What the report is about

This audit assessed how effectively Transport for NSW (TfNSW) and Sydney Trains identify and manage their cyber security risks.

The NSW Cyber Security Policy (CSP) sets out 25 mandatory requirements for agencies, including implementing the Australian Cyber Security Centre’s Essential 8 strategies to mitigate cyber security incidents, and identifying the agency’s most vital systems, their ‘crown jewels’. 

The audited agencies have requested that we do not disclose detail of the significant vulnerabilities detected during the audit, as these vulnerabilities are not yet remediated. We provided a detailed report to the agencies in December 2020 outlining significant issues identified in the audit. We have conceded to the agencies' request but it is disappointing that transparency to the Parliament and the public on issues that potentially directly affect them needs to be limited in this way.

What we found

TfNSW and Sydney Trains are not effectively managing their cyber security risks.

Both agencies have assessed their cyber security risks as unacceptably high and both agencies had not identified all of the risks we detected during this audit – some of which are significant.

Both agencies have cyber security plans in place that aim to address cyber security risks. TfNSW and Sydney Trains have combined this into the Transport Cyber Defence Rolling Program, part of the Cyber Defence Portfolio (CDP). 

However, neither agency has reached its target ratings for the CSP and the Essential 8 and maturity is low in relation to significant risks and vulnerabilities exposed.

Further, neither agency is fostering a culture where cyber security risk management is an important and valued aspect of decision-making.

TfNSW is not implementing cyber security training effectively across the cluster with only 7.2% of staff having completed basic cyber security training.

What we recommended

TfNSW and Sydney Trains should:

• develop and implement a plan to uplift the Essential 8 controls to the agency's target state
• as a matter of priority, address the vulnerabilities identified as part of this audit and previously described in a detailed Audit Office report provided to both agencies
• ensure cyber security risk reporting to executives and the Audit and Risk Committee
• collect supporting information for the CSP self assessments 
• classify all information and systems according to importance and integrate this with the crown jewels identification process
• require more rigorous analysis to re-prioritise CDP funding 
• increase uptake of cyber security training.

TfNSW should assess the appropriateness of its target rating for each of the CSP mandatory requirements.

Department of Customer Service should:

• clarify the requirement for the CSP reporting to apply to all systems
• require agencies to report the target level of maturity for each mandatory requirement.

Response to requests by audited agencies to remove information from this report

In preparing this audit report, I have considered how best to balance the need to support public accountability and transparency with the need to avoid revealing information that could pose additional risk to agencies’ systems. This has involved an assessment of the appropriate level of detail to include in the report about the cyber security vulnerabilities identified in this audit.

In making this assessment, the audit team consulted with Transport for NSW (TfNSW), Sydney Trains, and Cyber Security NSW to identify content which could potentially pose a threat to the agencies’ cyber security.

In December 2020, my office also provided TfNSW and Sydney Trains with a detailed report of many of the significant vulnerabilities identified in this audit, to enable the agencies to address the cyber security risks identified. The detailed report was produced as a result of a 'red team' exercise, which was conducted with both agencies' knowledge and consent. The scope of this exercise reflected the significant input provided by both agencies. More information on this exercise is at page 12 of this report.

TfNSW and Sydney Trains have advised that in the six months from December 2020 and at the time of tabling this audit report, they have not yet remediated all the vulnerabilities identified. As a result, they, along with Cyber Security NSW, have requested that we not disclose all information contained in this audit report to reduce the likelihood of an attack on their systems and resulting harm to the community. I have conceded to this request because the vulnerabilities identified have not yet been remediated and leave the agencies exposed to significant risk.

It should be stressed that the risks identified in the detailed report exist due to the continued presence of these previously identified vulnerabilities, rather than due to their potential publication. The audited agencies, alone, are accountable for remediating these vulnerabilities and addressing the risks they pose.

It is disappointing that transparency to the Parliament and the public on issues that potentially directly affect them needs to be limited in this way.

That said, the conclusions drawn in this report are significant in terms of risk and remain valid, and the recommendations should be acted upon with urgency.

Cyber security risk is an increasing area of concern for governments in Australia and around the world. In recent years, there have been a number of high-profile cyber security attacks on government entities in Australia, including in New South Wales. Malicious cyber activity in Australia is increasing in frequency, scale, and sophistication. The Audit Office of New South Wales is responding to these risks with a program of audits in this area, which aim to identify the effectiveness of particular agencies in managing cyber risks, as well as their compliance with relevant policy.

