article_snippet: last night, Theresa May emerged vital safe houses had also been lost.
article_snippet: Security officials have had to abandon buildings used to house top-secret sources for fear Security officials have been compromised – at huge cost to the British taxpayer.
article_snippet: At the same time, GCHQ has lost track of some of Britain’s most dangerous criminals because of the way the fugitive exposed GCHQ operations.
article_snippet: Intelligence officials had to stop monitoring drug gangs, paedophiles, human traffickers and money launderers.
article_snippet: In other cases, GCHQ has toned down or abandoned surveillance amid fears that the tactics are too easy to spot and could force criminals to ‘go dark’ and fall off the radar completely.
article_snippet: Parliament’s Intelligence and Security Committee concluded that the only items seen by analysts were those of the ‘highest intelligence value’, and these amounted to several thousand a day.