Sneaky, very sneaky.
Check it out:

A surprising new list of National Security Agency surveillance capabilities was revealed during Berlin’s Chaos Communications Congress this weekend, including the agency’s ability to hack private WiFi networks from up to eight miles away.

Security researcher Jacob Appelbaum co-wrote a Der Spiegel article published Sunday detailing how the NSA intercepts newly-purchased computer products mid-shipment to install surveillance malware before reaching the buyer.

While onstage in Berlin, Appelbaum went into further detail about the agency’s unknown capabilities — including installing surveillance and remote-control malware and spyware into unsuspecting devices via WiFi from almost 10 miles out.