Cyber Security NSW, part of the Department of Customer Service (DCS) releases and manages the NSW Cyber Security Policy (CSP). The CSP sets out 25 mandatory requirements for agencies, including making it mandatory for agencies to implement the Australian Cyber Security Centre Essential 8 Strategies to Mitigate Cyber Security Incidents (the Essential 8). The Essential 8 are key controls which serve as a baseline set of protections which agencies can put in place to make it more difficult for adversaries to compromise a system. Agencies are required to self-assess their maturity against the CSP and the Essential 8, and report that assessment to Cyber Security NSW annually.

The CSP makes agencies responsible for identifying and managing their cyber security risks. The CSP sets out responsibilities and governance regarding risk identification, including making agencies responsible for identifying their 'crown jewels', the agency's most valuable and operationally vital systems. Once these risks are identified, agencies are responsible for developing a cyber security plan to mitigate those risks.

This audit focussed on two agencies: Transport for NSW (TfNSW) and Sydney Trains. TfNSW is the lead agency for the Transport cluster and provides a number of IT services to the entire cluster, including Sydney Trains. This audit focussed on the activities of TfNSW's Transport IT function, which is responsible for providing cyber security across the cluster, as well as directly overseeing four of TfNSW's crown jewels. Sydney Trains is one of the agencies in the Transport cluster. While it receives some services from TfNSW, it is also responsible for implementing its own IT controls, as well as controls to protect its Operational Technology (OT) environment. This OT environment includes systems which are necessary for the operation and safety of the train network.

To test the mitigations in place and the effectiveness of controls, this audit involved a 'red team' simulated exercise. A red team involves authorised attackers seeking to achieve certain objectives within the target's environment. The red team simulated a determined external cyber threat actor seeking to gain access to TfNSW's systems. The red team also sought to test the physical security of some Sydney Trains' sites relevant to the agency's cyber security. The red team exercise was conducted with the knowledge of TfNSW and Sydney Trains.

This audit included the Department of Customer Service as an auditee, as they have ownership of the CSP through Cyber Security NSW. This audit did not examine the management of cyber risk in the Department of Customer Service.

This audit assessed how effectively selected agencies identify and manage their cyber security risks. The audit assessed this with the following criteria:

• Are agencies effectively identifying and planning for their cyber security risks?
• Are agencies effectively managing their cyber security risks?

Following this in-depth portfolio assessment, the Auditor-General for NSW will also table a report on NSW agencies' compliance with the CSP in the first quarter of 2021–22.

Agencies have assessed their cyber risks as being above acceptable levels

An agency's risk tolerance is the amount of risk which the agency will accept or tolerate without developing further strategies to modify the level of risk. Risks that are within an agency's risk tolerance may not require further mitigation and may be deemed acceptable, while risks which are above the agency's risk tolerance likely require further mitigation before they become acceptable to the agency.

Both agencies have defined their risk tolerance and have identified risks which are above this level, indicating that they are unacceptable to the agency. TfNSW has defined 'very high' risks as generally intolerable and 'high' risks as undesirable. Its risk tolerance is 'medium'. Sydney Trains has four classifications of risk: A, B, C and D. A and B risks are deemed 'unacceptable' and 'undesirable' respectively, while C risks are considered 'tolerable'. This aligns with the TfNSW definition of a medium risk tolerance.

Transport IT reported five enterprise-level cyber security risks through its enterprise risk reporting tool in September 2020, all of which relate to cyber security or have causes relating to cyber security. These risks are in aggregate form, rather than relating to specific vulnerabilities. At the time of the audit, one of these risks was rated as very high and the other four rated as high. At this time, Transport IT had identified a further seven divisional-level risks which were above the agency’s risk tolerance.

Similarly, Sydney Trains has identified one main cyber security risk in its IT enterprise-level risk register and another with a potential cyber cause. Both of these IT risks are deemed to have a residual risk of ‘unacceptable’.

Similarly, two cyber-related OT risks have been determined to be above the agency's risk tolerance. One risk is rated as 'unacceptable'. Another risk, while not entirely cyber rated, is rated 'undesirable' and is deemed to have some causes which may stem from a cyber-attack.

