312-39 Cyber Threats Iocs And Attack Methodology Practice Question
A user complains that their browser homepage has changed. Upon inspection, you find a new, unsigned extension installed. Which attack methodology is this?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Browser Hijacking
Installing unauthorized browser extensions is a common technique for persistence and data theft (browser hijacking).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Man-in-the-Middle (MitM)
Why it's wrong here
MitM intercepts traffic, not browser settings.
- ✗
Cross-Site Scripting (XSS)
Why it's wrong here
XSS targets web application vulnerabilities.
- ✗
SQL Injection
Why it's wrong here
SQLi targets database backends.
- ✓
Browser Hijacking
Why this is correct
Modifying browser settings via extensions is browser hijacking.
About these practice questions
Courseiva writes every 312-39 question from scratch — 202 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official EC-Council exam blueprint
This 312-39 practice question is part of Courseiva's free EC-Council certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 312-39 exam.