Federal politicians are due to receive a security briefing today. The session will be delivered by intelligence agencies and is expected to cover the incident and the wider security response. It was arranged after the alleged attack on Helen Haines, the federal member for Indi. No complete public account of the incident or the evidence gathered has been released. Because authorities continue to describe the attack as alleged, responsibility has not been publicly established. The briefing is intended to give parliamentarians a clearer picture of the risks facing federal members and the measures being considered.