I use AxCrypt 2 (free, yet :) to secure some sensitive files on my local PC. If, for example I secure a file and decrypt it, it gets opened by the associated appliaction like Notepad or so. When I secure for example JPG, then it gets opened by Win10 native photo viewer app – so far so good. However here is my concern: each such application can swap the decrypted file on local disk and in that moment I guess there is not any security as AxCrypt only takes care about its own temp files (if any).
Would you have some recomandation for example, how to completelly avoid such risk? Like for example, by recomandation of any JPG file viewer which definitely doesn’t use any local temp files? Is there anything else which can be done against this problem?
Thanks a lot Zdenek