I believe that, had Prime Minister Harper been given these allegations, they would have been made public, and they would have been acted upon. If you've seen how Prime Minister Harper handled things, for example, sending the Iranian delegation home, shutting down the embassy in 2012, that's how Prime Minister Harper handled things when he was briefed by CSIS.
As the former deputy chief of staff and national campaign director both in the 2011 campaign and the 2015 campaign, I was never at one point briefed on any foreign interference leading into both of those elections.