For security and encryption information, you can go to https://dochub.com/site/security and also view our article below:
How secure is DocHub to use?
By default, all files and documents you upload to DocHub and open can only be seen by you unless you change the document's privacy setting to public or share it with someone else for signing or viewing or collaborating on a PDF.
Who can see the documents I upload?
Your privacy is our top priority, so your documents and any data within them will always be completely private and secure unless you explicitly choose to share your documents as explained in this article:
How do I share or download my edited PDF?