Squatters are persons or organizations who register Internet domains with slight typographic modifications, in the hope that users will mistype and accidentally land on these websites (e.g., www.melani.admim.ch instead of www.melani.admin.ch). This can be used to place advertisements on these sites, but also to distribute malware. The term is also applied to persons who register unused, attractive domains in the hope of reselling them later on.

Source: Information Assurance Situation in Switzerland and Internationally, Reporting and Analysis Centre for Information Assurance MELANI, https://www.newsd.admin.ch/newsd/message/attachments/11945.pdf