LEARNING OBJECTIVES ⌵
- Understand the mechanics of Clickjacking (UI Redressing) attacks.
- Learn how transparent
<iframe>overlays trick authenticated users into clicking sensitive buttons. - Examine real-world Clickjacking attack vectors: Likejacking, 1-click purchases, account deletions.
- Master historical JS frame-busting scripts vs modern browser-level HTTP defenses.
🎬 INTERACTIVE VISUAL PIPELINE
Core Architecture Simulation
1. Input
Directives & Tags
2. Parse
Tokenizer & AST
3. Layout
Box Model & Flow
4. Render
GPU Paint & Composite
PHASE 1: INPUT & DIRECTIVES
Browser receives declarative markup stream, parsing tag tokens and initializing component state.
📖 The Anatomy of a Clickjacking Attack
An attacker builds a game or survey page with an enticing button ("Click here to win a free iPhone!").
In the background, the attacker embeds your banking or social media settings page inside an <iframe> positioned directly above the button, set to CSS opacity: 0.0001 (invisible). When the user clicks the "Win iPhone" button, their physical click lands directly on the invisible "Transfer All Funds" or "Delete Account" button inside the authenticated iframe!
+--------------------------------------------------------------+
| ATTACKER WEBPAGE (https://evil.com) |
| |
| Visible UI: [ 🎁 Click to Claim $1,000 Prize! ] |
| |
| Invisible Iframe (opacity: 0, z-index: 9999): |
| https://bank.com/settings/transfer-all-funds |
| [ 💸 Confirm Transfer ] <--- Physical click lands here! 🚨|
+--------------------------------------------------------------+
📌 Key Takeaways
- Clickjacking exploits a logged-in user's authenticated session by masking sensitive action buttons under transparent iframe layers.
- JavaScript-based frame-busting scripts (
if (top !== self) ...) can be bypassed bysandbox="allow-forms"and should never be used instead of HTTP headers. - --
❓ Knowledge Check
1. Which of the following is correct?
2. Which of the following is correct?