Australia politics live: ‘we got lucky’ with Perth attack says Burke; treasurer says economy will be ‘buffeted’

Minister tells security conference many people could have been killed in Invasion Day incident; Treasury working ‘full tilt’ on budget measures. Follow updates live

• Get our breaking news email, free app or daily news podcast

Tony Burke says it would be “reckless” and “ignorance in the extreme” for Australia to pretend that immigration is the solution to preventing violent extremism on our shores.

In a speech last night, the home affairs minister said it was very important Australia was careful about who it let in.

It would be ignorance in the extreme for us to pretend that that is the fix. It would be reckless in the extreme for us to pretend that immigration is the solution. It is something that is one of our tools, but the only way we deliver national security is to deal with facts and risks as they present themselves, not as you might want them to be.

Where we once only had to look at radicalisation potentially being something that might come across our border, it now comes across a browser. Where radicalisation used to involve – that you might have to go to a training camp in Afghanistan – it now comes to you in an algorithm.

The Australia Day arrest in Perth, for a number of reasons, it didn’t receive the publicity that it really should have. But can I just say – we got so lucky. We got so lucky.

This was not a stunt. The person who threw the pipe bomb into the middle of a crowd of First Nations protesters believed that – if you look at what it was – this was something where there was a reasonable expectation it would have gone off, and the number of people who then would have been killed. The fact that that didn’t happen is not through any planning. We just got lucky.