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“If you think you're making a private call, or sending a discreet
message, think again. Under an anti-terrorism law passed in late
2001 in the wake of the atrocities of September 11, details of
every website visited and the transmission of every email sent and
every phone call made in the UK can be retained and made available
to authorities. This may give individuals privacy concerns but for
telcos and internet service providers faced with the consequent
storage and retrieval requirements, it is cause for financial
concern.” source...