HackEDU Lesson Help
This collection contains articles around basic troubleshooting, specific lesson help & common issues
Accessing the Browser ConsoleExplanation of how to open your browser's console on all popular web browsers
Prepared Statements in CA short description on writing prepared statements in C for lessons like SQL injection.
DOM-Based Cross-Site Scripting (XSS)Some additional information on DOM-Based Cross-Site Scripting (XSS) solutions
Coding Test HintsThis article describes the in content help we provide to developers while taking our coding challenges
Python String Formatting and SQL Injection AttacksThis article describes why using prepared statements / parameterized queries are the preferred methods to prevent SQL Injections.
Tips for getting Sandbox OutputThis article describes how you can use Sandbox Output to debug your code.
Using OpenSSL BN Library in COverview on using the big numbers library OpenSSL provides for C
How to check for 500 ErrorsThis article will provide you options for resolving 500 errors during training
How to Generate a .HAR File for DebuggingThis article will outline how to capture and download a .HAR file for debugging
Simplifying Memory Management in CA concise guide to SEI Rule 8
Adopting and Implementing an error-handling policyWhy adopting and implementing a robust error-handling policy is extremely important.
Regex Best PracticesHow to use regex securely
Login Functionality Is Broken Error (Broken Authentication Lesson)This article explains how to resolve when logging into the sandbox app is broken
Logout Functionality Is Broken Error (Broken Authentication Lesson)This article explains how to troubleshoot when the logout functionality in the sandbox is broken
Authentication Search Vulnerability Is Not Fixed (Broken Authentication Lesson)This article provides instructions on how to resolve "authentication search vulnerability is not fixed" error
Search Functionality Is Broken Error (Broken Authentication Lesson)This article provides instructions on how to resolve "search functionality is broken" error
Account Access Vulnerability Is Not Fixed (Broken Authentication Lesson)This article provides instructions on how to resolve "account access vulnerability is not fixed" error
Account Access Functionality Is Broken Error (Broken Authentication Lesson)This article provides instructions on how to resolve "account access functionality is broken" error
Login Functionality Is Broken Error (Broken Access Control Lesson)This article explains how to troubleshoot when logging into the sandbox app is broken
Vulnerability Is Not Fixed (Broken Access Control)This article provides instructions on how to resolve "vulnerability is not fixed" error
Create Post Functionality Is Broken Error (Broken Access Control | Improper Access Control)This article explains how to troubleshoot when creating a post in the sandbox app causes an error.
Vulnerability Is Not Fixed (Broken Access Control | Improper Access Control)This article provides instructions on how to resolve "vulnerability is not fixed" error.
Search Vulnerability Not Fixed (Insufficient Logging Lesson)
Search Functionality Is Broken Error (Insufficient Logging Lesson)
Login Vulnerability Not Fixed (Insufficient Logging Lesson)
Login Vulnerability Not Fixed Correctly (Insufficient Logging Lesson)
Login Failure Functionality Error (Insufficient Logging Lesson)
Internal Server Error (SQL Injection Lesson)This article provides instructions on how to resolve an Internal Server Error
Login Vulnerability Additional Checks Not Fixed Error (SQL Injection Lesson)
Post Vulnerability Not Fixed (XML External Entities Lesson)
Login Vulnerability Not Fixed Error (SQL Injection Lesson)
Login Failure Functionality Error (SQL Injection Lesson)
Login Functionality Error (SQL Injection Lesson)
Post Functionality Is Broken (SQL Injection Lesson)
Special Character Functionality Not Fixed Error (SQL Injection Lesson)
Register/Login Functionality Is Broken (Secure Password Storage Part 1 and Part 2)
Vulnerability Is Not Fixed (Secure Password Storage: Part 1 Lesson)
Vulnerability Is Not Fixed (Secure Password Storage: Part 2 Lesson)
Vulnerability Is Not Fixed (Secure Password Storage: Part 3 Lesson)
Register/Login Functionality Is Broken (Secure Password Storage Part 3)