The personal details of thousands of TAFE Queensland students have been stolen in an IT system hack.

The ABC has been told that hackers stole students' names and addresses.

Both the TAFE Queensland and Department of Education and Training websites were breached.

The discovery was made following an email threat from an unknown source.

The Queensland Government's chief information officer, Andrew Mills, said the threat was "credible but low-level".

"Initial investigations have confirmed that information was illegally accessed and related to enquiries and feedback data submitted online," he said.

"For security reasons, the Government will not be providing specific details of the information illegally accessed."

Attorney-General Yvette D'ath told Parliament the personal details taken would "otherwise be found on other public websites, such as the White Pages".

"It's information that is held in a way that is not very useable if anyone was to actually access this data," she said.

Opposition Leader Lawrence Springborg has demanded the Government reveal the details of the hack.

"Was there any threatened criminality with regards to any of those things?" he asked in Parliament.

"What was the extent of the breach? Who was involved and how was it detected?

"Now, it's not good enough ... to stand in here and to say 'it's all been done and dusted, it's OK it's just gone away'."

The Queensland Police Service (QPS) said the hack followed a number of recent cyber attacks on other agencies across the country.

"The investigation remains ongoing and we can provide no further details relating to the investigation," a QPS statement said.

Australian Federal Police and the Australian Cyber Security Centre are also investigating.