Hacker Uses Australian Early Warning Network to Send Spam Alerts

https://www.bleepingcomputer.com/news/security/hacker-uses-australian-early-warning-network-to-send-spam-alerts

Emergency warning system compromised as hackers send text and email messages to thousands

https://www.news.com.au/technology/online/hacking/emergency-warning-system-compromised-as-hackers-send-text-and-email-messages-to-thousands/news-story/ebc22b8080dd2af7d4102803b61f0097

Emergency Warning Network confirms breach

https://www.zdnet.com/article/emergency-warning-network-confirms-breach