homograph attack
n.— «Browser makers recently altered the way they handle IDNs, after publicity over a website counterfeiting technique called a homograph attack. Homographs are different characters that appear identical, for example Unicode’s Cyrillic “a” and the ASCII “a” appear the same to users.» —“SSL ‘security’ aiding online fraud” by Matthew Broersma Techworld.com Apr. 12, 2005. (source: Double-Tongued Dictionary)