Practitioner-Led Offensive Security

About ValyrSec

We do not just fill reports - we expose the actual kill chains that put your business at risk

ValyrSec is an offensive security boutique born from a real need replacing generic automation with deep manual research. We focus on validating complex attack paths and delivering remediation guidance that engineering teams can actually implement. Our goal is to transform security into a driver of growth and resilience not a bureaucratic hurdle

Precision

Focused testing on your most critical assets. No generic noise only targeted manual exploitation

Stealth

Operating under the radar to simulate real adversaries and test your detection and response capabilities

Impact

Every technical finding is translated into business risk with actionable recommendations that drive real resilience

Our Story

Through years on the front lines of offensive security we saw a recurring failure reports focused on quantity over quality. Long tedious documents that sit on a shelf because engineering teams do not know how to act on them

ValyrSec was created to break the mold

We bring a researcher's mindset not a vendor's. We dive deep into Web API Infrastructure and Cloud environments to find the complex vulnerabilities that automated scanners simply cannot see

At ValyrSec the job is not done when a vulnerability is found - it is done when it is closed and verified

Technical Leadership

Yaniv Avisror

Yaniv Avisror

Founder | Offensive Security

Offensive security specialist with vast experience in manual penetration testing and adversary simulation. Expert in translating technical risks into business narratives and guiding organizations in building effective defense plans

Red TeamingCloud SecurityAdversary Simulation
Maor Kamisa

Maor Kamisa

Co-Founder | Offensive Security

Certified penetration tester with deep expertise in enterprise infrastructure. Specializes in Lateral Movement advanced evasion and investigation-driven testing in complex environments

Active DirectoryNetwork PentestingEvasion

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