1. Online Job Boards: Job boards such as Seek, Indeed, and Jora are popular job search platforms in Australia. You can search for security jobs on these sites by location, job title, or keywords. 

2. Company Websites: Many security companies in Australia post their job openings directly on their websites. You can search for security companies in your area and check their career pages for job openings. 

3. Government Websites: The Australian Government’s job search site, Jobactive, lists current job openings across a variety of industries, including security. You can search for security jobs in your area on this site. 

4. Recruitment Agencies: There are several recruitment agencies in Australia that specialize in security jobs. These agencies can help match you with relevant job openings based on your skills and experience. 

5. Networking: Networking with other security industry professionals or attending security industry events can also be a way to learn about job openings in your area. 

Remember to tailor your resume and cover letter to each job application and ensure that you meet the specific requirements listed in the job description. Good luck with your job search!