Agencies have assessed their current cyber risk mitigations as requiring improvement

In addition to the risk ratings stated above, at the time of the audit neither agency believed that its controls were operating effectively. Transport IT had rated the control environments for its cyber security enterprise risks as 'requires improvement'. Mitigations were listed in the risk register for these risks but, in some cases, they were unlikely to reduce the risk to the target state or by the target date. For example, one risk had actions listed as 'under review' and no further treatment actions listed, but a due date of July 2021, while another risk was being treated by the CDP with a due date of July 2021. The CDP identified in May 2020 that while the average risk identified as part of that program will be reduced to a medium level by this date, ten high risks will still remain. Given the delays in the program, this number may be higher. As such, it seems unlikely that the enterprise risk will be reduced to below a 'high' level by July 2021.

Sydney Trains’ IT and OT risk registers cross-reference controls and mitigations against the causes and consequences. The IT cyber security risk identified in the register had causes with no mitigations designed for them. Further, some of these causes did not have future mitigations designed for them. This risk also had controls in place which are identified as partially effective. For the unacceptable OT risk noted above, while there was a control designed for each of the potential causes, Sydney Trains had identified all of the controls in place as either partially effective or ineffective. This indicates that Sydney Trains was not effectively mitigating the causes of its cyber risks and, even where it had designed controls or mitigations, these were not always implemented to fully mitigate the cause of the risk.

Additional information on gaps in cyber mitigations which were exposed in the course of this audit has been detailed to both agencies. The Foreword of this report provides information about why this detail is not included here.

Essential 8 maturity is low across TfNSW and Sydney Trains and little progress was made in 2020

CSP mandatory requirement 3.2 states that agencies must implement the ACSC Essential 8. Agencies must also rate themselves against each of the Essential 8 on a maturity scale from zero to three and report this to Cyber Security NSW. A full list of the Essential 8 can be found in Exhibit 1. Both agencies have a low level of maturity against the Essential 8 not just in comparison to the targets they have set, but also in relation to the risks and vulnerabilities exposed. Both agencies have set target maturity ratings for the Essential 8 but none of the Essential 8 ratings across either agency are currently implemented to this level. Having a low level of Essential 8 maturity exposes both agencies to significant risks and vulnerabilities. Little progress was made between the 2019 and 2020 attestation periods.

Transport IT has set a target rating of three across all of the Essential 8. Sydney Trains has set a target rating of three for its IT systems. Sydney Trains had an interim target of two for its OT systems in 2020 and advised that this has since increased to three. It should be noted that not all the Essential 8 are applicable to OT systems.

None of the Essential 8 ratings across either agency are currently implemented to the target levels. Given that the Essential 8 provide the controls which are most commonly able to deter cyber-attacks, having maturity at a low level potentially exposes agencies to a cyber security attack.

Some work is underway across both TfNSW and Sydney Trains to improve the Essential 8 control ratings. The CDP provided some resources to the Essential 8 over 2019–20, with uplift focusing on specific systems. The CDP work in 2019 and 2020 relevant to the Essential 8 largely focussed on determining the current state of the Essential 8 and creating a target state roadmap. As a result, there was little improvement between the 2019 and 2020 attestation periods. The CDP has a workstream for the Essential 8 in its FY 2020–21 funding allocation, however as noted above in Exhibit 6 this was delayed as resources were redeployed to Project La Brea. Regardless, work on some specific aspects of the Essential 8 remain part of the 2020–21 CDP allocation, with workstreams allocated to improving three of the Essential 8. In addition, some work from Project La Brea should lead to an improvement in the Essential 8.

Sydney Trains' Cyber Uplift Program included a workstream which had in scope the uplift in the Essential 8 in IT. There were also other workstreams which aimed to improve some of the Essential 8 for OT systems. Work is also ongoing as part of the CDP to uplift these scores in Sydney Trains.

TfNSW and Sydney Trains have not reached their target maturity across the CSP mandatory requirements and TfNSW has not evaluated its cluster-wide target to ensure it is appropriate

Cyber Security NSW allows each agency to determine its target level of maturity for the first 20 CSP mandatory requirements. Agencies can tailor their target levels to their risk profile. Not reaching the target rating of the CSP mandatory requirements risks information and systems being managed inconsistently or not in alignment with good governance principles.

Sydney Trains has set its target level of maturity for IT and OT. All of Sydney Trains' target maturity levels are at least a three (defined), with a target of four (quantitatively managed) for many of the mandatory requirements. While Cyber Security NSW does not currently mandate a minimum level of maturity, in 2019 there was a requirement for each agency to target a minimum level of three.

Sydney Trains has not met its target ratings across the mandatory requirements.

