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A Cheap Spying Tool With a High Creepy Factor

Adafruit 1914

A Cheap Spying Tool With a High Creepy Factor @ NYTimes.com.

Brendan O’Connor is a security researcher. How easy would it be, he recently wondered, to monitor the movement of everyone on the street – not by a government intelligence agency, but by a private citizen with a few hundred dollars to spare?

Mr. O’Connor, 27, bought some plastic boxes and stuffed them with a $25, credit-card size Raspberry Pi Model A computer and a few over-the-counter sensors, including Wi-Fi adapters. He connected each of those boxes to a command and control system, and he built a data visualization system to monitor what the sensors picked up: all the wireless traffic emitted by every nearby wireless device, including smartphones.

Each box cost $57. He produced 10 of them, and then he turned them on – to spy on himself. He could pick up the Web sites he browsed when he connected to a public Wi-Fi – say at a cafe – and he scooped up the unique identifier connected to his phone and iPad. Gobs of information traveled over the Internet in the clear, meaning they were entirely unencrypted and simple to scoop up.

Even when he didn’t connect to a Wi-Fi network, his sensors could track his location through Wi-Fi “pings.” His iPhone pinged the iMessage server to check for new messages. When he logged on to an unsecured Wi-Fi, it revealed what operating system he was using on what kind of device, and whether he was using Dropbox or went on a dating site or browsed for shoes on an e-commerce site. One site might leak his e-mail address, another his photo.


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