Security Intelligence

The unsecured internet connection is the latest revelation about Mr Hegseth's use of the app and raises the possibility that sensitive defence information could have been hacked. 

Geraldton and surrounds played a critical role in Australia's defence in World War II and that is still the case today.

After another Signal controversy, there is mounting pressure on US Secretary of Defense Pete Hegseth and reports of "dysfunction" and "mass chaos" inside the Pentagon.

A former ASIO spy is breaking his cover to expose the activities of a notorious preacher at the centre of Australia's resurgent pro-Islamic State network.

Marcus contacted the ABC to reveal his warnings about the bishop after watching a 7.30 interview with the Wakeley attacker's parents last year.

Australia's domestic spy agency, ASIO, was repeatedly warned about a potential attack on a Sydney bishop almost two years before it happened, according to explosive claims by a former undercover agent.

The prime minister has accused Russia of wanting propaganda to be promoted by Australians, after Moscow's ambassador to Indonesia said Australia had "no cards" to play in the situation.

A month after sharing details of an attack on Houthi rebels in a signal chat group that included a magazine editor, US media outlets are reporting US Defense Secretary Pete Hegseth also shared details about the mission with family members.

Protesters have ambushed Prime Minister Anthony Albanese at a hotel he was staying at, the latest incident in a series of disruptions that have plagued both sides of politics during the election campaign. 

Former prime minister John Howard says defence should never be used as a bargaining chip in negotiating exemptions from US President Donald Trump's tariffs.

Australia's leading universities cut ties with Confucius Institutes, but don’t cite concerns of foreign interference.

Determined to hide Australia's secret version of the CIA from the public, ASIO kept a lid on its role in the JFK assassination probe.  

This week's story about Washington's group chat mix-up has prompted debate over what constitutes "war plans" and whether the material was classified. The Atlantic has now published the full chat.

It piles pressure on Donald Trump's administration, which has insisted no US service personnel were put at risk due to the leak of sensitive information.  

Donald Trump's National Security Advisor, Michael Waltz, has kept his job today after taking responsibility for adding a journalist to a secret group chat that was used ahead of air strikes in Yemen.

US President Donald Trump defends the top adviser who inadvertently looped a magazine editor into a war group chat, saying he'd "learned a lesson" from the "glitch".

In any other presidency, the story would rock the US: top national security advisers mistakenly adding a journalist to their group chat. But Washington is not what it used to be.

A US magazine editor appears to have been sent classified military plans after Donald Trump's national security team accidentally included him in their group chat.

The government has boosted funding for the Office of National Intelligence after releasing a major review of Australia's spy agencies.

The Trump administration has declassified documents revealing the CIA investigated anonymous calls made to the US embassy in Canberra before and after president John F Kennedy's assassination.