Elsa Ro
@elsaro
I hunt APTs and build detections across hybrid enterprise environments.
SpainWhat I'm looking for
At Telefónica, I hunt advanced persistent threats across hybrid infrastructures using Cortex XDR and Splunk SIEM. I build and automate threat-hunting workflows, identify detection gaps, and write custom detection rules from MITRE ATT&CK TTPs and threat intelligence.
I previously supported cyber defense operations at S2 Grupo, using CrowdStrike Falcon to monitor, investigate, and contain endpoint incidents for aerospace, nuclear, and public-sector clients. I also contributed to incident response through root-cause analysis and post-incident reporting.
My background in Physics and postgraduate training in reverse engineering and malware analysis support my hands-on static and dynamic analysis work. I’m motivated by staying ahead of emerging threats through threat intelligence, forensics, and practical detection engineering.
Experience
Work history, roles, and key accomplishments
Conducts proactive threat hunting for APTs across hybrid infrastructures using Cortex XDR and Splunk SIEM. Develops and automates threat hunting workflows and detection gap identification using Python scripts and no-code automation flows.
Education
Degrees, certifications, and relevant coursework
University of Alcalá de Henares
Micro-Credential, Cyber Threat Intelligence
2025 - 2025
Advanced training in Cyber Threat Intelligence, APT analysis, and CTI-driven incident response.
University of Málaga
Postgraduate, Reverse Engineering & Malware Analysis
2023 - 2023
Practical malware analysis including static and dynamic techniques.
S2 Grupo
Master Training, Cybersecurity
2021 - 2022
Training in pentesting, cyber defense, malware analysis, and consulting.
Complutense University of Madrid
Bachelor's Degree, Physics
2018 - 2022
Bachelor's degree in Physics from Complutense University of Madrid.
Availability
Location
SpainAuthorized to work in
Salary expectations
Job categories
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