Looking for a job

Naftali da Costa

@naftalidacosta

Message

I investigate threats and strengthen infrastructure through Blue Team cybersecurity work.

Brazil

Message

What I'm looking for

I'm seeking an Associate Cybersecurity Analyst or SOC role focused on Blue Team operations, incident response, threat hunting, SIEM monitoring, and protecting infrastructure.

I'm building practical Blue Team cybersecurity skills through SENAC training, SENAI studies, simulations, and academic projects.

I've investigated insider-threat forensic cases, reconstructing event timelines and preserving evidence such as IP addresses, deleted files, emails, hashes, images, and other artifacts. I also analyzed a Kali Linux disk partition, documented credential-extraction activity, and consolidated evidence into an investigation report.

I developed a vulnerability-management project using Nessus Essentials Plus to identify flaws in network services and web applications, document findings, and draft client recommendations.

I'm seeking an Associate Cybersecurity Analyst role focused on incident response, threat hunting, SIEM monitoring, and infrastructure protection. My hands-on toolkit includes Wazuh, OPNsense, Active Directory, Wireshark, Nmap, Snort, Docker, Linux, Windows, and digital forensics tools.

Experience

Work history, roles, and key accomplishments

Current

Cybersecurity Analyst

Current

SecureNet Solutions

Jun 2021 - Present (5 years 3 months)

Monitored and analyzed security events to detect and respond to threats. Implemented security controls and conducted vulnerability assessments to protect organizational assets.

SIEM Incident Response Vulnerability Assessment Network Security Firewalls IDS IPS Threat Analysis Security Operations