The technology of remote workers is being targeted by Chinese hackers to try and infiltrate corporate systems, Australia's cyber espionage agency has warned.

The findings are part of a rise in state-sponsored hacks targeting businesses and individuals amid global tensions, outlined in the Australian Signals Directorate's latest Cyber Threat Report.

Concerningly, hackers are turning to artificial intelligence in their cyberattacks on major companies, which include banks, telcos, power and water suppliers.

For small and medium companies, the average cost of cybercrime over the past financial year rose by 55 per cent to $97,000.

But for big firms, the average cost is up by 220 per cent, or about $203,000.

The ASD also warns hackers are hijacking employees' home technology and exp

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