From today’s appearance of the heads of Britain’s security services before the Intelligence and Security Committee of Parliament:

bbc.co.uk

1511: MI6 chief Sir John Sawers says Edward Snowden’s leaks “have been damaging and they have put our operations at risk”.

1513: Sir John Sawers’ comments came after GCHQ director Sir Iain Lobban said covert surveillance of terror groups in the Middle East, Afghanistan and south-east Asia had captured them discussing communications packages they use - and what they wish to move to - as a result of media coverage of the Snowden leaks. “We have seen chat around specific terrorist groups discussing how to avoid what they now perceive to be vulnerable,” he says.

bbc.co.uk

MI6 chief Sir John Sawers warned the politicians that “our adversaries were rubbing their hands with glee” in the wake of the Snowden revelations, adding: “The leaks from Snowden have been very damaging, they’ve put our operations at risk”.

GCHQ chief Sir Iain Lobban said activists in the Middle East and “closer to home” had been monitored discussing ways of switching away from communications they “now perceived as vulnerable”.