Matthew Taylor and Nick Hopkins report:
The UK spy agency GCHQ is facing a legal challenge in the European courts over claims that its mass online surveillance programmes have breached the privacy of tens of millions of people across the UK and Europe.
Three campaign groups – Big Brother Watch, the Open Rights Group and English PEN – together with the German internet activist Constanze Kurz, have filed papers at the European court of human rights alleging that the collection of vast amounts of data, including the content of emails and social media messages, by Britain’s spy agencies is illegal.
Read more on The Guardian.