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Knostic
Need-to-know access controls for enterprise AI.
Claimed API Teams
Toolglade’s take
Knostic is an independent, seed-stage startup (roughly $19M disclosed as of August 2026) addressing a real and narrow problem: LLM oversharing in tools like Copilot and Glean. Its founders are well-regarded in security, and it has won credible industry competitions, which lends legitimacy. That said, it is early-stage, its category is nascent, and its value depends heavily on which AI assistants you deploy. Pricing is sales-led with no public list, so budget expectations should be set through a direct conversation.
About Knostic
Knostic is a GenAI knowledge-security platform that prevents enterprise AI assistants like Microsoft 365 Copilot and Glean from oversharing sensitive data. It simulates LLM responses across user access profiles, detects oversharing, and can block or remediate answers so they follow need-to-know rather than can-access logic. Founded in 2023 by well-known security veterans and backed by around $19M in disclosed funding, it is an independent but early-stage vendor in a nascent category.
Knostic tackles a specific and increasingly urgent enterprise problem: LLM-powered assistants such as Microsoft 365 Copilot and Glean can synthesize and surface information a user technically has permission to reach but shouldn't necessarily see, creating an oversharing and data-leakage risk that traditional permission and DLP tools miss. Knostic's platform simulates and tests how these assistants respond across different user access profiles, detects oversharing patterns, and can dynamically block or remediate responses so answers follow need-to-know logic aligned to organizational roles. The company frames this as a readiness and governance layer for safe enterprise AI adoption. It integrates with the AI search and assistant tools organizations are deploying, provides monitoring and prompt-simulation capabilities, and surfaces where knowledge boundaries are being crossed. This positions Knostic alongside data-governance tooling (such as Microsoft Purview) as a complement that catches inference-level exposure those tools don't address. Knostic was founded in 2023 by cybersecurity veterans Gadi Evron and Sounil Yu and is based in Herndon, Virginia. It is independent and venture-backed: it raised an $11M seed round led by Bright Pixel Capital in March 2025 and later added a $5M SAFE investment as an RSAC 2025 Innovation Sandbox Top 10 finalist, bringing disclosed funding to roughly $19M. It won notable startup competitions (RSA Conference Launch Pad and Black Hat Startup Spotlight in 2024), but remains an early-stage vendor in a fast-forming category.
TL;DR
Knostic is a GenAI knowledge-security platform that prevents enterprise AI assistants from oversharing sensitive data. It simulates and tests LLM responses across user access profiles and enforces need-to-know controls in tools like Microsoft 365 Copilot and Glean. Founded in 2023 by security veterans Gadi Evron and Sounil Yu, it has raised roughly $19M and remains independent. It is credible but early-stage in a nascent category.
Company overview
Knostic was founded in 2023 by Gadi Evron and Sounil Yu and is headquartered in Herndon, Virginia. It focuses on securing enterprise adoption of LLM-based assistants by preventing oversharing and enforcing need-to-know access.
The company is independent and venture-backed. It raised an $11M seed round led by Bright Pixel Capital (with SVCI, DNX Ventures, Seedcamp and angels) in March 2025, and added a $5M SAFE as an RSAC 2025 Innovation Sandbox Top 10 finalist, bringing disclosed funding to roughly $19M.
Product features
Knostic simulates how AI assistants answer questions across different user access profiles, detecting cases where the assistant would surface information beyond a user's need-to-know. It analyzes responses against user context and access policy and can dynamically block or remediate risky answers in real time.
It integrates with tools such as Microsoft 365 Copilot and Glean and positions itself alongside data-governance tooling like Microsoft Purview, catching inference-level exposure that static access and DLP controls miss. Prompt simulation, response analysis and continuous monitoring are core capabilities.
Target market
Mid-to-large enterprises and regulated organizations deploying LLM assistants such as Copilot and Glean, where data-leakage and oversharing risk is a barrier to adoption.
Buyer personas
End users
Security analysts and AI-governance teams who run simulations and manage oversharing findings.
Buyers
CISOs and heads of data security responsible for safe AI rollout.
Key influencers
Microsoft 365 administrators, compliance officers and data-governance leads.
Ideal customer profile
A mid-to-large enterprise, often in a regulated sector, actively deploying Microsoft 365 Copilot or Glean and needing to prove that AI answers respect need-to-know boundaries.
Funding & performance
Approximately $19M in disclosed funding: an $11M seed round led by Bright Pixel Capital (March 2025) plus a $5M SAFE tied to the RSAC 2025 Innovation Sandbox. Reported totals vary slightly across sources.
Pros & cons
Pros
- Targets a real, under-addressed problem (inference-level oversharing)
- Complements existing DLP/governance tools rather than replacing them
- Founders are respected security veterans
- Recognized in RSAC, Black Hat and RSA Launch Pad competitions
- Prompt-simulation approach models real user access profiles
- Independent and venture-backed
Cons
- Early-stage company and nascent product category
- Value is tied to which AI assistants you deploy
- No public pricing or free tier
- Cloud-only; no self-hosted option advertised
- Overlaps with native controls in some Microsoft tooling
- Small footprint compared with larger security suites
Pricing plans
Enterprise
Custom
- LLM oversharing detection
- Prompt simulation across access profiles
- Real-time response remediation
- Assistant integrations (Copilot, Glean)
- Continuous monitoring
Key features
API
Team collaboration
Integrations
Microsoft 365 Copilot, Glean, Microsoft Purview, SharePoint, Slack
Input types
text
Output types
text
Best For
preventing LLM oversharing, securing Copilot deployments, AI readiness assessments, need-to-know access enforcement
Compare key features
View all alternatives →Feature
Knostic
Lasso Security
HiddenLayer
Pricing
Paid
Paid
Paid
Free plan
No
No
No
Free trial
No
No
No
API
Yes
Yes
Yes
Self-hosted
No
No
Yes
Team support
Yes
Yes
Yes
Frequently asked questions
What problem does Knostic solve?+
It stops enterprise AI assistants like Microsoft 365 Copilot and Glean from oversharing sensitive information by enforcing need-to-know controls on the answers they generate.
Is Knostic a replacement for DLP or Microsoft Purview?+
No. It is positioned as a complement that catches inference-level oversharing that traditional access and DLP tooling can miss.
Is Knostic still independent?+
Yes. As of August 2026 Knostic remains an independent, venture-backed company with roughly $19M in disclosed funding.
Who founded Knostic?+
It was founded in 2023 by cybersecurity veterans Gadi Evron and Sounil Yu, and is based in Herndon, Virginia.
Does Knostic publish pricing?+
No. It uses an enterprise sales model, so you need to contact the vendor for a quote.
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