In a submission to a Senate inquiry into the regional processing centre, the whistleblower details security protocol failings and describes a "culture of cover-ups" among Wilson Security managers.
Allegations cover the period from July 2013 to December 2014.
They include claims Wilson managers shredded reports that raised "concerns of safety" and conducted surveillance on Greens senator Sarah Hanson-Young when she visited the island in December 2013.
Nauru Whistleblower details allegations against wilson security
The Queensland Opposition has referred Police Minister Jo-Ann Miller to the corruption watchdog for contacting a man who made allegations against Labor MP Rick Williams.
Police Minister referred to the crime and corruption commission