You can do crazy shit in excel. After someone opens an excel sheet - download a webpage and save it to disk? no problem. Lets load other excel files in memory and run their scripts too! Don't worry about your computer fan - while we scan your disk for stuff. Just state "On Error Resume Next" and start scanning hardware. Company email accounts are stuffed with one off sketchy excel attachments.

https://stackoverflow.com/questions/27419804/vba-excel-downl...