Medibank Company Cyber Security Posture

medibank.com.au

At Medibank we are motivated by improving the health of all Australians and the health of our members. We are passionate about building a better health system that is centred on people, and sustainable in the long term. Medibankโ€™s core business is the underwriting and distribution of private health insurance policies through our two brands, Medibank and ahm. We also provide a range of integrated healthcare services to our private health insurance policyholders, government, corporate and other retail customers. Medibankโ€™s headquarters are in Melbourne, Victoria, with operations throughout Australia.

Medibank Company Details

Linkedin ID:

medibank

Employees number:

3560 employees

Number of followers:

52088.0

NAICS:

524

Industry Type:

Insurance

Homepage:

medibank.com.au

IP Addresses:

Scan still pending

Company ID:

MED_1116859

Scan Status:

In-progress

AI scoreMedibank Risk Score (AI oriented)

Between 900 and 1000

This score is AI-generated and less favored by cyber insurers, who prefer the TPRM score.

globalscoreMedibank Global Score
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Ailogo

Medibank Company Scoring based on AI Models

Model NameDateDescriptionCurrent Score DifferenceScore
AVERAGE-Industry03-12-2025

This score represents the average cybersecurity rating of companies already scanned within the same industry. It provides a benchmark to compare an individual company's security posture against its industry peers.

N/A

Between 900 and 1000

Medibank Company Cyber Security News & History

Past Incidents
5
Attack Types
3
EntityTypeSeverityImpactSeenUrl IDDetailsView
MedibankBreach100611/2022MED048271122Link
Rankiteo Explanation :
Attack threatening the economy of a geographical region

Description: Medibank, Australia's largest health insurer, has suffered a cybersecurity incident. It has led to a data breach of around 9.7 million of the company's customers and clients. They accessed data such as the name, date of birth, mailing address, phone number and email address of those affected, along with other information such as customer and credit card IDs, among others.

MedibankCyber Attack85410/2022MED192551122Link
Rankiteo Explanation :
Attack with significant impact with customers data leaks

Description: Health insurer Medibank Private says it has been hit by a cyber attack. The company said "unusual activity" had been detected on its network on Wednesday, but there was no evidence sensitive data, including customer information, had been accessed. Some customer-facing systems have been taken down which will cause "regrettable disruptions" to some customers, but health services will still be available. It is the latest cyber attack after the Optus breach last month, which affected millions of customers.

MedibankCyber Attack10055/2025MED718053025Link
Rankiteo Explanation :
Attack threatening the organization's existence

Description: Medibank experienced a high-profile cyberattack where sensitive customer data, including personal and financial information, was compromised. This attack exposed the personal information of customers, leading to significant reputational damage and potential legal consequences for the company.

MedibankRansomware70410/2022MED220191022Link
Rankiteo Explanation :
Attack with significant impact with customers data leaks

Description: Medibank, the Australian health insurance business targeted by the ransomware attack, attakers accessed its customersโ€™ data. Ransomware did not encrypt Medibank's systems, but thieves frequently steal data to blackmail their victims. They investigated the incident and took actions to protect of their customersโ€™ data very seriously.

MedibankRansomware100511/2022MED23271122Link
Rankiteo Explanation :
Attack threatening the organization's existence

Description: Hackers managed to gain access to all of the Medibank's customersโ€™ personal data. Medibank denied to pay ransom in hack that impacted 9.7 million current and former customers and some of their authorized representatives. The criminals accessed data including the name, date of birth, address, phone number and email address. The criminals are also believed to have accessed health claims data for 480,000 customers, including โ€œcodes associated with diagnosis and procedures administered.โ€

Medibank Company Subsidiaries

SubsidiaryImage

At Medibank we are motivated by improving the health of all Australians and the health of our members. We are passionate about building a better health system that is centred on people, and sustainable in the long term. Medibankโ€™s core business is the underwriting and distribution of private health insurance policies through our two brands, Medibank and ahm. We also provide a range of integrated healthcare services to our private health insurance policyholders, government, corporate and other retail customers. Medibankโ€™s headquarters are in Melbourne, Victoria, with operations throughout Australia.

