 If you have a PDF document that contains sensitive or confidential information, the most effective way to prevent unauthorized access is by password protecting your PDF. Thankfully, there are several software options available that allow you to easily encrypt your PDFs with a password. Once the software is a Sustake PDF Editor, open your PDF file in the Sustake PDF Editor, select the secure option from the menu, click on Protect and set your desired password. Save the document. Once you have set a password for your PDF, every time you attempt to open it, you will be prompted to enter the password for access. I hope you find this information helpful. If you have any further questions, feel free to ask. Also, like, share and subscribe for more such useful content.