The Transport Cyber Defence Rolling Program has a program KPI to ensure that the entire cluster reaches a minimum maturity level of three against all the CSP requirements by 2023. TfNSW has not reviewed its CSP mandatory requirement targets to determine if a three is desirable for all requirements or if a higher target level may be more appropriate. It is important for senior management to set cyber security objectives as a demonstration of leadership and a commitment to cyber security.

TfNSW has not met its target ratings across the mandatory requirements for its Group IT ISMS, which was the focus of this audit.

Both agencies claimed progress in their implementation of the mandatory requirements between 2019 and 2020. The audit did not seek to verify the self-assessed results from either agency.

Both agencies operate ISMS in line with the CSP

CSP mandatory requirement 3.1 requires agencies to implement an Information Security Management System (ISMS) or Cyber Security Framework (CSF), with scope at least covering systems identified as the agency's ‘crown jewels’. The ISMS or CSF should be compliant with, or modelled on, one or more recognised IT or OT standard. As noted in the introduction, an ISMS ‘consists of the policies, procedures, guidelines, and associated resources and activities, collectively managed by an organisation, in the pursuit of protecting its information assets.’ Both agencies operate an ISMS compliant with the CSP requirement.

As noted in the introduction, TfNSW operates four ISMS. The Transport IT ISMS is certified against ISO27001, the most common standard for ISMS certification. Three of TfNSW’s six crown jewels are managed within this ISMS. The other ISMS are not certified to relevant standards, though TfNSW claims that they align with relevant controls. This is sufficient for the purposes of the CSP.

Sydney Trains operates two ISMS, one for IT and another for OT. Neither of these are certified to relevant ISMS Standards, however there have been conformance reviews of both IT and OT with relevant standards. These ISMS cover all crown jewels in the agency.

There are currently 11 ISMS in operation across the Transport cluster. TfNSW has proposed moving towards a holistic approach to these ISMS, with the CDP Board responsible for governing the available security controls and directing agency IT and OT teams to implement these.

Agencies are not routinely conducting audits of third-party suppliers to ensure compliance with contractual obligations

CSP mandatory requirement 1.5 makes agencies accountable for the cyber risks of their ICT service providers and ensuring that providers comply with the CSP and any other relevant agency security policies. The ACSC has provided advice on what organisations should do when managing third party suppliers of ICT. The ACSC advises that organisations should use contracts to define cyber security expectations and seek assurance to ensure that these contract expectations are being met. While both agencies usually include specific cyber security expectations in contracts, neither is routinely seeking assurance that these expectations are being met.

The NSW Government has mandated the use of the 'Core& One' contract template for low-value IT procurements and the Procure IT contract template for high-value IT procurements. Both of these contracts contain space for the procuring agency to include cyber security controls for the contractor to implement. The Procure IT contract template also includes a right-to-audit clause which allows agencies to receive assurance around the implementation of these controls. TfNSW and Sydney Trains used the mandated contracts for relevant contracts examined as part of this audit.

TfNSW included security controls in all the contracts examined as part of this audit. Compliance with ISO27001 was the most commonly stated security expectation. Of the contracts examined as part of this audit, only one contract did not have a right-to-audit clause. This contract was signed in October 2016. While these clauses are in place, TfNSW rarely conducted these audits on its third-party providers. Of the eight TfNSW contracts examined in detail, only two of these had been audited to confirm compliance with the stated security controls.

Sydney Trains included security controls in all but one of the contracts examined as part of this audit. Sydney Trains did not require contractors to be compliant with ISO27001, but only required compliance with whole-of-government policies. Sydney Trains does not routinely conduct audits of its third-party suppliers, however it did conduct deep-dive risk analyses of its top ten highest risk IT suppliers. This involved a detailed review of both the suppliers' security posture and also the contract underpinning the relationship with the supplier.

The CDP funding for 2020–21 includes a workstream for strategic third-party contract remediation. This funding is to conduct some foundational work which will allow the CDP to make further improvements in future years. While this funding will not address gaps in contract requirements or management across all contracts, this workstream aims to reduce the risks posed by strategic suppliers covering critical assets. Similarly, work is currently underway as part of the CDP to conduct OT risk assessments for key suppliers to Sydney Trains in a similar way to the work undertaken for IT suppliers.

Sydney Trains has risk assessed its third-party suppliers but TfNSW has not done so

It is important to conduct a risk assessment of suppliers to identify high-risk contractors. This allows agencies to identify those contractors who may require additional controls stated in the contract, those who require additional oversight, and also where auditing resources are best targeted.

