The team behind PromptSentry

Securing AI with discipline and craft

We built PromptSentry because AI adoption is moving faster than the guardrails meant to protect the people using it.

Our mission

One mission, two audiences

PromptSentry is a product of Five Nines Consulting. Whether we're defending a corporate MCP pipeline from prompt injection or protecting a middle-schooler from generative manipulation, the goal is the same: ship AI without shipping the risk.

The people building it

A small team focused on getting the detection pipeline right and the customer experience honest.

Vasiliy

Founder & CEO

Founded Five Nines Consulting to bring rigorous operational security into the AI stack. Sets PromptSentry's direction across enterprise security and youth safety, and leads relationships with our earliest design partners.

David

Lead Engineer

Architect of PromptSentry's multi-stage detection pipeline. Designed the pattern fast-path, the AI-assisted classifier escalation, and the MCP-native integrations that protect agentic tool calls before they reach the model.

Precious

Go-To-Market & Product

Bridges engineering decisions with what customers actually need. Leads European EdTech outreach and enterprise adoption, keeping the roadmap aligned with GDPR, COPPA, and FERPA realities on the ground.