In his speech, Lewis noted the scale and sophistication of threats varied greatly.
In an address to the Lowy Institute, outgoing ASIO head Duncan Lewis warned that “the scale and scope of foreign intelligence activity against Australian interests is unprecedented”.
Smoke from an airstrike rises in the background as a man flees during fighting between Iraqi special forces and IS militants in Mosul, Iraq, on May 17, 2017.
AP Photo/Maya Alleruzzo
Ten months of data reveal some alarming trends.
Abu Bakr al-Baghdadi, painted portrait.
After a major defeat in Mosul, Islamic State seems to have suffered a blow that could end its goal of establishing a cross-border caliphate in the Middle East.
An Iraqi soldier inspects a train tunnel adorned with an Islamic State group flag in Mosul, Iraq.
AP Photo/Khalid Mohammed
An expert explains that such claims are probably more calculated and careful than you'd expect.
A woman holds a flag as she looks out over the National Sept. 11 Memorial and Museum.
Data on violent incidents in the US reveal that our focus on Islamist extremism since 9/11 may be misguided.
On his way to the White House, Jan. 20, 2017.
AP Photo/Andrew Harnik
Is Trump correct in asserting that NATO has outlived its utility? Or that NATO’s members enjoy a 'free ride' on the back of the US? A political scientist examines the evidence.
Iraqi special forces soldier advancing toward Mosul, Iraq.
AP Photo/Khalid Mohammed
What happens to the Islamic State if it loses the battle for territory in Iraq and Syria? Here's a list of ways it might go down.
A still from the most recent Islamic State video, released last week.
Videos released by Islamic State have captured the attention of the world for years. But the media focus on its so-called 'slick, professional' video techniques runs the risk of mythologising the terrorist group.
From Twitter, to Facebook, to online gaming; radical groups use a vast range of tools to recruit new followers to their causes.
The unfolding information about the Zika virus and saddening images of babies infected with microcephaly should really scare us all. The disease has spread “explosively” throughout the Americas, with 32…
Malcolm Turnbull gave a speech to the Centre for Strategic and International Studies in Washington that focused on global security and trade.
Malcolm Turnbull has called for the campaign against Islamic State to considerably improve its use of social media.
With drones and modern radar technology it's possible to target Islamic State's oil tankers – and strike at the heart of their income stream.
Blocking IS one click at a time?
Anonymous strives to bring down IS propaganda before it reaches the masses.
In condemning terrorist attacks in Paris, French president Francois Hollande (center) used the term Da'ish to refer to Islamic State, a deliberate naming change.
The French term for ISIS – known as Da'ish or Daesh – has gathered more interest in the wake of the Paris attacks. Here's why this battle of naming matters.
The opening ceremony of an exercise organized by the US military in Ndjamena, Chad earlier this year to take on Boko Haram.
Apart from numerous worldwide threats including from China, Iran, North Korea and Russia, the US is taking more notice of Africa due to the expansion of extremist organisations on the continent.
ISIS take Ramadi; on the move in Iraq.
ISIS victories in Iraq do not come out of the blue; the group's military success results from a long history of tensions between Sunnis and Shia and US policies that fostered such tension.
When not employing the description ‘death cult’, Prime Minister Tony Abbott prefers to use the name Da'esh because the group ‘hates being referred to by this term’.
The terrorist group now calls itself Islamic State, but the many names by which it is known reflect both its own evolution and the deliberate choices others make in how they refer to it.
Like their allies, New Zealand troops served in Afghanistan without the ‘Rolls Royce’ legal agreement now being demanded by some politicians for the upcoming joint mission with Australia in Iraq.
AAP/NZ Defence Force, CPL Sam Shepherd
Australia and New Zealand's joint mission in Iraq is getting underway. But in NZ, the decision to send 143 troops to train Iraqis against Islamic State has faced a divided parliament and public.
Human-headed winged bulls guarding a door in Dur-Sharrukin.
ISIS's destruction of archeological treasures is horrifying but reflects a too-human history of obliterating the past of "enemy" cultures. Moreover, all is not really "lost."
Footage of published by Islamic State of militants destroying artefacts in a museum in Mosul, Iraq.
Social media is making it easier for extremists to recruit individuals to commit cultural attacks.