the team would identify and remediate the threat as quickly as possible. In addition to this, the SOC will also carry out forensics, tracing back through the attack lifecycle to locate the source of threat. This will give a better understanding of why it was successful, and of how the organisation can prevent it from happening again in the future. Critically, the SOC must be managed by experts with a holistic vision, to eff ectively maintain technical relationships on a global scale that allow it to perform intelligent analysis, adding value to its service, and enabling it to detect threats or prevent attacks.
IT AND OPERATIONAL TECHNOLOGY NEEDS CONVERGENCE Although technological and procedural needs are similar for both the world of IT and Operational Technology (OT), the priorities for the OT environment are radically diff erent. The OT world is comprised of specialist technology.
This includes electronic devices with diff erent operating systems (many of them legacy), diff erent logic programming, special protocols for industrial needs and industrial control systems. As far as cyber security is concerned, the fundamental pillar for OT is the operation’s availability. Frequently, an incident in the OT infrastructure can be catastrophic and it is necessary to have professionals with experience both in IT and OT systems – a very scarce skillset. Cyber criminals know about both IT and OT worlds, and fully understand the sensitivity of OT networks and systems. For this reason, it is important to converge both IT and OT security into the SOC. This will also help the organisation meet the growing list of industrial compliance and regulation standards, which can also act as a baseline of defence against basic weaknesses and security threats.
A convergent SOC must cover all levels of the
protection model for industrial control systems, maintain a high visibility of all layers and be able to perform multi-vector threat analysis and response. Above all, the work should not only be done by SOC specialists but should also provide facilities for collaborative work with the company’s expert operational personnel. Dialogue between security
Cyber criminals know about IT and OT – so it’s important to converge the security of both into the SOC.
specialists and operators is essential for the development of a solid understanding of critical assets, how they work, how they are connected, and how they could be fi xed.
WHY TRUST IS NOW PARAMOUNT A convergent SOC with experienced personnel is very important; however it will not be able to fulfi l its mission without trust. SOC teams must provide an uninterrupted service, and handle several business models (in-house, ‘as a service’ or hybrid), taking into account that, in most cases, a better return on investment will be provided by the ‘as a service’ model. The best way to protect the infrastructure of the industrial sector, avoid ‘alert fatigue’ and get a better return on investment is to have a specialised SOC. By having a dedicated SOC at the heart of security, organisations will be given the chance to act in advance of incoming threats. Steve Rymell (pictured left) is Head of Technology at Airbus CyberSecurity. Airbus CyberSecurity is at the it-sa 2019 IT Security Expo and Congress – Hall 10.1 / 10.1-428.
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