Peter Dutton has accused social media giants of protecting pedophiles and promised to "shame" companies into changing their ways.
The home affairs minister is heading to Washington as he continues his crusade against the circulation of child pornography.
Mr Dutton and security ministers from the "Five Eyes" intelligence alliance - comprising the US, Britain, Australia, Canada and New Zealand - are demanding tech titans allow backdoor access to encrypted content.
"These companies are really pushing back but we've got to stand up to them," he told 2GB radio on Thursday.
"The number of cases where this child abuse material is being shared online - there are groups where pedophiles are meeting online, protected by these companies - it can't stand."
Mr Dutton is dumbfounded the companies are resisting his calls.
"They say it undermines their business model, believe it or not," he said.
"We're shaming these companies into action."
Australian Associated Press