Skip to main content
Report a cybercrime, cyber security incident or vulnerability.
Report

What are you looking for?

You can search for keywords to find pages that can help you e.g. scam

Report

Contact us

Portal login

  • About us

    About us

    Learn about who we are and what we do.

    About us
    • About ASD's ACSC
      • Who we are
      • Alerts and advisories
      • News
      • Reports and statistics
      • Contact us
  • Learn the basics

    Learn the basics

    Interactive tools and advice to boost your online safety.

    Learn cyber security Sign up for alerts
    • Explore the basics
      • Recognise and report scams
      • Set secure passphrases
      • Set up and perform regular backups
      • Turn on multi-factor authentication
      • Update your devices
      • Watch out for threats
      • Small business
      • Seniors
    • View resources
      • Glossary
      • Quiz library
      • Resources library
      • Translated Information
  • Protect yourself

    Protect yourself

    Advice and information about how to protect yourself online.

    Protect yourself Easy steps to secure yourself online Cyber health check tool Sign up for alerts
    • Securing your accounts
      • Multi-factor authentication
      • Passphrases
      • Passkeys
    • Securing your devices
      • How to secure your devices
      • How to back up your files and devices
      • How to update your device and software
    • Securing your email
      • Email security
    • Staying secure online
      • Connecting with others online
      • Protect yourself from scams
      • Online shopping
      • Connecting to public Wi-Fi and hotspots
      • Secure your Wi-Fi and router
      • Cyber security for charities and not-for-profits
    • Resources to protect yourself
      • Protecting your family
      • Personal cyber security guides
  • Threats

    Threats

    Common online security risks and advice on what you can do to protect yourself.

    Threats Report a cybercrime Sign up for alerts
    • Types of threats
      • Account compromise
      • Business email compromise
      • Cryptomining
      • Data breaches
      • Hacking
      • Identity theft
      • Information stealer
    • <notitle>
      • Malicious insiders
      • Malware
      • Phishing
      • Quishing
      • Ransomware
      • Scams
      • Social engineering
  • Report and recover

    Report and recover

    Respond to cyber threats and take steps to protect yourself from further harm.

    Report and recover Make a report Sign up for alerts
    • Report
      • Report a cybercrime, incident or vulnerability
      • Cybercrime - getting help
      • Single Reporting Portal
    • How we help during a cyber security incident
      • ASD’s role in cyber security: For legal practitioners
      • Supporting Australian organisations through a cyber security incident
      • Limited Use
    • Recover from
      • Account compromise
      • Business email compromise
      • Data breaches
      • Hacking
      • Identity theft
      • Malware
      • Ransomware
      • Scams
  • For business and government

    For business and government

    Resources for business and government agencies on cyber security.

    For business and government Become an ASD partner Cyber Security Awareness Month 2025 Critical infrastructure All publications Alerts and advisories Exercise in a Box
    • ASD's cyber security frameworks
      • Information security manual
      • Blueprint for Secure Cloud
      • Essential Eight
      • Gateway security guidance package
      • Mitigating cyber security incidents
      • Modern defensible architecture
      • Principles of operational technology cyber security
    • Secure design
      • Artificial intelligence
      • Operational technology environments
      • Planning for post-quantum cryptography
      • Secure by Design
    • Protecting devices and systems
      • Assessment and evaluation programs
      • Cloud computing
      • Hardening systems and applications
      • Legacy IT management
      • Remote working and secure mobility
      • Securing edge devices
      • System administration
    • Detecting and responding to threats
      • Cyber security incident response
      • Detecting and mitigating Active Directory compromises
      • Event logging
      • Vulnerability planning
    • Small business cyber security
      • Small business hub
      • Protecting your staff
      • Securing customer personal data
    • Supplier cyber risk management
      • Managed service providers
      • Managing cyber supply chains
    • Protecting business leaders
      • Cyber security for business leaders
      • Questions for the board of directors to ask about cyber security
      • Security tips for social media and messaging apps
  • Contact us
  • Report a cybercrime or cyber security incident
  • Portal login
Australian Cyber
Security Hotline
1300 CYBER1 (1300 292 371)

