To password protect a PDF in Adobe Acrobat Reader, you'll need the paid Pro version, which starts at $14.99 a month.
To change the default PDF viewer on Windows 10, you'll need to edit your default apps in the Control Panel.
If you need to run Windows apps on Linux, Winboat is inching ever-closer to full release and will make your life considerably easier.
You have to file a claim by next month to receive a payment from AT&T's $177 million privacy settlement. Peter is a writer and editor for the CNET How-To team. He has been covering technology, ...