OniDef

Onidef is a Polish cybersecurity firm founded on the principle that robust security should be standard, not a luxury. Staffed exclusively by experienced senior practitioners with over a decade in the field, the company addresses persistent security gaps overlooked by conventional solutions. Unlike commodity-focused providers, Onidef emphasizes delivering accountable, thorough security practices rather than quick fixes. Their clients, primarily Series-B to public companies in FinTech, SaaS, healthcare, and critical infrastructure sectors, seek trustworthy expertise to proactively manage risks and maintain confidentiality. The firm operates under strict principles: senior-led teams, verifiable findings, engineering-driven compliance, and ongoing relationships via retainers. They selectively accept engagements, prioritizing integrity and rejecting work that doesn't align with their standards to ensure high-quality outcomes and sustained trust.