Push notifications: a subtle, but dangerous privacy exposure. Learn how to reduce your risk.

Push notifications aren't very private or secure. Their metadata can be used to de-anonymize you, and the content is exposed to Google, Apple and potentially other third parties.

Push notifications on your device have been on my radar as a privacy risk for some time. In my various posts discussing device and App privacy, I recommend disabling push notifications on the lock screen (here’s my guide to locking down your device) to protect yourself from shoulder surfers or exposing data from a locked phone not in your control.

Anothe…