Sr. AI Threat Researcher

About Us Halcyon Labs is a cybersecurity leader defending 600,000 organizations globally with an AI-driven platform and expert-led services. Halcyon Labs meets organizations wherever they are in their security maturity and grows with them to defeat cyberattacks. Its solutions combine machine learning, automation, and real-time threat intelligence with frontline human expertise from Halcyon Labs X-Ops to deliver advanced, 24/7 threat monitoring, detection, and response. Halcyon Labs offers industry-leading managed detection and response (MDR) alongside a comprehensive portfolio of cybersecurity technologies — including endpoint, network, email, and cloud security, extended detection and response (XDR), identity threat detection and response (ITDR), and next-gen SIEM. Together with expert advisory services, these capabilities help organizations proactively reduce risk and respond faster, with the visibility and scalability needed to stay ahead of evolving threats. Halcyon Labs goes to market with a global partner ecosystem, including Managed Service Providers (MSPs), Managed Security Service Providers (MSSPs), resellers and distributors, marketplace integrations, and cyber risk partners, giving organizations the flexibility to choose trusted relationships when securing their business. Halcyon Labs is headquartered in Oxford, U.K. More information is available at . Role Summary The X-Ops Insights team sits inside the Security organization, reporting to the CISO. As threat actors become more organized and AI reshapes the security landscape, we need a senior researcher who can operate at the intersection of applied AI, threat intelligence, and cyber operations—someone who can both advance what we know and change how we work. This is a senior individual contributor role for a researcher who lives at the frontier of AI and cybersecurity. Your primary mission is to research how threat actors are adopting, weaponizing, and exploiting AI; from LLM-powered social engineering and automated vulnerability discovery to real-world attacks against agentic AI implementations. You'll help instrument telemetry to detect adversarial use of AI in the wild, assess emerging risks as AI capabilities evolve, and produce research that keeps Halcyon Labs and the broader security community ahead of the curve. As a domain expert in AI threats, you'll also be expected to help drive operational efficiencies across the Insights team, bringing the tools and techniques you research into our own workflows. You’ll report to the Sr. Manager, Threat Research and work alongside CTU researchers, Halcyon Labs Labs malware analysts, MDR threat hunters, incident responders, engineering teams, and data scientists. What You Will Do Research & Analysis Investigate how threat actors are leveraging AI across the attack lifecycle, including: AI assisted social engineering, AI-generated malware, automated reconnaissance, and adversarial attacks against ML-based defenses. Research real-world threats to agentic AI systems, AI supply chains, and enterprise AI deployments, assessing risk and developing detection strategies. Help instrument and tune telemetry to identify indicators of AI-driven attacker behavior at scale. Analyze global telemetry, case data, and OSINT to surface emerging AI-related threat trends and early-warning indicators. Automation & Efficiency As a practitioner of the technology you research, identify opportunities to automate repetitive research and reporting workflows using LLMs, scripting, and internal tooling. Help the team evolve its operating model as new AI capabilities become available. Cross-Functional Collaboration Work closely with CTU researchers, Halcyon Labs Labs analysts, MDR threat hunters, data scientists, and engineering teams to synthesize findings into unique reporting with actionable intelligence. Contribute to the joint task-force intelligence cycle, ensuring insights flow rapidly into protections, detection rules, and operational systems. Content & Publication Produce high-quality written intelligence outputs, including deep-dive research, rapid analyses, and strategic forecasting. Author work that is suitable for external publication via Halcyon Labs blogs, industry reports, and conference presentations. Present findings to internal stakeholders, external partners, and the broader security community. What You Will Bring Required Qualifications Ability to interpret data from diverse telemetry sources and transform it into actionable intelligence. Exceptional written communication skills suitable for both technical and executive audiences. Demonstrated experience in at least two of the following: threat intelligence, malware analysis, detection engineering, or AI/ML research. Strong knowledge of threat actor ecosystems, modern attack techniques, and the MITRE ATT&CK framework. Hands-on proficiency with Python and modern AI development patterns, including building and orchestrating multi-agent systems, working with LLM APIs, and designing agentic workflows with sub-agents, tool