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Medibank Cyber Security News

2025-04-13T07:00:00.000Z
Legal professional privilege in cybersecurity incident reports โ€“ mere โ€˜incantationsโ€™ are not sufficient

Medibank asserted that the reports it had commissioned from third party consultants and cybersecurity experts were subject to legal professional privilege.

2025-01-14T08:00:00.000Z
Australiaโ€™s Medibank Hack Puts 4 Million Customers at Risk

Medibank is the latest company in Australia to fall victim to a cyber attack after a month of massive data breaches.

2024-08-02T07:00:00.000Z
Optus and Medibank Data Breach Cases Allege Cyber Security Failures

Optus and Medibank have been accused of cyber security failures in legal cases brought by Australian regulators following data breaches inย ...

2025-04-07T07:00:00.000Z
Disentangling the purpose of forensic reports in a โ€œrapidly evolvingโ€ cyber incident: Medibank privilege decision

Between 7 and 9 November 2022, Medibank confirmed that it would not pay any cyber ransom, that data of around 9.7 million current and formerย ...

2025-02-14T14:20:53.000Z
Australia Imposes New Cyber Sanctions in Response to Medibank Private Cyberattack

Australia imposes new cyber sanctions on Russian entities behind the Medibank Private cyberattack, bolstering efforts to deter cybercrime.

2025-02-12T08:00:00.000Z
Russian criminals sanctioned over Medibank hack

The Australian government has imposed new cyber sanctions against hosting platform ZServers and five Russian individuals who enabled aย ...

2024-06-21T07:00:00.000Z
How Medibank allegedly ignored the warning signs in one of Australia's worst cybersecurity breaches

It says on around August 7, 2022, the IT contractor's personal computer was hacked by a "threat actor" who stole his Medibank username andย ...

2025-04-07T07:00:00.000Z
Medibank told to hand over cyber attack reports

Medibank is set to be forced to hand investigative reports probing Australia's worst cyber attack to its customers who are suing the privateย ...

2025-02-12T08:00:00.000Z
Medibank link emerges in multi-country action against ZServers

The federal government has linked overnight action taken against Russian service provider ZServers and five people connected to the hostingย ...

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faq

Frequently Asked Questions (FAQ) on Cybersecurity Incidents

Medibank CyberSecurity History Information

Total Incidents: According to Rankiteo, Medibank has faced 5 incidents in the past.

Incident Types: The types of cybersecurity incidents that have occurred include ['Ransomware', 'Cyber Attack', 'Breach'].

Total Financial Loss: The total financial loss from these incidents is estimated to be {total_financial_loss}.

Cybersecurity Posture: The company's overall cybersecurity posture is described as At Medibank we are motivated by improving the health of all Australians and the health of our members. We are passionate about building a better health system that is centred on people, and sustainable in the long term. Medibankโ€™s core business is the underwriting and distribution of private health insurance policies through our two brands, Medibank and ahm. We also provide a range of integrated healthcare services to our private health insurance policyholders, government, corporate and other retail customers. Medibankโ€™s headquarters are in Melbourne, Victoria, with operations throughout Australia..

Detection and Response: The company detects and responds to cybersecurity incidents through {description_of_detection_and_response_process}.

Incident Details

Incident 1: Ransomware Attack

Title: {Incident_Title}

Description: {Brief_description_of_the_incident}

Date Detected: {Detection_Date}

Date Publicly Disclosed: {Disclosure_Date}

Date Resolved: {Resolution_Date}

Type: {Type_of_Attack}

Attack Vector: {Attack_Vector}

Vulnerability Exploited: {Vulnerability}

Threat Actor: {Threat_Actor}

Motivation: {Motivation}

Incident 2: Data Breach

Title: {Incident_Title}

Description: {Brief_description_of_the_incident}

Date Detected: {Detection_Date}

Date Publicly Disclosed: {Disclosure_Date}

Date Resolved: {Resolution_Date}

Type: {Type_of_Attack}

Attack Vector: {Attack_Vector}

Vulnerability Exploited: {Vulnerability}

Threat Actor: {Threat_Actor}

Motivation: {Motivation}

Common Attack Types: The most common types of attacks the company has faced are ['Cyber Attack', 'Ransomware'].

