~$ whoami
Janatan Tajik
Founder of Janreth · offensive-security engineer
I'm a software developer and offensive-security engineer (penetration testing, red teaming, malware development). I carry an attacker's mindset across the modern stack: applications, cloud, blockchain, and AI agents.
Two things I don't often see together: I build agentic systems from scratch, and I break systems for a living. That combination is why I founded Janreth, a cybersecurity company whose first product red-teams AI agents and maps the risk to the regulator's actual obligations. This site is where I share the work: write-ups, tools, and what I learn building and breaking.
Core Values
The principles behind how I build, break, and report.
Proof over claims
Every finding comes with a reproducible path and a source, not an assertion.
Attacker's mindset
I test systems the way someone who wants in would, so defenders aren't surprised.
Build to understand
I build the systems and tools I assess from scratch, so I know where they break.
Ethical by default
Offensive skills used to defend. Educational only, no real targets, no operational harm.