IDN homograph attack
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The internationalized domain name (IDN) homograph attack is a way a malicious party may deceive computer users about what remote system they are communicating with, by exploiting the fact that many different characters look alike (i.e., they are homographs, hence the term for the attack, although technically homoglyph is the more accurate term for different characters that look alike). For example, a regular user of example.com may be lured to click a link where the Latin character "a" is replaced with the Cyrillic character "а".
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See also
- Internationalized domain name
- Homoglyph, Duplicate characters in Unicode, Unicode equivalence
- Typosquatting
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