Red Teaming
What is red teaming?
Red teaming is a cybersecurity practice in which ethical hackers simulate real-life attack scenarios to test how well an organization can detect, respond to, and withstand a breach. Inspired by military wargaming, it has evolved into a critical component of modern security strategies. Unlike a traditional penetration test, which often has a defined scope and occurs with the knowledge of the IT team, red teaming is broader and stealthier. The goal isn’t just to find a list of technical flaws, but to emulate how a determined adversary might exploit weaknesses across people, processes, and technology. Crucially, the blue team (defenders) is typically unaware the test is happening, which provides a more authentic picture of response readiness.
Why is red teaming valuable?
- Holistic evaluation
It identifies both technical and human vulnerabilities across systems, personnel, and infrastructure. - Incident response testing
It challenges your blue team to detect, react to, and mitigate threats in real time. - Strategic insight
Findings inform executive-level decisions around security investments, policies, and business continuity planning. - Organisational learning
Red teaming exercises foster a culture of resilience, with both defenders and attackers learning from each other.
Red vs. blue vs. purple teams
- Red team
Simulates real-world adversaries by launching covert attacks to expose weaknesses. - Blue team
Represents the internal defenders responsible for monitoring, detecting, and responding to threats. - Purple team
A collaborative model where red and blue teams work together, sharing insights to improve both offensive tactics and defensive capabilities.
How red teaming works
- Reconnaissance
Gathering intelligence about the target. - Initial access
Breaching the perimeter via phishing, exploiting vulnerabilities, or social engineering. - Privilege escalation
Gaining deeper access within the network. - Lateral movement
Navigating through systems to reach critical assets. - Data exfiltration or goal completion
Stealing data, altering systems, or accessing sensitive environments. - Reconnaissance
Red teaming in OT environments
Operational Technology (OT) systems control critical infrastructure like energy plants, water systems, and manufacturing facilities. Red teaming in these environments focuses on identifying weaknesses in Industrial Control Systems (ICS), SCADA platforms, and PLCs (Programmable Logic Controllers). Due to the interconnected and legacy-heavy nature of OT environments, traditional IT security approaches often fall short. Red teaming in OT not only tests for technical vulnerabilities but also uncovers flaws in physical security, network segmentation, and human processes.
Given the potential for real-world safety impacts, these exercises are both sensitive and vital.
Continuous Automated Red Teaming (CART)
While traditional red teaming is often periodic, Continuous Automated Red Teaming (CART) introduces a new paradigm. CART uses automation and advanced tooling to simulate attacks on an ongoing basis. This allows organisations to continuously evaluate their readiness and adapt more quickly to emerging threats. CART reflects the reality that cybersecurity isn’t a one-off event. It supports a dynamic defense posture, enabling teams to stay one step ahead in an environment where adversaries never rest.
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