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4 Ways to Password-Protect a PDF File on Windows 11

If you have a confidential PDF you want to password protect, you have a few ways to do that on your Windows 11 PC. You can ...
ZDNet

New PDFex attack can exfiltrate data from encrypted PDF files

German academics have developed a new attack that can extract and steal data from encrypted PDF files, sometimes without user interaction. Named PDFex, the new attack comes in two variations and was ...