Sometimes I have to download some word or excel documents from incredible sites. I need not only to read but also to edit them. I heard that Microsoft Office suite is a very popular attack vector. Although I patch my windows and office regularly I guess there must be many 0day vulnerabilities in them. In order to mitigate the risk, after downloading a word document, I would upload it to the Google Docs, make some small changes and download it with a different format (for example, if the original file is a *.doc file then I would download it as a *.docx file and vise versa). I guess such conversion may "sanitize" (or at least break) the malicious code (if any) in the suspicious file but I am not sure whether it does work.
So, does anyone know whether it works?