Google's Support page on Wifi assistant:<p><a href="https://support.google.com/nexus/answer/6327199?hl=en" rel="nofollow">https://support.google.com/nexus/answer/6327199?hl=en</a><p><pre><code> To make open Wi-Fi networks safer, Wi-Fi assistant uses a virtual private network (VPN).
The VPN protects your data from being seen by other users of the open network.
When a VPN is active, you’ll see a "Network may be monitored" message.
Google monitors system data. When you're securely connected
to a website (by HTTPS), VPN operators, like Google, can't record your content.
Google uses system data sent through VPN connections to
- Provide and improve Wi-Fi assistant, including the virtual private network (VPN)
- Monitor for abuse
- Comply with applicable laws and regulations, or as required by court or government orders
</code></pre>
What does HN think of this model?