MPs and peers are to get advice and training from MI5 to help them spot Chinese and Russian spies.
Politicians and aides deemed 'high risk individuals' are to receive guidance from spooks about the risks they face from foreign actors.
The assistance from MI5's National Protective Security Authority arm will advise them to be more suspicious of the people they hire and their motives.
They will also be told to take far greater care when using social media, the Sunday Times reported.
It comes just days after a spying case against two men, one of whom was a parliamentary researcher, was dropped by prosecutors.
