Update README.md

Secure devices

README.md

@@ -13,6 +13,7 @@ We believe Internet of Things devices should all come with a well established ex
 * Users can delete or back up data collected by Internet of Things devices.
 * Let us take responsibility together for building systems that are easier to use for good and harder to use maliciously
 * Devices that are always listening have a physical OFF and ON switch that clearly indicates to the user if and when they're listening. For example, a good practice could include a physical OFF and ON switch, which breaks one of the power lines coming into the recording component, with an indicator LED powered and controlled only by the power line, that clearly indicates to the user when the devices is and isn't listening. Services/devices and API usage of such services/devices, including, for example, Amazon Alexa, Apple Siri, Google Home, and others should clearly indicate when they are ON and listening and OFF and are not.
+* A reasonable attempt should be made to secure devices to prevent data from falling into the wrong hands.
 
 If you'd like to contribute to this living document, please fork this repo and submit [a pull request][4] with any additions or modifications. Once it's in a pretty solid place we'll ask other companies that make "Internet of Things" devices to sign on.