"Our tests also revealed that most video doorbells lack two-factor authentication, a widely used security feature that sends users a temporary, onetime passcode typically via text message, email, phone, or mobile app to use in addition to their password for logging into their accounts.

A new study by Consumer Reports studied 24 different popular smart doorbell brands, and found substantial security problems with at least five of the models. Many of these flaws exposed user account information, WiFi network information, or, even in some cases, user passwords. Consumer Reports avoids getting too specific as to avoid advertising the flaws while vendors try to fix them