Sydney Trains has risk assessed all its IT suppliers and, as noted above, has conducted a deep-dive risk analysis of its top ten highest risk suppliers. TfNSW has not undertaken similar analysis of its key suppliers, however it has identified risks attached to each of its strategic suppliers and has documented these. As a result of not risk assessing its suppliers, TfNSW cannot take a targeted approach to its contract management.

TfNSW demonstrated poor records handling relating to the contracts examined as part of this audit

TfNSW was not able to locate one of the contracts requested as part of the audit's sample. Other documentation, such as contract management plans, could not be located for many of the other contracts requested as part of this audit. These poor document handling practices limits TfNSW's ability to effectively oversee service providers and ensure that they are implementing agreed controls. It also limits public transparency on the effectiveness of these controls.

The Transport cluster is not effectively implementing cyber security awareness training

Agencies are responsible for implementing regular cyber security education for all employees and contractors under mandatory requirement 2.1 in the CSP. TfNSW is responsible for delivering this training to the whole Transport cluster, including Sydney Trains. The Transport cluster has basic cyber awareness training available for all staff. TfNSW also offers additional training provided by Cyber Security NSW targeted at executives and executive assistants. While TfNSW has training available to staff, it is not delivering this effectively. TfNSW does not make training mandatory for most staff nor does it require staff to repeat training regularly. Even among those staff who have been assigned the training, completion rates are low, meaning that delivery is not effectively monitored. Cyber security training is important for building and supporting a cyber security culture.

TfNSW is responsible for creating and rolling out all forms of training to agencies within the Transport cluster. Both TfNSW and Sydney Trains have the same mandatory cyber awareness training that is automatically assigned to new starters. At the time of the audit, this training was not mandatory for ongoing staff. TfNSW does make additional cyber security training available to staff who can choose to undertake the training themselves, or can be assigned the training by their manager. All TfNSW cyber security training is delivered via online modules and it is the responsibility of managers to ensure that it is completed.

Cyber security training completion rates for both TfNSW and Sydney Trains are low. Only 13.5 per cent of staff across the Transport cluster had been assigned the Cyber Safety for New Starters training as of January 2021. Although this course is mandatory for new starters, only 53 per cent of staff assigned the Cyber Safety for New Starters training module had completed the course by January 2021. As a result, only 7.2 per cent of staff across the entire Transport cluster had completed this training at that time. In Sydney Trains, less than one per cent of staff had completed this training as at January 2021 and a further 7.6 per cent of staff have completed the 'Cyber Security: Beyond the Basics' training. These low completion rates indicate that TfNSW is not effectively rolling out cyber security training across the cluster.

In October 2020, the Department of Customer Service released 'DCS-2020-05 Cyber Security NSW Directive - Practice Requirement for NSW Government', which made annual cyber security training mandatory for all staff from 2021. In line with this requirement, TfNSW has advised that it will be gradually implementing mandatory annual training from July 2021 for all staff.

The Transport cluster undertakes activities to build a cyber-aware culture in accordance with the CSP, but awareness remains low

Increasing staff awareness of cyber security risks and maintaining a cyber secure culture are both mandatory requirements of the CSP. While TfNSW does undertake some activities to build a cyber aware culture, awareness of cyber security risks remains low. This can be demonstrated by the low training rates outlined above, and the 'Spot the Scammer' exercise, described in Exhibit 7. TfNSW is responsible for delivering these awareness raising activities across the cluster.

TfNSW frequently communicates with staff across the Transport cluster about various cyber security risks through multiple avenues. Both agencies use the intranet, emails and other awareness raising activities to highlight the importance for staff to be aware of the seriousness of cyber risks. Advice given on the intranet includes tips for spotting scammers on mobile phones, promoting the cluster-wide training courses, as well as various advice that staff could use when dealing with cyber risks in the workplace.

In addition to these awareness raising activities, TfNSW has also undertaken a cluster-wide phishing email exercise called 'Spot the Scammer'. This is outlined in Exhibit 7. This exercise was carried out in 2019 and 2020 and allowed the Transport cluster to measure the degree to which staff were able to identify phishing emails. As can be seen in Exhibit 7, the results of this exercise indicate that staff awareness of phishing emails remains low.

Appendix one – Response from agencies

Appendix two – Cyber Security Policy mandatory requirements

Appendix three – About the audit

Appendix four – Performance auditing

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