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Worried someone is watching you? It seems you are right to be. Recent revelations show the US and UK have been hoovering up data on an truly industrial scale.

The CIA cyber security expert turned whistle-blower, Edward Snowden, has been disclosing all sorts of dirty secrets about the West's intelligence gathering efforts. His revelations have also exposed just how much private data is out there, now that we all live so much of our lives online.

Who knows what about you and what can you do to shade yourself from surveillance? As Joshua Rozenberg reports, it will take more than dark glasses and a false moustache.

Former CIA operative, Peter Metzger, now a cyber security recuritment consultant, says that the industry is booming.

Meanwhile, is president Obama's plan to spend seven billion dollars improving access to electricity across Africa too little and too late?