ReactiveZero delivers advanced penetration testing, red teaming, threat hunting, and digital forensics — led by OSCP, CEH, and CHFI-certified experts. We help organizations neutralize threats across IT, OT, IoT, and cloud environments.
When an incident hits, our certified responders help you contain the breach, eradicate the attacker and recover operations, then document what happened for NIS2 and DORA reporting duties. Retainers keep us on standby before you need us.
We conduct thorough, goal-oriented penetration tests to identify and exploit vulnerabilities across networks, applications, and cloud environments. By thinking like attackers, we help you understand your true exposure and provide clear, prioritized recommendations to improve your security posture.
We simulate real-world adversaries to test your organization’s detection, response, and resilience against advanced threats. Our red team engagements uncover blind spots across people, processes, and technology — providing actionable insights to strengthen your defenses where it matters most.
We perform in-depth manual and automated code reviews to uncover hidden vulnerabilities, logic flaws, and insecure practices across web, mobile, and cloud applications. Our focus is on identifying exploitable issues before attackers do — strengthening your application’s security from the inside out.
We perform deep forensic investigations across software systems and hardware devices to uncover evidence of compromise, data exfiltration, or insider threats. From firmware analysis and memory dumps to application artifacts and disk forensics, we help you reconstruct incidents, attribute malicious activity, and support legal or internal response actions with confidence.
We design and execute realistic phishing simulations to test and train your employees against social engineering attacks. Each campaign is tailored to your organization’s environment, helping you measure risk, raise awareness, and build a stronger human firewall through actionable insights and post-campaign reporting.
Our consulting teams specialize in custom engagements: from emergency IR and malware analysis to proactive security architecture reviews, cloud misconfig detection, and phishing simulations.
Available 24/7 to help contain, investigate, and recover from active security incidents.
End-to-end reviews of systems, configurations, and code to help you stay ahead of adversaries.
We offer a no-cost, limited-scope penetration test to demonstrate the depth and quality of our work. Over the course of two days, our team conducts a focused security assessment on a predefined target — such as a web app, exposed asset, or cloud environment — to showcase how we uncover real vulnerabilities, provide clear reporting, and deliver value from day one. It’s a risk-free way to experience how ReactiveZero can strengthen your security posture.
Ready to strengthen your security posture? Let's discuss how we can help protect your organization.