> A probe packet contains the MAC address as well as the list of all the past Wi-fi networks that your device has tried to join before, which can reveal a lot about you!

Generally, most modern devices send broadcast/wildcard probes precisely to avoid leaking the PNL. From what I know, directed probes are only sent for hidden APs.

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rafram 3 hours ago | parent | next [-]

And most modern devices randomize MAC addresses ("Wi-Fi addresses" in Apple-ese, for probably obvious reasons) between networks, and even between broadcasts/connections to the same network.

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gausswho 2 hours ago | parent | next [-]

I think this is only true for mobile devices? I'm curious how one would configure Linux to randomize MAC addresses by default.

	▲	rafram 2 hours ago \| parent \| next [-]
		macOS rotates MAC addresses between networks by default, and between connections to the same network unless it's password-protected. (It's under System Settings -> "Details..." or three-dot menu by a network -> "Private Wi-Fi address.") Windows also randomizes by default as long as your network controller supports it. It sounds like Linux requires some textual configuration that depends on your distro.
	▲	c22 2 hours ago \| parent \| prev \| next [-]
		In Linux changing the MAC address can be done simply on the command line, so I'd probably just write this functionality into a bash script that I'd call before ifup.
	▲	warkdarrior 2 hours ago \| parent \| prev [-]
		https://fedoramagazine.org/randomize-mac-address-nm/

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Jordan1604 an hour ago | parent | prev [-]

[flagged]

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oofbey 3 hours ago | parent | prev [-]

Correct. All major OSes stopped broadcasting the preferred SSID list by 2017, with Android and Linux being the last. Apple stopped in 2014. Windows by 2009.