Helvio Junior
Chief Executive Officer at Sec4US
Paraná, Brazil
Summary
👤
Senior🎓
Top SchoolHelvio Junior is a cybersecurity executive and founder with eight years of focused offensive security experience and a long technical background stretching back to infrastructure and product testing roles. As CEO of Sec4US and StrataSec, he combines hands-on red team expertise, custom exploit development, and technical leadership to scale teams and training programs across Latin America. He has led red team engineering, performed complex web, mobile and network penetration tests, and built testing automation earlier in his career—skills reinforced by a postgraduate specialization in Network and System Security. Certified across an elite offensive security stack (OSCE3, OSEP, OSED, OSCP, OSWE and others), he also translates deep research into practical defenses and teaches offensive security courses. Notably, he pairs executive strategy with a practitioner’s skillset, having moved from automated product test systems to managing CSIRT/SOC integrations and financial fraud analysis. Based in Paraná, Brazil, Helvio blends entrepreneurial drive with rare technical depth in both offensive techniques and security operations.
8 years of coding experience
12 years of employment as a software developer
Pontifical Catholic University of Paraná
Portuguese, English
Stackoverflow
21reputation
0reached
3answers
0questions
Github Skills (81)
security10
introspection10
scanner10
code-injection10
gdb10
active-directory10
glibc10
python-api10
debugging10
bloodhound10
knife10
exploit10
metasploit10
discord10
ntlm10
Programming languages (8)
Github contributions (5)
sec4us-training/cheatsheets
Jul 2020 - Oct 2020
Contributions:23 commits, 7 pushes in 2 months
helviojunior/knowsmore
Jan 2023 - Feb 2023
KnowsMore is a swiss army knife tool for pentesting Microsoft Active Directory (NTLM Hashes, BloodHound, NTDS and DCSync).
Contributions:31 releases, 2 reviews, 235 commits in 1 month
swissntlmarmysecurityntds
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