Search

Filter results by

Content type

  • Advice and guidance
  • Alerts and advisories
  • News and media releases
  • Programs
  • Publications
  • Reports and statistics
  • Threats

Audience

  • Individuals & families
  • Small & medium businesses
  • Organisations & Critical Infrastructure
  • Government

Recommended pages

Sign up for alerts
Watch out for threats
Ransomware

Search results

Displaying search results for
Displaying 301 - 330 of 432 results.

Applied filters
Clear all filters

/business-government/protecting-devices-systems/hardening-systems-applications/network-hardening/domain-name-system-security-for-domain-owners

Domain Name System security for domain owners   Publication

Oct 6, 2021 - This publication provides information on DNS security for domain owners. It also shared helpful strategies to reduce the risk of domain misuse.

Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/view-all-content/news-and-media/new-zero-trust-guidance-seeking-industry-feedback

New zero trust guidance – seeking industry feedback   News

Feb 10, 2025 - Have your say on new Foundations for modern defensible architectures, including zero trust and secure-by-design principles.

Organisations & Critical Infrastructure
Government
/business-government/small-business-cyber-security/small-business-hub/small-business-cloud-security-guides/technical-example-application-control

Technical example: Application control   Publication

Dec 16, 2022 - Application control restricts the ability of an application to run or install on a device. Application control makes it harder for users to intentionally or unintentionally install unwanted or malicious software.

Small & medium businesses
/about-us/view-all-content/news-and-media/further-cyber-sanctions-in-response-to-medibank-private-cyberattack

Further cyber sanctions in response to Medibank Private cyberattack   News

Feb 12, 2025 - Today Australia has imposed targeted financial and travel sanctions on a cyber infrastructure entity – ZServers – and five of its Russian employees for their roles in providing infrastructure to host and disseminate data stolen from Medibank Private in 2022.

Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/view-all-content/news-and-media/cyber-security-awareness-month-2024

Cyber Security Awareness Month 2024   News

Oct 1, 2024 - October is Cyber Security Awareness Month, a time for all Australians to talk about cyber security and take action to protect their devices and accounts.

Individuals & families
Small & medium businesses
/about-us/alerts/summary-tradecraft-trends-2019-20

Summary of Tradecraft Trends for 2019-20   Alert

May 20, 2020 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) investigated and responded to numerous cyber security incidents during 2019 and 2020 so far.

Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/view-all-content/news-and-media/cyber-security-operational-technology

Cyber Security for Operational Technology   News

Oct 2, 2024 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC) has released new guidance to help critical infrastructure protect their systems and online supply chains.

Organisations & Critical Infrastructure
Government
/about-us/news/Improve-cyber-security-with-quad-cyber-challenge

Improve your cyber security with the Quad Cyber Challenge!    News

Apr 6, 2023 - The challenge is aimed at promoting responsible cyber security practices across Australia, India, Japan and the United States. 

Individuals & families
Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/view-all-content/alerts-and-advisories/critical-vulnerability-affecting-fortinets-forticlientems

Critical Vulnerability affecting Fortinet’s FortiClientEMS   Alert

Mar 22, 2024 - ASD’s ACSC is aware of a critical vulnerability (CVE-2023-48788) affecting Fortinet’s FortiClientEMS. Organisations are strongly encouraged to take immediate action to ensure affected instances are patched and investigate for potential compromise.

Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/advisories/covid-19-themed-malicious-cyber-activity

COVID-19 themed malicious cyber activity   Advisory

Mar 27, 2020 - This update is designed to raise awareness of increasing COVID-19 themed malicious cyber activity, and provide practical cyber security advice that organisations and individuals can follow to reduce the risk of being impacted.

