In a small room close by the Sydney Opera House, 60 people representing a vast range of communities and industries are working feverishly to come up with ways to combat the Islamic State group's online propaganda machine.

The extremists' ideology and use of social media has struck a chord with thousands of youngsters across the world, drawing them to fight in Iraq and Syria or show support from their home countries.

The United States and its allies have struggled to counter the digitally savvy group, but a pair of Silicon Valley entrepreneurs are leading a grassroots-charge to take on IS in cyberspace, travelling around the world to host hackathon challenges.

The latest hackathon competition -- the fourth in the past five months -- is being held alongside a two-day countering violent extremism conference in Australia's biggest city, attended by high-level officials and experts and opened by Prime Minister Tony Abbott.

The anti-extremism meeting is taking an in-depth look at how IS -- which controls large swathes of territory in Iraq and Syria -- reaches out to youths, with technology giants Facebook, Twitter and Google joining the more than 30 participating countries in hashing out solutions.

Almost 25,000 foreign fighters from over 100 countries were involved in jihadi conflicts worldwide, a recent United Nations report said, with many headed for Iraq and Syria. Some of those making the journey include teenage boys and girls.

The hackathon is designed to take an additional approach to countering IS.

"We marry innovation and the national security sector, with Silicon Valley ethos and start-up models to try and create very new, fast-paced, high-energy (projects)," said hackathon organiser Quintan Wiktorowicz, who was US President Barack Obama's senior adviser for countering violent extremism from 2011 to 2013.

"No single prototype is a silver bullet to stop ISIS radicalisation. But it's the ecosystem that we're building by running these (hackathons) globally and connecting the networks all the time," he told AFP, using another term for IS.

"Over five years, it can be a game changer, it can have strategy impact."

The projects being developed do not have to address radicalisation head on, but are meant to focus on the root causes of why young people choose to leave home, such as feeling disconnected from local communities.

- Extreme heroes -

Hackathon competitors are drawn from across industries and communities that may not normally interact with each other, with a goal to go beyond the talking shop labels usually slapped on conferences and come up with concrete programmes that can turn a profit.

At a three-day "Haqqathon" -- a variation on the word hackathon using the Arabic word "haqq", which means truth -- in Abu Dhabi in April, the people's choice award went to "Marhubba", an app which helps young Muslims tap into Islamic scholarship to answer questions about sex and intimacy.

Silicon Valley entrepreneur Shahed Amanullah, who co-founded start-up incubator Affinis Labs with Wiktorowicz, said IS was "speaking to a vacuum that exists in Muslim youth identity".

"It's giving them an exciting, empowering path to express their identity. We are not doing that on our side," Amanullah said.

"We can't just say what they are doing is not Islam, we have to say what is Islam and explain that in a way that makes them feel good."

Yassmin Abdel-Magied, a drilling engineer, was working with Matthew Quinn, a counter-terrorism specialist and animator Caitlin Bathgate to create an app called "Connect Me" that she describes as "Tinder for mentorship".

Like the online dating app Tinder, Abdel-Magied, 24, is hoping strangers can forge links based on their interests.

At the same desk, Abdullahi Alim, 22, who has a background in finance and statistics, is working with his team on a social media campaign called "Extreme Heroes".

"We're looking to give young Muslim teens who don't have a positive or an active Muslim role model in their life access to non-violent male leaders in their own community to give them a constructive identity," Alim said.

The hackathon was won by Abdel-Magied's team, with the project expected to be supported by seed funding although there were no details at this stage about the size of the grants.

Anne Aly, an Australian counter-terrorism expert and hackathon co-organiser, is passionate about developing grassroots measures away from governments' top-down anti-terrorism narratives.

"I think showing the world, and Australia and the region, that we can bring civil society together to come up with solutions is in itself a very strong message," Aly said.

grk/mtp

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