Job Description Experian, a global leader in providing information solutions to organizations and consumers, is seeking a highly motivated Senior Cyber Threat Hunter to join our Cyber Fusion Center (CFC) team as a fully remote position located in Costa Rica.
RESPONSIBILITIES As a member of Experian's Global Security Office (EGSO) this individual will research and investigate hosts and networks to identify adversary tools, techniques, and procedures (TTPs), investigate potential exploitation of systems, and provided reactive investigate support during security incidents to identify adversary behavior elsewhere in the environment.
They will also be expected to participate in several different areas within Security Operations and Incident Response process; these activities may include malware reversing, digital forensics, use case development, security control testing, and hunt plan development.
The candidate for this role must have strong personal skills involving report writing, presentation, organization, and communication.
This is a technical position supporting the strategies of the Global Security Operations Center and Experian's Chief Information Security Officer.
You will report directly to the Senior Manager, Cyber Threat Hunting as part of the CFC's Incident Response program.
KEY RESPONSIBILITIES INCLUDE Implement proactive threat hunting activities based on intelligence, telemetry, and hypotheses to identify malicious activity across host, network, and cloud environments.
Develop and refine hunt queries, detections, and rules (Yara, Sigma) to support continuous improvement of detection engineering use cases.
Monitor the evolving threat landscape, vulnerabilities, and adversary TTPs, applying this knowledge to enhance hunting strategies.
Document hunting methodologies, queries, findings, and recommended actions in SOPs and playbooks aligned to MITRE ATT