Identification of Attack Vectors: The company identifies the attack vectors used in incidents through {description_of_identification_process}.

Impact of the Incidents

Incident 1: Ransomware Attack

Financial Loss: {Financial_Loss}

Data Compromised: {Data_Compromised}

Systems Affected: {Systems_Affected}

Downtime: {Downtime}

Operational Impact: {Operational_Impact}

Conversion Rate Impact: {Conversion_Rate_Impact}

Revenue Loss: {Revenue_Loss}

Customer Complaints: {Customer_Complaints}

Brand Reputation Impact: {Brand_Reputation_Impact}

Legal Liabilities: {Legal_Liabilities}

Identity Theft Risk: {Identity_Theft_Risk}

Payment Information Risk: {Payment_Information_Risk}

Incident 2: Data Breach

Financial Loss: {Financial_Loss}

Data Compromised: {Data_Compromised}

Systems Affected: {Systems_Affected}

Downtime: {Downtime}

Operational Impact: {Operational_Impact}

Conversion Rate Impact: {Conversion_Rate_Impact}

Revenue Loss: {Revenue_Loss}

Customer Complaints: {Customer_Complaints}

Brand Reputation Impact: {Brand_Reputation_Impact}

Legal Liabilities: {Legal_Liabilities}

Identity Theft Risk: {Identity_Theft_Risk}

Payment Information Risk: {Payment_Information_Risk}

Average Financial Loss: The average financial loss per incident is {average_financial_loss}.

Commonly Compromised Data Types: The types of data most commonly compromised in incidents are {list_of_commonly_compromised_data_types}.

Incident 1: Ransomware Attack

Entity Name: {Entity_Name}

Entity Type: {Entity_Type}

Industry: {Industry}

Location: {Location}

Size: {Size}

Customers Affected: {Customers_Affected}

Incident 2: Data Breach

Entity Name: {Entity_Name}

Entity Type: {Entity_Type}

Industry: {Industry}

Location: {Location}

Size: {Size}

Customers Affected: {Customers_Affected}

Response to the Incidents

Incident 1: Ransomware Attack

Incident Response Plan Activated: {Yes/No}

Third Party Assistance: {Yes/No}

Law Enforcement Notified: {Yes/No}

Containment Measures: {Containment_Measures}

Remediation Measures: {Remediation_Measures}

Recovery Measures: {Recovery_Measures}

Communication Strategy: {Communication_Strategy}

Adaptive Behavioral WAF: {Adaptive_Behavioral_WAF}

On-Demand Scrubbing Services: {On_Demand_Scrubbing_Services}

Network Segmentation: {Network_Segmentation}

Enhanced Monitoring: {Enhanced_Monitoring}

Incident 2: Data Breach

Incident Response Plan Activated: {Yes/No}

Third Party Assistance: {Yes/No}

Law Enforcement Notified: {Yes/No}

Containment Measures: {Containment_Measures}

Remediation Measures: {Remediation_Measures}

Recovery Measures: {Recovery_Measures}

Communication Strategy: {Communication_Strategy}

Adaptive Behavioral WAF: {Adaptive_Behavioral_WAF}

On-Demand Scrubbing Services: {On_Demand_Scrubbing_Services}

Network Segmentation: {Network_Segmentation}

Enhanced Monitoring: {Enhanced_Monitoring}

Incident Response Plan: The company's incident response plan is described as {description_of_incident_response_plan}.

Third-Party Assistance: The company involves third-party assistance in incident response through {description_of_third_party_involvement}.

Data Breach Information

Incident 2: Data Breach

Type of Data Compromised: {Type_of_Data}

Number of Records Exposed: {Number_of_Records}

Sensitivity of Data: {Sensitivity_of_Data}

Data Exfiltration: {Yes/No}

Data Encryption: {Yes/No}

File Types Exposed: {File_Types}

Personally Identifiable Information: {Yes/No}

Prevention of Data Exfiltration: The company takes the following measures to prevent data exfiltration: {description_of_prevention_measures}.

Handling of PII Incidents: The company handles incidents involving personally identifiable information (PII) through {description_of_handling_process}.

