Office of the Australian Information Commissioner Breach Incident Score: Analysis & Impact (OFF1772577306)

In this Rankiteo incident briefing, we review the Office of the Australian Information Commissioner breach identified under incident ID OFF1772577306.

The analysis begins with a detailed overview of Office of the Australian Information Commissioner's information like the linkedin page: https://www.linkedin.com/company/office-of-the-australian-information-commissioner, the number of followers: 18575, the industry type: Government Administration and the number of employees: 129 employees

After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 747 and after the incident was 673 with a difference of -74 which is could be a good indicator of the severity and impact of the incident.

In the next step of the video, we will analyze in more details the incident and the impact it had on Office of the Australian Information Commissioner and their customers.

On 30 June 2025, Australian Schools (Education Sector) disclosed Phishing and Data Breach issues under the banner "Australian Schools Face Rising Cyber Threats as Attackers Exploit Weak Security".

Australian schools are increasingly targeted by cybercriminals, with attackers exploiting weak passwords, legacy accounts, and inconsistent security measures to breach sensitive data.

The disruption is felt across the environment, and exposing Student records, Medical data and Financial details.

In response, and began remediation that includes Adoption of phishing-resistant MFA (FIDO-based passkeys) and Hardware security keys (YubiKey).

The case underscores how teams are taking away lessons such as Traditional MFA methods (SMS codes, one-time passwords) are insufficient against AI-driven phishing campaigns. Phishing-resistant MFA (FIDO-based passkeys) is more effective. Weak passwords, legacy accounts, and inconsistent security measures are primary vulnerabilities, and recommending next steps like Adopt phishing-resistant MFA (FIDO-based passkeys), Replace passwords with hardware security keys (e.g., YubiKey) and Align with ACSC’s Essential Eight framework.

Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.

The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.

Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Phishing (T1566) with high confidence (90%), supported by evidence indicating phishing remaining the dominant attack method in 60% of cases and Valid Accounts (T1078) with moderate to high confidence (80%), supported by evidence indicating 80% of breaches stem from compromised credentials. Under the Credential Access tactic, the analysis identified Brute Force (T1110) with moderate to high confidence (70%), supported by evidence indicating attackers exploiting weak passwords, legacy accounts and Container API (T1552.007) with moderate confidence (50%), supported by evidence indicating inconsistent security measures heighten vulnerability. Under the Collection tactic, the analysis identified Data from Information Repositories (T1213) with moderate to high confidence (80%), supported by evidence indicating schools hold vast amounts of sensitive information such as student records, medical data. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating motivation such as Data exfiltration, Financial gain. Under the Defense Evasion tactic, the analysis identified Use Alternate Authentication Material: Pass the Hash (T1550.002) with moderate confidence (60%), supported by evidence indicating legacy accounts and weak passwords exploited and Valid Accounts: Default Accounts (T1078.001) with moderate confidence (60%), supported by evidence indicating legacy accounts heighten vulnerability. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.