Marcelo: Email & Phone Number

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Security Researcher at HackerOne|United States

Position:

Security Researcher at HackerOne

Location:

United States

View Marcelo's Email

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Last updated: 2026-10-17

Updated: 2026-10-17

Found email addresses for Marcelo:

Business emails:

.******o@hackerone.com

Personal emails:

c**************h@pm.me

Found phones for Marcelo:

+1-480-***-**19,

+1-909-***-**65,

+1-870-***-**29,

+1-623-***-**10

Prospect analytics

Current work details

DepartmentComputer & Network Security, Renewables & Environment

A different Marcelo?

Work Experience

Security Researcher at HackerOne

Mar 2025 - Current

Security Engineer at Handshake AI Fellowship

Sep 2026 - Current

Self-Hosted Cloud & Network Infrastructure at no company name

Sep 2023 - Current

Capture the Flag - (CTF) Competitor at Hack The Box

Dec 2024 - Current

Marcelo started working in 2023, then the employee has changed 3 companies and 3 jobs. On average, Marcelo works for one company for 1 year 9 months.

Marcelo is proficient in English and Japanese. Their professional focus is AI Policy, Governance, and Regulation, Amazon Web Services (AWS), and Application Security across 3 core areas.

Marcelo holds CompTIA Secure Infrastructure Specialist – CSIS Stackable Certification, CompTIA Security+ Certification, and CompTIA IT Operations Specialist – CIOS Stackable Certification certifications and has been awarded DEFCON 34 - CTF Competitor and Phi Theta Kappa - Honors Society

Education

Bachelor of Science at Western Governors University

Frequently Asked Questions

What is Marcelo's email address?

SignalHire found verified email addresses for Marcelo, both business and personal. Their business email is .******o@hackerone.com, and personal emails include c**************h@pm.me.

What is Marcelo's phone number?

SignalHire found multiple verified phone numbers for Marcelo: +1-480-***-**19, +1-909-***-**65, and +1-870-***-**29.

How do I contact Marcelo at HackerOne?

You can reach Marcelo through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is Marcelo's professional background?

They have held roles including Security Engineer, Self-Hosted Cloud & Network Infrastructure, and Capture the Flag - (CTF) Competitor at companies such as Handshake AI Fellowship, no company name, and Hack The Box. Their education includes Bachelor of Science from Western Governors University.

Is Marcelo's contact information up to date?

Yes. Marcelo's SignalHire profile was last updated on 17 October 2026, reflecting their current position as Security Researcher at HackerOne in San Francisco, California, United States.

Marcelo Namesakes

Name

Company

Position

Marcelo

Self-employed

CEO

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Marcelo

VOA INTERNET

CEO

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Marcelo

Meu Congá

CEO

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