Global Intelligence claims its Cybercheck technology can help cops find key evidence to nail a case. But a WIRED investigation reveals the smoking gun often appears far less solid.
That’s where I know I don’t know enough to respond.
Well, crap. I just looked it up. Looks like phones will send out your MAC address when looking for WiFi networks to connect to, and they more or less always search for WiFi, unless currently connected to WiFi.
So - yeah. Same issues with Bluetooth.
And some newer consumer routers do all sorts of funky things under the hood in the name of security, which includes sending information about traffic back to their corporate home base. That could easily also include MAC addresses of passing devices. (Or telling the manufacturer every site you visit. Very fun now that the latest trend in routers is to require cloud connections and accounts, so your identity with them is ‘known’.)
Thanks for the clarification, does this also work with wifi ?
That’s where I know I don’t know enough to respond.Well, crap. I just looked it up. Looks like phones will send out your MAC address when looking for WiFi networks to connect to, and they more or less always search for WiFi, unless currently connected to WiFi.
So - yeah. Same issues with Bluetooth.
And some newer consumer routers do all sorts of funky things under the hood in the name of security, which includes sending information about traffic back to their corporate home base. That could easily also include MAC addresses of passing devices. (Or telling the manufacturer every site you visit. Very fun now that the latest trend in routers is to require cloud connections and accounts, so your identity with them is ‘known’.)
Most phones these days use randomized MACs
https://www.guidingtech.com/what-is-mac-randomization-and-how-to-use-it-on-your-devices/
Not sure if that is for BT too, but looks like there is some support for it in the standards
https://novelbits.io/how-to-protect-the-privacy-of-your-bluetooth-low-energy-device/
https://novelbits.io/bluetooth-address-privacy-ble/
So seems like it is implemented on some phones at least
https://www.bluetooth.com/blog/bluetooth-technology-protecting-your-privacy/
From 2015. So this seems to be a solved problem for a decade now