By G3kSec

Breaking Things.
Making Them Safer.

I find security vulnerabilities in web applications through manual testing and bug bounty hunting. Here you'll find my bug bounty work, tools, and writeups.

600+HackerOne Rep
15+Vulns Patched
7+Orgs Secured
1Writeups

Bug Bounty

My activity on vulnerability disclosure platforms.

HackerOne Profile
G3kSec

@g3ksec

Security Researcher

600+Reputation
15.56Impact
7.00Signal
View Full Profile

Hunting In

Public ProgramsPrivate Programs

Recognitions & Events

Events I've attended and public acknowledgements.

Mercado Libre Hacking Event
20253rd PlaceBug BountyMercado LibreOnline Event

Mercado Libre Hacking Event

Participated in the live hacking event organized by Mercado Libre, which was open to researchers in its bug bounty program on HackerOne.

Projects

Tools I've built to solve security problems.

0xHashFavicon
Favicon fingerprinting tool to extract Shodan/Fofa compatible MurmurHash3 signatures. Ideal for asset discovery, infrastructure mapping, and identifying hidden attack surfaces.
Next.jsTypeScriptTailwind CSS v4OSINT

Next Project...

Coming Soon

Writeups

Bug reports and research I've published.

© 2026 Luciano Griffa (Aka. G3kSec)