Conversation

So mom got scammed. She was watching Amazon Prime on her TV and got a pop-up that she needed to install a viewer to watch a certain movie, and a QR code to scan. QR asked her to sign up for a free account with a credit card.

Her credit card company blocked the charge and called her.

Someone hacked into her TV or Amazon sent malvertisement.

What should we do? Reset to factory defaults and change passwords? What about the phone she scanned the QR code with? WiFi router?