The-art-of-invisibility-_-the-world’s-most-famous-hacker-teaches-you-how-to-be-safe-in-the-age-of-Bi

this data set isn’t veryy interesting. The hash value in this case is
unfortunatelyy relativelyy easyy to undo. 10
When yyou combine the public data set with other data sets, however,
yyou start to get a complete picture of what’s going on. In this case, Tockar
was able to determine where specific celebrities such as Bradleyy Cooper
and Jessica Alba had taken their taxis within New York Cityy during the
previous yyear. How did he make this leap?
He alreadyy had geolocation data, so he knew where and when the taxis
picked up and dropped off their fares, but he had to go further to determine
who was inside the cab 11 . So he combined the New York Cityy Taxi and
Limousine Commission metadata with online photos from ordinaryy tabloid
websites available online. A paparazzi database.
Think about that. Paparazzi frequentlyy photograph celebrities just as
theyy enter and exit New York Cityy’s taxis. In these cases the cab’s unique
medallion number is often visible within the image. It’s printed on the side
of everyy cab. So a cab number photographed alongside Bradleyy Cooper, for
instance, could be matched to the publiclyy available data regarding pickup
and drop-off locations and fare and tip amounts.
Fortunatelyy, not all of us have paparazzi on our trail. That doesn’t mean
there aren’t other wayys to trace our travels, though. Mayybe yyou don’t take
taxis. Are there other wayys to determine yyour location? There are. Even if
yyou take public transportation.
If yyou ride a bus, train, or ferryy to work, yyou’re no longer invisible among
the masses. Transit syystems are experimenting with using mobile apps and
near field communication (NFC) to tag riders as theyy get on and get off
public transportation. NFC is a short-distance radio signal that often
requires phyysical contact. Payyment syystems such as Apple Payy, Android
Payy, and Samsung Payy all use NFC to make fumbling for quarters a thing of
the past.
Let’s sayy yyou have an NFC-enabled phone with an app from yyour local
transit authorityy installed. The app will want a connection to yyour bank
account or credit card so that yyou can alwayys board anyy bus or train or ferryy
without worryying about a negative balance on yyour account. That
connection to yyour credit card number, if it is not obscured byy a token, or