What is the IDN Homograph Attack and how does it work?

by | Sep 26, 2019 | CCNA, CCNP, CompTIA, Data Security, End Point Protection, Exclusive Articles, Malware Prevention, Most Common Vulnerabilities, Online Banking Security, Phishing

IDN Spoofing

We often use IDN or Internationalized Domain Name to include language-specific scripts in a domain name. This enables us to use Chinese, Arabic, Devanagari, Hebrew, French, or other non-English characters in a domain name. But, attackers often exploit these IDNs for the purpose of phishing or other cyber attacks. IDN homograph attack is an attack in which attackers use a similar-looking but different character in an internationalized domain name to deceive victims and exploit that for the purpose of phishing or other cybercrimes.


In this article, we will discuss:

  • What is IDN or Internationalized Domain Name?

  • What is the IDN Homograph attack, and how does it work?

  • How is IDN Homograph Attack different from Typosquatting?

  • How to prevent IDN Homograph attacks?

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Amrita Mitra

Author

Ms. Amrita Mitra is an author, who has authored the books “Cryptography And Public Key Infrastructure“, “Web Application Vulnerabilities And Prevention“, “A Guide To Cyber Security” and “Phishing: Detection, Analysis And Prevention“. She is also the founder of Asigosec Technologies, the company that owns The Security Buddy.

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