 I didn't follow the number one rule of cyber security and I blame Google. That rule is don't open attachments. But I needed to. A customer sent over specs on an Excel file and I couldn't advise him without opening that file. So I let Google take the hit for me. Transfer the file to your Google Drive, then open it through Google Sheets. As long as you don't open the file locally on your computer, you are safe. You get the info you need and I'm sure Google will be fine.