Attack Surface Validation & Adversarial Testing

Prove your resilience. Stay ahead of attackers.

At SquareVertex, we help organisations move beyond passive defenses — delivering proactive offensive security services to test, validate, and continuously harden their cyber resilience.

Our Offensive Security practice brings together elite red team operators, AI-driven attack modelling, and advanced testing methodologies to simulate real-world adversaries — exposing vulnerabilities and validating your ability to detect, respond, and recover.

Red Teaming & Adversary Simulation

Test your organisation’s true resilience against sophisticated adversaries. We simulate targeted attacks to assess the effectiveness of your people, processes, and technologies under realistic threat scenarios. Our red team operations help you understand how an attacker would operate inside your environment — and where your detection and response capabilities need improvement.

➡️ Benefit: Provides true visibility into how your organisation would withstand a targeted attack, revealing gaps that traditional testing may miss and driving strategic resilience improvements.

Purple Teaming & Defense Validation

Optimise and validate your defensive controls in a collaborative environment. Our purple teaming engagements bridge the gap between offensive and defensive teams, enabling rapid feedback loops to enhance your detection, investigation, and response capabilities. We align tests with MITRE ATT&CK, providing measurable insights to continuously improve your SOC and security operations.

➡️ Benefit: Provides true visibility into how your organisation would withstand a targeted attack, revealing gaps that traditional testing may miss and driving strategic resilience improvements.

Breach Attack Simulation (BAS)

Continuously test your defenses with automated and manual attack simulations. Our BAS services emulate multi-stage attack chains — including initial access, lateral movement, privilege escalation, and data exfiltration — to assess how well your defenses perform against advanced persistent threats (APT) techniques. This allows for frequent validation of security controls and detection mechanisms without requiring full red team deployments.

➡️ Benefit: Enables continuous validation of security controls and detection coverage, helping companies move toward continuous assurance instead of periodic assessments

Zero Trust Validation

Prove the resilience of your Zero Trust architectures. We design and execute offensive testing to validate that Zero Trust policies, microsegmentation, identity controls, and access models hold under attack conditions. Our approach ensures that Zero Trust is more than a concept — it is demonstrably effective against modern threat actors.

➡️ Benefit: Proves that your Zero Trust controls are effective in practice — giving Boards, regulators, and customers confidence that modern access controls deliver real security outcomes.

Social Engineering

Assess and strengthen your human defenses. Our social engineering services test the susceptibility of your staff and physical security to real-world attacks, including phishing, vishing (voice phishing), smishing (SMS-based phishing), and physical intrusion testing. These engagements help organisations raise awareness, improve policies, and develop a strong human layer of defense.

➡️ Benefit: Reduces the risk of credential theft, unauthorised access, and social engineering attacks by strengthening employee awareness and validating physical controls.

Hardware & IoT Security Testing

Secure your connected devices and embedded systems. We perform deep technical testing of IoT devices, hardware components, and embedded systems, assessing both firmware and physical attack vectors. Our hardware security services help clients mitigate risks related to supply chain attacks, device tampering, and embedded software vulnerabilities — essential for organisations in critical infrastructure, automotive, and manufacturing sectors.

 

➡️ Benefit: Protects your business from supply chain risks, device-level compromise, and firmware-based attacks — essential for safeguarding critical infrastructure, smart devices, and OT environments.

Our difference    

Expertise and Talent

Practitioners with backgrounds in military cyber, critical infrastructure, and red teaming

AI-driven innovation: Accelerate discovery and improve testing through ML-assisted attack modelling and automated recon.

Trusted by leaders: Financial institutions, government, energy, and regulated industries across Europe.

 

Credentials

Our practice comprises globally recognized client-facing practitioners across 26 cyber domains with deep experience (avg 20+ years) conducting a different variety of GRC engagements.

Innovation and Automation

Our offerings are underpinned by further incorporating Machine Learning (“ML”), AI and Generative AI (“GenAI”) to accelerate innovation, automate labor intensive tasks and bring additional value with intelligent workflows.