Background
I’m Jimmy Barrios, a cybersecurity analyst based in South Florida with more than 17 years of experience supporting and securing enterprise technologies across 200+ retail locations at Duty Free Americas. My background combines hands-on work in endpoint security, SIEM investigations, cloud security, infrastructure, and the support of business-critical retail systems.
Today, my work is centered on security operations, incident response, and detection. I investigate alerts across SentinelOne MDR, Alert Logic SIEM, GuardDuty, and CloudWatch, respond to suspicious activity across endpoints and cloud workloads, and document incidents clearly for both technical teams and leadership. I’ve supported ransomware response, helped reduce recurring vulnerabilities through continuous attack simulation and remediation tracking, and worked on hardening controls across enterprise systems.
Outside of my day-to-day work, I’m an AWS Community Builder in the Security category. I use this site to document my growth in cloud security, detection engineering, and practical attack-and-defend learning. Here you’ll find AWS security labs, walkthroughs, technical notes, tools, and cyber news content built to help others learn by doing.
Security Focus
- Detection Engineering — Building SIEM rules mapped to MITRE ATT&CK, SentinelOne EDR, adversary emulation with Horizon3.ai
- Cloud Security — AWS security labs, Terraform-based deployments, IAM hardening
- Penetration Testing — PNPT-certified with hands-on practice in Active Directory attack paths, offensive security labs, and practical attack simulation
Community
- AWS Community Builder — Security category
- YouTube — @_Jimmybarrios — hands-on cloud security labs
- GitHub — jimmy-barrios
Certifications
| Cert | Issuer |
|---|---|
| Security+ | CompTIA |
| PNPT | TCM Security |
| PJPT | TCM Security |
| SAL1 | TryHackMe |
| CC - Certified in Cybersecurity | ISC2 |
| AWS Solutions Architect Associate | Amazon Web Services |