Ways to circumvent shutdown of normal communications
“.. With a tin can, some copper wire and a few dollars’ worth of nuts, bolts and other hardware, a do-it-yourselfer can build a makeshift directional antenna. A mobile phone, souped-up with such an antenna, can talk to a network tower that is dozens of kilometres beyond its normal range (about 5km, or 3 miles).
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their existence has recently been valuable to the operation of several groups of revolutionaries in Egypt, Libya and elsewhere. To get round government shutdowns of internet and mobile-phone networks, resourceful dissidents have used such makeshift antennae to link their computers and handsets to more orthodox transmission equipment in neighbouring countries.
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Creative ideas for circumventing cyber-attacks even extend to the redesign of apparently innocent domestic equipment. Kenneth Geers, an American naval-intelligence analyst at a NATO cyberwar unit in Tallinn, Estonia, describes a curious microwave oven. Though still able to cook food, its microwaves (essentially, short radiowaves) are modulated to encode information as though it were a normal radio transmitter. Thus, things turn full circle, for the original microwave oven was based on the magnetron from a military radar. From conflict to domesticity to conflict, then, in a mere six decades ..”
“Unorthodox links to the internet”
Science and Technology, The Gaurdian UK, 17 March 2011
http://www.economist.com/node/18386151 – last access 23 March 2011 – ( Full Article )