[LINK] google misdeeds and Australia's Privacy Commissioner
kim at holburn.net
Tue Jun 22 18:48:57 EST 2010
On 2010/Jun/22, at 4:29 PM, Richard Chirgwin wrote:
> At the physical layer, you're absolutely right. But a WiFi network is
> not only Layer One - it's also the MAC layer, Layer Two.
Bzzzzzzt. Wrong. It is the link layer or layer 1. MAC (Media Access
Control) address, "ethernet" layer. Layer 2 is the IP layer.
> At the MAC
> layer, the "network" is created by devices obeying the addressing
> (among other things). To eavesdrop, you don't just open a radio
Actually, you don't open anything, you can just listen.
> - you also choose to implement a specific addressing behaviour ("turn
> off the MAC address check", as Errata puts it).
You may not necessarily use the driver installed by the department
store but then you aren't using equipment you bought from a department
I don't really want to revisit the discussion about whether google did
right or wrong. It's pretty clear what it did wrong was not so much
to receive packets but to store packets probably along with location
data. Given the speed of the google cars I can't imagine there is
that much data from any one site. At those sort of speeds there is no
chance of connecting to any networks, just receiving a couple of wifi
packets at the most from any AP. It is probable that any normal
consumer wifi receiver probably wouldn't work under those conditions.
Sorting out payload from broadcast is probably too time-consuming to
be done in realtime which maybe why they stored it.
Oh and a wifi packet is just as likely to contain only a fragment of
an IP packet which is what Curtis was talking about.
I don't think getting in high dudgeon over this is all that helpful.
Clearly the Privacy commissioner isn't too fussed either.
IT Network & Security Consultant
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