The professional association for Australia's ICT industry has warned there are not enough specialists to deliver the federal government's $230 million cyber security strategy.

Australian Computer Society president Anthony Wong said the government faced a shortfall of up to 100,000 ICT professionals by 2020 and urgent action was needed to expand the workforce.

Australia is predicted to face a shortage of cyber security professionals in coming years.

"With our lives increasingly going online, security and privacy are two of the top issues confronting businesses," he said.

"We are going to need more professionals who are familiar with these threats to protect us online."