Operational Technology Cyber Security Services

Cyber risk assessments often attempt to analyse the risk posed by individual control deficiencies. This may give an inaccurate view if not considered in the wider context of a defence-in-depth architecture. We map out the pathways across the environment that could be exploited by threats, assessing the controls in operation along each pathway to determine the level of threat exposure.

This allows to assess the risk of cyber-attack rather than focusing on individual control deficiencies. Where an OT Security Posture Assessment has been recently performed we use this as the basis of the threat vector analysis to deliver efficiency in the service.

 

Bridewell have extensive expertise in most common cyber security frameworks used within OT environments, including the NCSC CAF, ISA/IEC 62443, and NIST CSF. We perform detailed gap analysis against these frameworks, to identify areas where improvements are needed to meet requirements.

We contextualise any gaps identified, allowing us to provide targeted recommendations for remediation tailored to your specific environment.

 

The accuracy and completeness of OT asset data may be called into question if it has not been regularly maintained. This in turn can hamper the ability to maintain an up-to-date understanding of presence of firmware vulnerabilities across the environment.

We have a range of techniques that can be adopted to discover assets & vulnerabilities within any given environment, often without the need for the addition of any specialised tooling.

 

Staying informed of new emerging threats allows you to keep ahead of the risk they may pose to your systems. By leveraging sector-specific intelligence and real-time data analysis, our team delivers tailored threat insights and actionable recommendations that enhance detection and response capabilities for each client.

We build your policy framework as either as standalone set explicitly for your OT environment or fully integrated into the wider business cyber security policies. Bolster the policies with a set of processes to provide efficient and consistent delivery of policy requirements.

A target operating model defines the business structure, roles, competencies and resource levels to deliver and operate effective cyber security. Aligned to your specific needs, we can define comprehensive models to cover your entire operation, or focussed in individual areas where, for example, new security capabilities are being introduced.

A target operating model defines the business structure, roles, competencies and resource levels to deliver and operate effective cyber security. Aligned to your specific needs, we can define comprehensive models to cover your entire operation, or focussed in individual areas where, for example, new security capabilities are being introduced.

The ISA/IEC 62443 series of standards defines a range of controls and processes designed specifically for the electronic security of industrial automation and control systems (IACS). Bridewell’s OT specialists are not only certified against these standards but are also active contributors to their ongoing upkeep and development. We deliver a full range of services against the framework to support its implementation within your environment.

Expert advice and guidance from our OT technical specialists on delivering cyber security within safety critical systems. With a TÜV Rheinland Functional Safety Engineer on staff, we can deliver against IEC 61508, IEC 61511, HSE OG86, and The Institute of Engineering and Technology's Code of Practice for Cyber Security and Safety.

Training & awareness on any aspects of OT cyber security from our OT technical specialists. Delivered as standalone sessions or integrated into wider business training & awareness initiatives.

Our OT technical specialists have hands-on experience in OT engineering, and are adept at baking cyber security into industrial control systems to make them inherently secure and resilient to cyber attack.

 

Work with our blended teams of security architects and OT technical specialists to design secure and resilient inter-connected OT architectures and solutions, whilst minimising threat vectors. We deliver high and low-level designs detailing system and network architectures, and the specification of security controls and configuration. This is accompanied by a full set of security requirements for action by the delivery team.

Remote access presents the most significant initial access vector for threats seeking to target OT systems. Develop secure remote access for your OT estate, with solutions with ranging from VPN deployments to sophisticated zero-trust models.

 

Reference architectures accelerate delivery whilst maintaining consistency in system designs. Our specialists develop libraries of modular reference architectures to meet the specific needs of your environment. Modules are designed to be combined into holistic platforms that deliver commonality whist also meeting security compliance requirements. 

Sources of security event data in OT environments may be scarce and extraction to management platforms such as SIEM difficult to achieve. Bridewell have many years of experience dealing with this challenge, and have developed multiple mechanisms to gain necessary data to allow effective security monitoring. Through our service we identify sources of event data, options to deploying tooling for further coverage, and mechanisms to extract data without introducing additional vectors for attack.

Having pre-defined plans to respond rapidly to indicators of threat can prevent exploit, infection, and harm to systems. Threat response plans define the inter-relationships between systems, the minimum connectivity required to maintain essential operations, how to enact this mode, and aspects to be considered taken prior, during and after enactment.

Having an effective means to respond to a cyber incident is vital to minimise impact to critical operations. We develop and mature your processes, procedures and playbooks, then verify their effectiveness with the support of the Bridewell Incident Response team.

As one of the most important initial access and lateral movement protection controls, operating securely configured firewalls is a vital defence to protect against the ingress of threats. We deliver resilient firewall architectures and robust firewall rule sets into complex environments to deliver the perimeter security and internal segregation controls.

OT security sensors that provide asset & vulnerability discovery and threat detection can be valuable tools to compliment your security infrastructure. If not utilised correctly, however, you are unlikely to obtain the full benefits of these products.

With experience across multiple vendors and combining our deep expertise in OT control systems, protocols and networking, we can ensure security sensors are delivered to achieve maximum benefit within your specific environment.

Defend your organisation against cyber threats and gain access to a range of leading SOC services, supported by industry leading security analysts and cyber threat intelligence.

In the face of new or heightened threats, implementation of temporary security measures to protect your OT systems may be required until threat has passed or been neutralised. Rapid response is vital to ensure these measures can be implemented before the threat causes harm. By understanding services and connections that can be temporarily halted whilst still maintaining operations can prevent the ingress of threats.

Our SLA-backed incident response services, for either retained or emergency incident response, gives you 24/7 access to our digital forensic incident response (DFIR) professionals. Our DFIR team will be on call 24/7 to respond to a security incident, providing digital forensics with chain of custody for evidence that can be trusted for use in legal or civil proceedings and/ or litigation.

Defend your organisation against cyber threats and gain access to a range of leading SOC services, supported by industry leading security analysts and cyber threat intelligence.

In the face of new or heightened threats, implementation of temporary security measures to protect your OT systems may be required until threat has passed or been neutralised. Rapid response is vital to ensure these measures can be implemented before the threat causes harm. By understanding services and connections that can be temporarily halted whilst still maintaining operations can prevent the ingress of threats.

Our SLA-backed incident response services, for either retained or emergency incident response, gives you 24/7 access to our digital forensic incident response (DFIR) professionals. Our DFIR team will be on call 24/7 to respond to a security incident, providing digital forensics with chain of custody for evidence that can be trusted for use in legal or civil proceedings and/ or litigation.