Individuals & families
Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/view-all-content/news-and-media/an-introduction-to-artificial-intelligence

An introduction to Artificial Intelligence   News

Nov 24, 2023 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has released an introduction to Artificial Intelligence (AI).

Individuals & families
Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/view-all-content/news-and-media/new-fact-sheet-critical-infrastructure-leaders-actions-mitigate-prc-state-sponsored-cyber-activity

New fact sheet for critical infrastructure leaders – actions to mitigate PRC state-sponsored cyber activity   News

Mar 20, 2024 - The fact sheet provides guidance for critical infrastructure leadership to protect their infrastructure and critical functions from Volt Typhoon – a state-sponsored cyber actor linked to the People’s Republic of China (PRC).

Organisations & Critical Infrastructure
Government
/about-us/alerts/ransomware-targeting-australian-aged-care-and-healthcare-sectors

Ransomware targeting Australian aged care and healthcare sectors   Alert

Aug 2, 2020 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) is aware of increased targeting of healthcare, including hospitals and aged care, by ransomware campaigns undertaken by cyber criminals.

Individuals & families
Small & medium businesses
Organisations & Critical Infrastructure
Government
/business-government/protecting-devices-systems/legacy-it-management/managing-the-risks-of-legacy-it-practitioner-guidance

Managing the risks of legacy IT: Practitioner guidance   Publication

Jun 12, 2024 - This publication provides guidance for practitioners on managing the risks posed by legacy IT and outlines low-cost mitigations that organisations can draw upon.

Organisations & Critical Infrastructure
Government
/about-us/view-all-content/alerts-and-advisories/critical-security-vulnerability-affecting-apache-struts2-below-6-4-0

Critical security vulnerability affecting Apache Struts2 below 6.4.0.   Alert

Dec 13, 2024 - ASD’s ACSC is aware of a critical vulnerability impacting Apache Struts2 below 6.4.0 (CVE-2024-53677).

Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/view-all-content/news-and-media/do-you-purchase-technology-your-organisation

Do you purchase technology for your organisation?   News

Dec 5, 2024 - Updated guidance and new guidance for executives now available for Choosing secure and verifiable technologies.

Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/view-all-content/news-and-media/prc-state-sponsored-cyber-group-apt40s-expanding-tradecraft-and-tactics

PRC state-sponsored cyber group APT40’s expanding tradecraft and tactics    News

Jul 9, 2024 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has released a new joint advisory with international partners on the People’s Republic of China (PRC) Ministry of State Security (MSS) tradecraft in action.

Organisations & Critical Infrastructure
Government
/about-us/view-all-content/reports-and-statistics

Reports and statistics  

Nov 3, 2022 - Find the latest cyber security reports and statistics

/about-us/alerts/high-severity-vulnerability-present-in-microsoft-outlook-for-windows

High Severity Vulnerability present in Microsoft Outlook for Windows   Alert

Mar 29, 2023 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) is aware of a Microsoft Outlook for Windows vulnerability. All Australian organisations using all versions of Microsoft Outlook for Windows should apply the available patch immediately.

Individuals & families
Small & medium businesses
Organisations & Critical Infrastructure
Government
/business-government/detecting-responding-to-threats/detecting-and-mitigating-active-directory-compromises

Detecting and mitigating Active Directory compromises   Publication

Jan 22, 2025 - This publication provides an overview of techniques used to compromise Active Directory, and recommended strategies to mitigate these techniques. By implementing the recommendations in this publication, organisations can significantly improve their Active Directory security, and therefore their overall network security posture.

Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/view-all-content/news-and-media/secure-design-foundations

Secure-by-Design Foundations   News

Jul 31, 2024 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC) has released updated guidance to help technology manufacturers and those who use their digital product or service to adopt secure-by-design principles.

Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/news/back-data-defend-against-cybercrime

Back-up data to defend against cybercrime   News

Mar 31, 2021 - On World Back-up Day, the Australian Government is urging businesses, organisations and individuals to back-up their digital information to protect themselves against compromise.

