Although you can change the way a regular HTML document looks using Notepad, you need special software to update a MIME HTML document. MHTs exist because there's an option for saving Internet Explorer ...

It may be possible that in the upcoming future we may see the group behind the Locky ransomware use MHT (MHTML) files as email attachments and deliver their malicious payload to victims' machines.

A file with the MHTML file extension is a Mime HTML archive file. MHTML files are created when the user implements the "Save to Web Page" feature in Microsoft Word. MHTML files include all links, ...

Thus, if you download an infected MHT file, IE will know that it needs to open the MHT file with caution (at “low integrity,” in a sandbox). That severely limits this exploit’s reach. There’s a lot of ...