The MP scored a surprise victory in the contest to run the committee that oversees MI5, MI6 and GCHQ.
Labour dismisses 'entirely false and ridiculous smears'.
Abdul-Hakim Belhaj has alleged that MI6 helped the US kidnap him in 2004.
The agency's chief said the information revolution "fundamentally changes" our operating environment.
'It is fuelled by a deepening sectarian divide in the Middle East.'
'That was the most blatant intrigue against a man I rather liked.'