Individuals & families
Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/alerts/lockbit-20-ransomware-incidents-australia

LockBit 2.0 ransomware incidents in Australia   Alert

Aug 5, 2021 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has observed an increase in reporting of LockBit 2.0 ransomware incidents in Australia.

Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/view-all-content/alerts-and-advisories/vulnerabilities-citrix-netscaler-adc-and-netscaler-gateway-products

Vulnerabilities in Citrix NetScaler ADC and NetScaler Gateway products   Alert

Jan 18, 2024 - ASD’s ACSC is aware of multiple vulnerabilities (CVE-2023-6548 and CVE-2023-6549) in Citrix NetScaler products (NetScaler ADC and NetScaler Gateway). Organisations are strongly encouraged to take immediate action to ensure affected instances are patched.

Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/news/multi-factor-authentication-stronger-cyber-protection

Multi-factor authentication for stronger cyber protection   News

Feb 25, 2021 - Australians are being urged to strengthen proof of identity protections to help stop cybercriminals gaining unauthorised access to online information and accounts.

Individuals & families
Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/news/microsoft-introduces-exchange-emergency-mitigation-service

Microsoft introduces Exchange Emergency Mitigation service   News

Oct 1, 2021 - Microsoft has launched a new optional protection for Microsoft Exchange servers.

Individuals & families
Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/news/how-the-acsc-can-help-during-a-cyber-security-incident

How the ASD's ACSC can help during a cyber security incident   News

Sep 11, 2023 - The Australian Signal’s Directorate’s Australian Cyber Security Centre’s (ASD's ACSC) incident management capabilities provide technical advice and assistance to support Australian organisations through a cyber security incident response.

Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/view-all-content/alerts-and-advisories/remote-code-execution-vulnerability-cisco-unified-communications-products

Remote Code Execution Vulnerability In Cisco Unified Communications Products   Alert

Jan 26, 2024 - ASD’s ACSC is aware of a vulnerability in Cisco Unified Communications Products (CVE 2024-20253).

Organisations using Cisco Unified Communication products are strongly advised to follow the mitigation advice provided by Cisco if they are vulnerable.

Small & medium businesses
Organisations & Critical Infrastructure
Government
/about-us/news/essential-eight-assessment-course

Essential Eight Assessment Course   News

Jul 4, 2023 - Today, the Australian Signals Directorate has launched the Essential Eight Assessment Course pilot in collaboration with TAFEcyber.

Individuals & families
Small & medium businesses
Organisations & Critical Infrastructure
/about-us/news/Cyber-Security-Awareness-Month-2023

Cyber Security Awareness Month 2023   News

Sep 25, 2023 - October is Cyber Security Awareness Month, a time for all Australians to improve their cyber security knowledge and take action to protect their information and devices.

Individuals & families
Small & medium businesses
Organisations & Critical Infrastructure
Government

Pagination

  • First page « First
  • Previous page ‹‹
  • …
  • Page 7
  • Page 8
  • Page 9
  • Page 10
  • Current page 11
  • Page 12
  • Page 13
  • Page 14
  • Page 15
  • Next page ››
  • Last page Last »
Report a cyber security incident for critical infrastructure
Get alerts on new threats Alert Service
Become an ASD Partner
Report a cybercrime or cyber security incident
Acknowledgement of Country Circle
Acknowledgement of Country

We acknowledge the Traditional Owners and Custodians of Country throughout Australia and their continuing connections to land, sea and communities.
We pay our respects to them, their cultures and their Elders; past, present and emerging. We also recognise Australia's First Peoples' enduring contribution to Australia's national security.

Australian Cyber Security Hotline 1300 CYBER1 (1300 292 371)
  • Contact us
  • Glossary
  • View all content
  • Copyright
  • Privacy
  • Accessibility
  • Disclaimer
  • Careers
  • Social media terms of use

Popular pages

  • Essential Eight
  • Alerts and advisories
  • Information Security Manual
Authorised by the Australian Government, Canberra