Sometimes it's a old and boring 802.11 Wi-Fi antenna.
Sometimes it's a cool bright new 3G/4G device.
For sure friends don't let friends put SCADA on the Internet, and plug computer into your USB.
Apparently, not many folks are friends , , .
Mobile buzzword bingo:FemtoCell, COMP128, A5, GEA, HNB, SeGW, HMS, RANAP, SCTP, TR-069 by @arbitrarycode and @GiftsUngiven.
PS. There is different types of SCADA. With antenna.