The question asks which attack is NOT a method to steal data from the connection between a web application and an IoT endpoint. SQL Injection (SQLi), Cross-Site Scripting (XSS), and Cross-Site Request Forgery (CSRF) are all viable attack vectors against a web application. SQLi and XSS are direct methods for data exfiltration from the database and user's browser, respectively. CSRF can be used to trick an authenticated user's browser into performing an action that sends data to an attacker.

LDAP Injection, however, is a highly specific attack that targets applications using an LDAP (Lightweight Directory Access Protocol) server for directory services, primarily user authentication and information. The transactional data exchanged between a web application and an IoT endpoint is typically stored in a relational (SQL) or NoSQL database, not an LDAP directory. Therefore, an LDAP Injection attack would not be a relevant method for stealing this specific data.

A. Cross-Site Request Forgery (CSRF): This attack can force a user's browser to execute a request that sends data to an attacker-controlled location, thus facilitating data theft.

B. SQL Injection (SQLi): This is a primary and highly effective method for attacking the application's backend database to read, modify, or exfiltrate sensitive data.

C. Cross-Site Scripting (XSS): This attack injects malicious scripts into the web application, which can then be used to steal user session cookies, credentials, or other sensitive data from the user's browser.

1. OWASP Foundation

"LDAP Injection Prevention Cheat Sheet." This document specifies that LDAP injection targets applications that use LDAP queries. It states

"LDAP injection is an attack used to exploit web applications that construct LDAP statements from user input." This highlights its specificity to LDAP backends

which are distinct from the typical databases used for application data. (Reference: OWASP LDAP Injection Prevention Cheat Sheet

Introduction section).

2. OWASP Foundation

"Cross-Site Request Forgery (CSRF) Prevention Cheat Sheet." This resource describes CSRF as an attack that "forces an end user to execute unwanted actions." While primarily for performing actions

a crafted request can cause data to be sent to an attacker

making it a method to facilitate data theft. (Reference: OWASP Cross-Site Request Forgery (CSRF) Prevention Cheat Sheet

Introduction section).

3. Martin

M.

et al. (2012). 6.858 Computer Systems Security

Fall 2014. Massachusetts Institute of Technology: MIT OpenCourseWare. Lecture 13

"Web Security

" details how SQL Injection and Cross-Site Scripting are used to exfiltrate data from databases and user sessions

respectively. It establishes them as common data theft vectors in web applications. (Reference: MIT OCW

6.858

Fall 2014

Lecture 13 Notes

Sections 3 & 4).