I wonder if someone with experience of encryption can help me on this issue please?
I have a spreadsheet file (password protected) which contains client data, and which I synchronise between two pcs using a USB memory stick and some syncing software. The file also links to other spreadsheets in the same folder. My pcs use Windows 10. All works well.
I would like to improve the security of the data by encrypting the file (and perhaps the others?) properly. However, I still want to be able to synchronise it to the other pc using the USB memory stick. And I don’t want anything that will slow down the use of the file, which is pretty large (12MB).
I wonder if anyone can recommend an encryption utility that will fit the bill please?
Many thanks.