Billy Istono

working in cybersecurity & IT, focused on helping teams secure their systems from audits, penetration testing, to building security processes that actually work in the field, not just checklists on paper.

believing that strong digital security is built from small, consistent habits, not expensive tools alone. Besides technical work, I enjoy sharing and learning with the community to raise cybersecurity awareness.

cybersecurity penetration testing security posture it infrastructure
billy istono — 2026

MiniApp

Some projects I've worked on.