Cyber Security News Monthly Round-Up: March 2025

The cybersecurity landscape in March 2025 has been marked by unprecedented challenges, highlighting the critical need for robust digital defence strategies. From escalating ransomware attacks to sophisticated state-backed hacking efforts, this month has underscored the evolving complexity of cyber threats facing organisations and governments worldwide.

 Key Highlights

Ransomware Surge:

Bitdefender's March 2025 Threat Debrief revealed a staggering 126% year-over-year increase in ransomware incidents, with Australia ranking among the top 10 most targeted nations. This record-breaking month emphasizes the growing sophistication of cybercriminal networks.

Denial-of-Service Threats:

The Australian Signals Directorate (ASD) has raised alarms about an increase in DoS attacks targeting critical online services. Insecure Internet of Things (IoT) devices are being exploited to overwhelm websites with excessive traffic, causing significant service disruptions.

Emerging Vulnerabilities:

Multiple critical security issues emerged, including:

• A Windows zero-day vulnerability exploited by 11 state-backed hacking groups since 2017
• A critical use-after-free vulnerability in Google Chrome's Lens component
• 13 high-severity vulnerabilities across Atlassian products

AI Security Concerns:

Cybersecurity experts are calling for a potential ban on DeepSeek AI, citing national security risks after the chatbot was already prohibited from government devices.

Budget Concerns:

The 2025 federal budget has raised eyebrows with minimal investment in cybersecurity, with the term 'cyber' mentioned only six times in the Budget Overview document. These developments underscore the urgent need for proactive cybersecurity measures, continuous threat monitoring, and strategic investment in digital defence technologies.