Typosquatting is also called URL hijacking. It is a form of cybersquatting which relies on mistakes such as typographical errors made by Internet users when inputting a website address into a web browser.
Typosquatting is commonly used by hackers in phishing attacks to steal credentials for legitimate business websites by misdirecting users to clicking on look-alike domains, landing on an identically formatted website, and providing the hackers your login credentials which they steal.
For example: K-M-A-R-T.com could be typosquatted by someone who registers the domain K-R-N-A-R-T.com
When viewed this way the similarity is striking: Kmart.com and Krnart.com