Typosquatting, also called URL hijacking, a sting site, a cousin domain, or a fake URL, is a form of cybersquatting, and possibly brandjacking which relies on mistakes such as typos made by Internet users when inputting a website address into a web browser. Should a user accidentally enter an incorrect website address, they may be led to any URL (including an alternative website owned by a cybersquatter).
The typosquatter's URL will usually be one of five kinds, all similar to the victim site address:
A common misspelling, or foreign language spelling, of the intended site
A misspelling based on a typographical error
A plural of a singular domain name
A different top-level domain: (e.g. .com instead of .org)
An abuse of the Country Code Top-Level Domain (ccTLD) (.cm, .co, or .om instead of .com)Similar abuses:
Combosquatting - no misspelling, but appending an arbitrary word that appears legitimate, but that anyone could register.
Doppelganger domain - omitting a period or inserting an extra period
Appending terms such as sucks or -...