Centre Alliance has urged the government to release its detailed report on the Parliament cyber attack that is said to blame China's Ministry of State Security for the hack.

Senate president Scott Ryan, who was handed the report last week, said he would await a "lay-person's briefing" before making a statement but argued against releasing an unclassified version of the report.

Five sources with direct knowledge of the report's findings told Reuters the Australian Signals Directorate believes China's Ministry of State Security conducted the attack on Parliament's cyber network. The Chinese government has denied it is responsible.

Powerful crossbench senator Rex Patrick labelled Senator Ryan's response "disappointing" and will put a motion to the Senate later this month urging the government to release the report.