Editing COM file (section)

==Malicious usage of the .com extension==
Some computer virus writers have hoped to take advantage of modern computer users' likely lack of knowledge of the {{mono|.com}} file extension and associated binary format, along with their more likely familiarity with the [[.com]] Internet domain name. E-mails have been sent with attachment names similar to "www.example.com". Unwary [[Microsoft Windows]] users clicking on such an attachment would expect to begin browsing a site named <code><nowiki>http://www.example.com/</nowiki></code>, but instead would run the attached binary command file named <code>www.example</code>, giving it full permission to do to their machine whatever its author had in mind.{{Cn|date=May 2023}}

There is nothing malicious about the COM file format itself; this is an exploitation of the coincidental name collision between .com ''com''mand files and .com ''com''mercial web sites.