Encrypted Sextortion PDFs, (Mon, Sep 16th)
We’ve written about sextortion emails several times. Reader Jason submitted another variant: password protected PDFs with a sextortion message (including QR code for the BTC address). This gives me the opportunity to discuss some interesting aspects of encrypted PDFs. PDFs can be encrypted for 2 main purposes: confidentiality and “Digital Rights Management” (DRM). When a …