Prime minister Malcolm Turnbull plans to confront US president Donald Trump at the G20 summit on Friday, demanding that American tech companies do more to prevent terrorism from using encrypted messaging services.

In an interview with Fairfax Media, Turnbull said it was a growing concern, globally, that “increasingly police and security agencies can intercept telecommunications, but they cannot read them”.

“My message — we need to have much greater co-operation because the terrorist threat is absolutely global,” he said.

Turnbull identified that issue of encryption is “complex problem” but it would be up to the leaders at the summit in Hamburg, Germany to determine the responsibilities the messaging service, such as Whatsapp and Telegram, owed to public safety.

While British prime minister Theresa May and German chancellor Angela Merkel are of the sam thinking as Tunrbull, he expects that it will be a harder talking point with the US which have “very strong libertarian tradition” and already faced backlash from tech companies.

In 2015, Apple refused to assist in unlocking the mobile phone of the terrorists involved in the San Bernardino shootings that killed 14 people.

The Sydney Morning Herald has more.

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