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

CHAPTER TEN
You Can Run but Not Hide
If yyou carryy yyour cell phone with yyou throughout the dayy, as most
of us do, then yyou are not invisible. You are being surveilled—even if yyou
don’t have geolocation tracking enabled on yyour phone. For example, if yyou
have iOS 8.2 or earlier, Apple will turn off GPS in airplane mode, but if yyou
have a newer version, as most of us do, GPS remains on—even if yyou are in
airplane mode—unless yyou take additional steps. 1 To find out how much his
mobile carrier knew about his dailyy activityy, a prominent German politician,
Malte Spitz, filed suit against the carrier, and a German court ordered the
companyy to turn over its records. The sheer volume of those records was
astounding. Just within a six-month period, theyy had recorded his location
85,000 times while also tracking everyy call he had made and received, the
phone number of the other partyy, and how long each call lasted. In other
words, this was the metadata produced byy Spitz’s phone. And it was not just
for voice communication but for text messages as well. 2
Spitz teamed up with other organizations, asking them to format the data
and make it public. One organization produced dailyy summaries like the one
below. The location of that morning’s Green Partyy meeting was ascertained
from the latitude and longitude given in the phone companyy records.