![]() Without full visibility, defenders are less likely to be certain of the effectiveness of other protective methods such as perimeter security, network segmentation, or role-based access controls. Visibility is necessary for validating security controls used to define defensible architectures. One of the reasons for these fears is lack of visibility, or not knowing the data flows between the IT and OT networks or the assets that bridge this gap. Multiple times threat actors have attacked enterprise networks with ransomware and because of fear that compromise could spread to OT networks, these enterprises chose to shut down operations. This past year, Dragos saw the impact that interconnected IT and OT environments have on the operations of critical infrastructures. Distinguishing Where IT Stops and OT Begins Visibility is the starting point for robust cybersecurity programs that evolves into a metric by which to develop more mature and secure environments. Increased internal monitoring for level 0/1/2 intrazonal communication.Highlights ingress and egress traffic between trust zones.Enables the creation of metrics to justify security investments.Facilitates root cause analysis and incident response.Validates the effectiveness of firewall rules and network segmentation.Empowers visibility through asset management, change configuration, and asset identification.Identifies baseline behaviors within an environment to enhance threat detection.Increased visibility lends itself to the following efforts: are all enabled through better visibility within an environment. ![]() Asset inventories, change configuration management, vulnerability management, detection of rogue access points, threat detection, etc. Visibility plays a key role in most other cybersecurity controls providing information to scope and define the problems that need solving. Dragos 2021 ICS/OT Cybersecurity Year In Review Visibility: A First Step to Improve Your Security Posture Network visibility still hasn’t achieved maturity across the industry while being one of the quintessential cornerstones of a robust cybersecurity posture.ĭragos determined that 86% of service engagements have a lack of visibility across OT networks, down from 90% in 2020 compared to 2021. Dragos determined that 86% of service engagements have a lack of visibility across OT networks, down from 90% in 2020 compared to 2021. This blog is the first in a series expanding on each of these findings. ![]() The Dragos 2021 Year In Review highlighted four key findings on: OT network visibility, poor security perimeters, external connections to the industrial control systems (ICS) environments, and separation of IT and OT user management. ![]()
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