



Then download it and open it natively in BlueBeam, Adobe Reader X, Adobe Pro, etc. First just click the file name on at the link below, and watch it open in Dropbox Preview with no password. Now I have made the file public as well, so everyone else can try the same. Screenshot (Edge): (uploaded file) -> (preview opens immediately) Screenshot (Chrome): (uploaded file) -> (preview opens immediately) Step 3 Upload the file to dropbox, open it on. Yes, it properly asks for a password, and without it you cannot gain access to the doc. Step 2 Close the PDF, then try to Re-Open it. I do not have Adobe Pro to test that, but perhaps others do. I have posted links and screenshots below to a public-facing test file:įirst off, I'm using BlueBeam as my PDF editor of choice. While it is true that you must be logged into my own account to see the preview, unless I'm missing something this is a flaw in Adobe encryption and possibly in dropbox's preview implementation.Īnyway this is why I am here at /r/netsec to help.

Dropbox's preview tool is somehow bypassing the encryption and displaying the file's contents in your web browser. A week or so ago, I realized that all of my encrypted (open-password protected) PDFs stored on dropbox were not completely secure.