Ransomware Information

Incident 1: Ransomware Attack

Ransom Demanded: {Ransom_Amount}

Ransom Paid: {Ransom_Paid}

Ransomware Strain: {Ransomware_Strain}

Data Encryption: {Yes/No}

Data Exfiltration: {Yes/No}

Ransom Payment Policy: The company's policy on paying ransoms in ransomware incidents is described as {description_of_ransom_payment_policy}.

Data Recovery from Ransomware: The company recovers data encrypted by ransomware through {description_of_data_recovery_process}.

Regulatory Compliance

Ransomware Logo

Incident 1: Ransomware Attack

Regulations Violated: {Regulations_Violated}

Fines Imposed: {Fines_Imposed}

Legal Actions: {Legal_Actions}

Regulatory Notifications: {Regulatory_Notifications}

Data Breach Logo

Incident 2: Data Breach

Regulations Violated: {Regulations_Violated}

Fines Imposed: {Fines_Imposed}

Legal Actions: {Legal_Actions}

Regulatory Notifications: {Regulatory_Notifications}

Regulatory Frameworks: The company complies with the following regulatory frameworks regarding cybersecurity: {list_of_regulatory_frameworks}.

Ensuring Regulatory Compliance: The company ensures compliance with regulatory requirements through {description_of_compliance_measures}.

Lessons Learned and Recommendations

Incident 1: Ransomware Attack

Lessons Learned: {Lessons_Learned}

Incident 2: Data Breach

Lessons Learned: {Lessons_Learned}

Incident 1: Ransomware Attack

Recommendations: {Recommendations}

Incident 2: Data Breach

Recommendations: {Recommendations}

Key Lessons Learned: The key lessons learned from past incidents are {list_of_key_lessons_learned}.

Implemented Recommendations: The company has implemented the following recommendations to improve cybersecurity: {list_of_implemented_recommendations}.

References

Incident 1: Ransomware Attack

Source: {Source}

URL: {URL}

Date Accessed: {Date_Accessed}

Incident 2: Data Breach

Source: {Source}

URL: {URL}

Date Accessed: {Date_Accessed}

Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at {list_of_additional_resources}.

Investigation Status

Incident 1: Ransomware Attack

Investigation Status: {Investigation_Status}

Incident 2: Data Breach

Investigation Status: {Investigation_Status}

Communication of Investigation Status: The company communicates the status of incident investigations to stakeholders through {description_of_communication_process}.

Stakeholder and Customer Advisories

Incident 1: Ransomware Attack

Stakeholder Advisories: {Stakeholder_Advisories}

Customer Advisories: {Customer_Advisories}


Incident 2: Data Breach

Stakeholder Advisories: {Stakeholder_Advisories}

Customer Advisories: {Customer_Advisories}

Advisories Provided: The company provides the following advisories to stakeholders and customers following an incident: {description_of_advisories_provided}.

Initial Access Broker

Incident 1: Ransomware Attack

Entry Point: {Entry_Point}

Reconnaissance Period: {Reconnaissance_Period}

Backdoors Established: {Backdoors_Established}

High Value Targets: {High_Value_Targets}

Data Sold on Dark Web: {Yes/No}

Incident 2: Data Breach

Entry Point: {Entry_Point}

Reconnaissance Period: {Reconnaissance_Period}

Backdoors Established: {Backdoors_Established}

High Value Targets: {High_Value_Targets}

Data Sold on Dark Web: {Yes/No}

Monitoring and Mitigation of Initial Access Brokers: The company monitors and mitigates the activities of initial access brokers through {description_of_monitoring_and_mitigation_measures}.

Post-Incident Analysis

Incident 1: Ransomware Attack

Root Causes: {Root_Causes}

Corrective Actions: {Corrective_Actions}

Incident 2: Data Breach

Root Causes: {Root_Causes}

Corrective Actions: {Corrective_Actions}

Post-Incident Analysis Process: The company's process for conducting post-incident analysis is described as {description_of_post_incident_analysis_process}.

Corrective Actions Taken: The company has taken the following corrective actions based on post-incident analysis: {list_of_corrective_actions_taken}.

Additional Questions

General Information

Ransom Payment History: The company has {paid/not_paid} ransoms in the past.

