Looking for a job

Leticia Vieira

@leticiavieira1

Cybersecurity analyst at Telefônica Vivo who assessed endpoint defenses against malware and tracked pentest remediations.

Brazil

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What I'm looking for

I’m looking to grow into SOC and Blue Team work, focusing on security monitoring, alert triage, and incident response.

At Telefônica Vivo, I studied malware behavior in sandboxes and assessed endpoint defenses, documenting evidence and results. I also mapped defensive capabilities and helped create documentation connecting attack and defense teams.

In Telefônica Vivo’s Offsec Ops Team, I supported pentest planning by checking scope and prerequisites, tracking remediation, and verifying retests. I’m now focused on SOC and Blue Team work, building on academic experience with Wazuh monitoring, alert triage, and initial incident response.

Experience

Work history, roles, and key accomplishments

Analista de Cibersegurança Ofensiva (Pentest)

Telefônica Vivo

Jun 2025 - Mar 2026 (9 months)

Validated scope, access, and prerequisites for pentests, prioritized tests on critical applications, tracked remediations and retests, and managed the pentest queue.

PenTest+Vulnerability Management Retesting Prioritization Stakeholder Management ServiceNow

Analista de Cibersegurança - Purple Team

Telefônica Vivo

Mar 2024 - Jun 2025 (1 year 3 months)

Executed structured malware behavior studies in sandbox, validated EDR/XDR controls, and mapped defensive capabilities with integrated documentation for KPI extraction.

Malware Analysis Sandbox EDR XDR Sandbox Evasion Techniques Crypters Packer Documentation KPIs

Estagiária de Suporte de TI - Equipe de Sistemas Operacionais

Telefônica Vivo

Feb 2023 - Mar 2024 (1 year 1 month)

Implemented security hardening standards on Windows and Linux based on CIS Controls, supported server maintenance, and participated in CABs for patching windows.