- From: Jules Polonetsky <julespol@futureofprivacy.org>
- Date: Sat, 15 Oct 2011 19:52:56 -0400
- To: "'Richard Barnes'" <richard.barnes@gmail.com>, "'Harlan Lieberman-Berg'" <hliebermanberg@chitika.com>
- Cc: "'Steingruebl, Andy'" <asteingruebl@paypal-inc.com>, "'public-privacy \(W3C mailing list\)'" <public-privacy@w3.org>, "'Ashkan Soltani'" <ashkan.soltani@gmail.com>
http://www.ipc.on.ca/images/Resources/pbd-ip-geo.pdf The above link to the paper which describes the process used by Verizon and Bering Media also includes a good discussion of the identification risks of relying on zip plus 4. -----Original Message----- From: public-privacy-request@w3.org [mailto:public-privacy-request@w3.org] On Behalf Of Richard Barnes Sent: Friday, October 14, 2011 6:27 PM To: Harlan Lieberman-Berg Cc: Steingruebl, Andy; public-privacy (W3C mailing list); Ashkan Soltani Subject: Re: RE: Privacy alert: Verizon is now monitoring your mobile Web habits There's a whole lot of variation. I used to live in an apartment building where a ZIP+4 identified about half a floor, fewer than 10 households. --Richard On Thu, Oct 13, 2011 at 3:28 PM, Harlan Lieberman-Berg <hliebermanberg@chitika.com> wrote: > My understanding is that ZIP+4 isolates you to about a city block of > houses, an apartment complex, or a business that is somehow high > volume - except for P.O. boxes, where it isolates to a single box. > > -- > Harlan Lieberman-Berg > Director of Operations > Chitika, Inc. > > On Oct 13, 2011 3:08 PM, "Steingruebl, Andy" > <asteingruebl@paypal-inc.com> wrote: >> >> Do you know off the top of your head how many people are uniquely identifiable by just their zip+4? Anyone? I’m not asking in addition to other data, just about zip+4 btw. >> >> >> >> -- >> >> Andy Steingruebl >> >> Sr. Manager, Internet Standards and Governance >> >> PayPal Information Risk Management >> >> (408) 967-4650 >> >> >> >> From: public-privacy-request@w3.org [mailto:public-privacy-request@w3.org] On Behalf Of Ashkan Soltani >> Sent: Thursday, October 13, 2011 11:21 AM >> To: Richard Barnes >> Cc: Perez, Aram; public-privacy (W3C mailing list) >> Subject: Re: Privacy alert: Verizon is now monitoring your mobile Web habits >> >> >> >> My understanding is that VZ is using subscriber's addresses in order to tag http traffic with ZIP+4, which is then later shared with advertisers (similar to Feeva http://www.wired.com/epicenter/2010/06/coming-soon-web-ads-tailored-to -your-zip-4/all/1 ) >> >> > > >
Received on Saturday, 15 October 2011 23:53:34 UTC