Last Ransom Demanded: The amount of the last ransom demanded was {last_ransom_amount}.

Last Attacking Group: The attacking group in the last incident was {last_attacking_group}.

Incident Details

Most Recent Incident Detected: The most recent incident detected was on {most_recent_incident_detected_date}.

Most Recent Incident Publicly Disclosed: The most recent incident publicly disclosed was on {most_recent_incident_publicly_disclosed_date}.

Most Recent Incident Resolved: The most recent incident resolved was on {most_recent_incident_resolved_date}.

Impact of the Incidents

Highest Financial Loss: The highest financial loss from an incident was {highest_financial_loss}.

Most Significant Data Compromised: The most significant data compromised in an incident was {most_significant_data_compromised}.

Most Significant System Affected: The most significant system affected in an incident was {most_significant_system_affected}.

Response to the Incidents

Third-Party Assistance in Most Recent Incident: The third-party assistance involved in the most recent incident was {third_party_assistance_in_most_recent_incident}.

Containment Measures in Most Recent Incident: The containment measures taken in the most recent incident were {containment_measures_in_most_recent_incident}.

Data Breach Information

Most Sensitive Data Compromised: The most sensitive data compromised in a breach was {most_sensitive_data_compromised}.

Number of Records Exposed: The number of records exposed in the most significant breach was {number_of_records_exposed}.

Ransomware Information

Highest Ransom Demanded: The highest ransom demanded in a ransomware incident was {highest_ransom_demanded}.

Highest Ransom Paid: The highest ransom paid in a ransomware incident was {highest_ransom_paid}.

Regulatory Compliance

Highest Fine Imposed: The highest fine imposed for a regulatory violation was {highest_fine_imposed}.

Most Significant Legal Action: The most significant legal action taken for a regulatory violation was {most_significant_legal_action}.

Lessons Learned and Recommendations

Most Significant Lesson Learned: The most significant lesson learned from past incidents was {most_significant_lesson_learned}.

Most Significant Recommendation Implemented: The most significant recommendation implemented to improve cybersecurity was {most_significant_recommendation_implemented}.

References

Most Recent Source: The most recent source of information about an incident is {most_recent_source}.

Most Recent URL for Additional Resources: The most recent URL for additional resources on cybersecurity best practices is {most_recent_url}.

Investigation Status

Current Status of Most Recent Investigation: The current status of the most recent investigation is {current_status_of_most_recent_investigation}.

Stakeholder and Customer Advisories

Most Recent Stakeholder Advisory: The most recent stakeholder advisory issued was {most_recent_stakeholder_advisory}.

Most Recent Customer Advisory: The most recent customer advisory issued was {most_recent_customer_advisory}.

Initial Access Broker

Most Recent Entry Point: The most recent entry point used by an initial access broker was {most_recent_entry_point}.

Most Recent Reconnaissance Period: The most recent reconnaissance period for an incident was {most_recent_reconnaissance_period}.

Post-Incident Analysis

Most Significant Root Cause: The most significant root cause identified in post-incident analysis was {most_significant_root_cause}.

Most Significant Corrective Action: The most significant corrective action taken based on post-incident analysis was {most_significant_corrective_action}.

What Do We Measure?

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Incident
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Finding
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Grade
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Digital Assets

Every week, Rankiteo analyzes billions of signals to give organizations a sharper, faster view of emerging risks. With deeper, more actionable intelligence at their fingertips, security teams can outpace threat actors, respond instantly to Zero-Day attacks, and dramatically shrink their risk exposure window.

These are some of the factors we use to calculate the overall score:

Network Security

Identify exposed access points, detect misconfigured SSL certificates, and uncover vulnerabilities across the network infrastructure.

SBOM (Software Bill of Materials)

Gain visibility into the software components used within an organization to detect vulnerabilities, manage risk, and ensure supply chain security.

CMDB (Configuration Management Database)

Monitor and manage all IT assets and their configurations to ensure accurate, real-time visibility across the company's technology environment.

Threat Intelligence

Leverage real-time insights on active threats, malware campaigns, and emerging vulnerabilities to proactively defend against evolving cyberattacks.

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