About CISO Marketplace
Built by practitioners, for the people who own the risk.
CISO Marketplace is a cybersecurity services and advisory platform operated by QSai LLC. This site is its services arm: offensive security, AI security and the full security program, delivered by practitioners.
- Anthropic Claude Partner· Official partner
- OpenAI TAC· Verified firm
- 400+ technology suppliers· Risk-to-solution sourcing
- Cloudflare Startup Partner
Our story
Rebuilt around practitioners and frontier AI.
CISO Marketplace was founded by Andrew Ostashen, Managing Member of QSai LLC, an offensive security practitioner and RIT alum who previously founded Vulsec. When Vulsec closed during COVID, he rebuilt from scratch around a simple idea: security leaders need one place to find expertise, tools and trusted answers, and frontier AI changes how quickly that can be delivered.
Today the ecosystem spans the services on this site, the MicroSec Tools catalog, research and templates, a practitioner membership and a partner network. The firm is an official Anthropic Claude Partner and verified under OpenAI's Trusted Access for Cyber program.
Mission
What we are here to do.
Practitioner-led security
Help organizations build security programs that hold up against real attackers, delivered by people who do the work, not resold from a directory.
AI where it earns its place
Use frontier AI to make assessments deeper and delivery faster, with a practitioner accountable for every finding that reaches a client.
A connected ecosystem
Tools, research, a practitioner membership and a partner network, so security leaders can find the right answer whether they build it, buy it or hire it.
Approach
How we work with clients.
Your risk, not a template
We start from your environment, constraints and what a good outcome means for you, and scope to that in writing.
Evidence over opinion
Every finding is reproduced and evidenced; every price starts from a published tier; every commitment is in the SOW.
Keep improving
Methods, tooling and the catalog evolve with the threat landscape, and the work shows its standards openly on our methodology page.
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