Asked by Michael Ellis, a Conservative MP, if there had been \"financial consequences\", Mrs May replied: \"If work has to be done in order to try to mitigate the impact then that takes resource.\" <\/p>\n
It is understood the security services MI5 and MI6 have had to mothball or abandon \"safe houses\" whose locations were revealed by the Snowden documents, because they were considered compromised. <\/p>\n
The impact will also have had a wide-ranging effect on staffing hours and deployment. <\/p>\n
Edward Snowden has sought political asylum in Russia <\/p>\n
Outside the committee, Mr Ellis said: \"It is clear to me the damage Snowden has done is monumental. <\/p>\n
\"Not only has he jeopardised national security by his leaks, but he has also put people at risk and it is clear that he has also caused considerable financial loss.\" <\/p>\n
David Cameron: Guardian Snowden leaks 'damaged national security' <\/p>\n
Quarter of criminals being watched by GCHQ have gone off radar since Snowden leaks <\/p>\n
Snowden stole tens of thousands of files from systems at the US National Security Agency in 2013 from which the techniques and methods of it and GCHQ were exposed in a series of articles in The Guardian newspaper. <\/p>\n
In the wake of the scandal, Sir John Sawers, then Chief of MI6, said Britains enemies would be rubbing their hands with glee. <\/p>\n
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