers the review of a CVE and its patch
1 video
Completed by 1061 students
Takes < 1 Hr. on average
Java

This challenge covers the review of a CVE and its patch
1 video
Completed by 839 students
Takes < 1 Hr. on average
Ruby

CVE-2006-4xxx_ii

This challenge covers the review of a CVE and its patch
Completed by 721 students
Takes < 1 Hr. on average
Ruby

This challenge covers the review of a CVE and its patch
Completed by 832 students
Takes < 1 Hr. on average
Java

This challenge covers the review of a CVE and its patch
Completed by 811 students
Takes < 1 Hr. on average
Java

This challenge covers the review of a CVE and its patch
Completed by 845 students
Takes < 1 Hr. on average
Python

This challenge covers the review of a CVE and its patch
Completed by 709 students
Takes < 1 Hr. on average
Java

This challenge covers the review of a CVE and its patch
1 video
Completed by 809 students
Takes < 1 Hr. on average
Golang

This challenge covers a vulnerable snippet in a real Python application
Completed by 841 students
Takes < 1 Hr. on average
Python

This challenge covers the review of a CVE and its patch
Completed by 834 students
Takes < 1 Hr. on average
Java

CVE-2008-5x8x_ii

This challenge covers the review of a CVE and its patch
1 video
Completed by 702 students
Takes < 1 Hr. on average
Ruby

This challenge covers the review of a CVE and its patch
1 video
Completed by 669 students
Takes < 1 Hr. on average
Ruby

This challenge covers the review of a CVE and its patch
Completed by 736 students
Takes < 1 Hr. on average
Java

This challenge covers the review of a CVE and its patch
Completed by 738 students
Takes < 1 Hr. on average
Java

This challenge covers the review of a CVE and its patch
Completed by 893 students
Takes < 1 Hr. on average
Golang

This challenge covers a vulnerable snippet in a real Java application
Completed by 685 students
Takes < 1 Hr. on average
Java

This challenge covers the review of a CVE and its patch
Completed by 704 students
Takes < 1 Hr. on average
PHP

Code Review Exercises

This exercise is one of our challenges to help you learn how to review real source code
2 videos
Completed by 986 students
Takes < 1 Hr. on average
JavaScript

This exercise is one of our challenges to help you learn how to review real source code
Completed by 721 students
Takes < 1 Hr. on average
Python

This exercise is one of our challenges to help you learn how to review real source code
Completed by 537 students
Takes < 1 Hr. on average
JavaScript

This exercise is one of our challenges to help you learn how to review real source code
Completed by 619 students
Takes < 1 Hr. on average
JavaScript

This exercise is one of our challenges to help you learn how to review real source code
Completed by 495 students
Takes < 1 Hr. on average
JavaScript

This exercise is one of our challenges to help you learn how to review real source code
Completed by 439 students
Takes < 1 Hr. on average
Golang

This exercise is one of our challenges to help you learn how to review real source code
Completed by 495 students
Takes < 1 Hr. on average
Golang

This exercise is one of our challenges to help you learn how to review real source code
Completed by 586 students
Takes < 1 Hr. on average
Golang

This exercise is one of our challenges to help you learn how to review real source code
Completed by 474 students
Takes < 1 Hr. on average
Golang

This exercise is one of our challenges to help you learn how to review real source code
Completed by 533 students
Takes < 1 Hr. on average
Golang

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
C#/.Net

This exercise is one of our challenges to help you learn how to review real source code
Completed by 612 students
Takes < 1 Hr. on average
Java

This exercise is one of our challenges to help you learn how to review real source code
Completed by 487 students
Takes < 1 Hr. on average
Java

This exercise is one of our challenges to help you learn how to review real source code
Completed by 573 students
Takes < 1 Hr. on average
Java

This exercise is one of our challenges to help you learn how to review real source code
Completed by 545 students
Takes < 1 Hr. on average
Java

This exercise is one of our challenges to help you learn how to review real source code
Completed by 577 students
Takes < 1 Hr. on average
Java

This exercise is one of our challenges to help you learn how to review real source code
Completed by 453 students
Takes < 1 Hr. on average
.Net

This exercise is one of our challenges to help you learn how to review real source code
Completed by 440 students
Takes < 1 Hr. on average
Java