Homoglyph Attacks: How Lookalike Characters Are Exploited for Cyber Deception

Homoglyph Attacks: How Lookalike Characters Are Exploited for Cyber Deception

Introduction

Homoglyph attacks leverage the visual similarity of characters from different scripts to deceive users and bypass security measures. These attacks exploit Unicode complexity and human perception, making them a significant threat in phishing and other cyber deception tactics.

Reconnaissance & Branding

1. Reconnaissance: Attackers gather brand names, common subdomains, and localized scripts used by the target.
2. Branding: They craft believable impersonation targets using open-source intelligence (OSINT).

Domain Preparation

1. Domain Registration: Homoglyph domains are registered via registrars that accept Internationalized Domain Names (IDNs).
2. TLS Certificates: Optionally, attackers obtain TLS certificates to add legitimacy.

Hosting & Content

1. Hosting Setup: Phishing pages, download portals, or redirect flows are set up.
2. Email Templates: Email templates pointing to the homoglyph domain are configured.

Delivery

1. Delivery Mechanisms: Emails, ads, or social messages linking to the deceptive domain are sent out.
2. Trust Cues: Exploiting typical trust cues like logos and similar

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