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06 Jul 2020 - Alert status: MEDIUM

TMUI remote code execution vulnerability - CVE-2020-5902

The ACSC advises users of F5’s enterprise and data centre BIG-IP products to ensure their systems are promptly patched after the recent disclosure of new remote code execution vulnerability.

25 May 2020 - Alert status: HIGH

DDoS threats being made against Australian organisations

The Australian Signals Directorate's Australian Cyber Security Centre (ACSC) is aware of a number of Denial of Service (DoS) for ransom threats being made against Australian organisations, primarily in the banking and finance sector.

22 May 2020 - Alert status: HIGH

2019-126: Vulnerable version of Telerik UI being actively exploited by APT actor

The Australian Cyber Security Centre (ACSC) has become aware that Advanced Persistent Threat (APT) actors have been scanning for and attempting exploitation against unpatched versions of Telerik UI for ASP.NET AJAX using publicly available exploits. Successful exploitation could allow an attacker to upload files to the vulnerable server to facilitate further compromise.

22 May 2020 - Alert status: HIGH

COVID-19 malicious cyber activity

Malicious cyber actors are actively targeting individuals and Australian organisations with COVID-19 related scams and phishing emails. These incidents are likely to increase in frequency and severity over the coming weeks and months. This is due, in part, to the ease in which existing scam emails and texts can be modified with a COVID-19 theme.

22 May 2020 - Alert status: HIGH

Active exploitation of vulnerability in Microsoft Internet Information Services

The Australian Signals Directorate’s Australian Cyber Security Centre (ACSC) is aware that sophisticated actors are actively exploiting a deserialisation vulnerability existing in all versions of Microsoft’s Internet Information Services (IIS) using the .NET framework (.NET). The vulnerability exploits the service’s VIEWSTATE parameter to allow for remote code execution by unauthorised users.

20 May 2020 - Alert status: MEDIUM

Summary of Tradecraft Trends for 2019-20

The Australian Cyber Security Centre (ACSC) investigated and responded to numerous cyber security incidents during 2019 and 2020 so far.

08 May 2020 - Alert status: HIGH

Advanced Persistent Threat (APT) actors targeting Australian health sector organisations and COVID-19 essential services

The Australian Signals Directorate’s (ASD) Australian Cyber Security Centre (ACSC) is aware that Advanced Persistent Threat (APT) actors are actively targeting health sector organisations and medical research facilities.

16 Apr 2020 - Alert status: HIGH

Sextortion email campaign impacting Australians

A large number of Australians are being impacted by an email ‘sextortion’ campaign in which the cyber scammers responsible have threatened to release personal and sensitive information to the recipients’ contacts unless the scammer is paid in cash or bitcoin.

06 Feb 2020 - Alert status: HIGH

2020-003: Mailto ransomware incidents

The Australian Signals Directorate’s Australian Cyber Security Centre (ACSC) is aware of recent ransomware incidents involving a ransomware tool known as ‘Mailto’ or ‘Kazakavkovkiz’. Mailto belongs to the KoKo ransomware family.

29 Jan 2020 - Alert status: HIGH

Processors can be exploited by Meltdown and Spectre vulnerabilities

Security researchers have developed methods involving speculative execution to read kernel memory from user space on a variety of processors from a range of vendors produced in the last decade. These methods have been referred to as Meltdown and Spectre.

15 Jan 2020 - Alert status: CRITICAL

2020-002: Critical vulnerabilities for Microsoft Windows

On 15 January 2020 (AEDT), Microsoft released security patches for three critical and one important vulnerabilities in the Microsoft Remote Desktop Client, Remote Desktop Gateway and the Windows operating system. The ACSC recommends that users of these products apply patches urgently to prevent malicious actors from using these vulnerabilities to compromise your network.

13 Jan 2020 - Alert status: CRITICAL

Active exploitation of critical vulnerability in Citrix Application Delivery Controller and Citrix Gateway

The Australian Signals Directorate’s Australian Cyber Security Centre (ACSC) is aware of ongoing attempts to exploit a critical vulnerability in Citrix Application Delivery Controller (ADC) (formerly known as NetScaler ADC), Citrix Gateway (formerly known as NetScaler Gateway) and Citrix SD-WAN WANOP.

13 Dec 2019 - Alert status: HIGH

Australia Post SMS scam targeting Australians

With millions of parcel deliveries expected around the country, Australia Post is seeing widespread scam text (SMS) messages being sent to people, using their brand.

05 Aug 2019 - Alert status: HIGH

2019-130: Password spray attacks

The Australian Cyber Security Centre (ACSC) is aware of a high volume of ongoing password spray attacks targeting Australian organisations.

30 Jul 2019 - Alert status: HIGH

ICS-CERT Alerts

Link to ICS-CERT alerts from the US Department of Homeland Security

24 Jul 2019 - Alert status: HIGH

Sextortion campaign

The Australian Cyber Security Centre (ACSC) is aware of a sextortion scam email campaign targeting the Australian community.

03 Jul 2019 - Alert status: HIGH

2019-009: Securing unprotected network and data services

The Australian Cyber Security Centre (ACSC), the cyber defensive component of the Australian Signals Directorate (ASD), has observed a large number of unprotected network and database/storage services hosted on Australian Internet Protocol (IP) address ranges.

06 Jun 2019 - Alert status: HIGH

Microsoft Windows security vulnerability – ‘BlueKeep’ (CVE-2019-0708)

CVE-2019-0708, also known as ‘BlueKeep’ leaves users open to attack from malicious actors who can exploit a vulnerability via Remote Desktop Services (RDS) on legacy versions of the Windows operating system.

06 May 2019 - Alert status: MEDIUM

Microsoft SharePoint CVE-2019-0604

The ACSC is aware of malicious cyber actors successfully exploiting a Microsoft SharePoint vulnerability in order to implant web shells on compromised hosts.

15 Mar 2019 - Alert status: MEDIUM

773M accounts affected by 'Collection #1' breach

The Australian Cyber Security Centre (ACSC) is aware of a significant data breach affecting 773 million email addresses and usernames.

29 Sep 2018 - Alert status: MEDIUM

Facebook security issue affects 50M user accounts

The ACSC is aware of a security issue affecting 50 million Facebook user accounts whereby a flaw in the 'View As' feature allowed attackers to steal Facebook access tokens, which could be used to take over user's accounts. Access tokens are the equivalent of digital keys that allow users to remain logged into Facebook.

01 Jul 2018 - Alert status: CRITICAL

Vulnerability in the Drupal content management system

The ACSC has become aware of a critical vulnerability in the Drupal content management system. This potentially allows attackers to exploit multiple attack vectors on a Drupal site, which could result in the site being completely compromised.

25 May 2018 - Alert status: HIGH

VPNFilter malware

Australian users need to be aware of VPNFilter malware.

17 Apr 2018 - Alert status: HIGH

Routers targeted: Cisco Smart Install feature continues to be targeted by Russian state-sponsored actors

Russian state-sponsored actors are responsible for activity targeting Cisco devices using the Smart Install feature worldwide, including Australia.

15 Nov 2015 - Alert status: HIGH

Web shells being used as attack vectors on networks

This alert highlights the frequent use of web shells as an exploitation vector. Web shells can be used to leverage unauthorised access and can lead to wider network compromise.