Attribute-Based (ABAC) vs. Persona-Based Access Controls (PBAC)
19 August 2025
Knostic is the first platform that enables safe, company-wide AI adoption through need-to-know-based access controls that prevent data exposure.
The risk of AI-enabled data leakage has slowed or stalled LLM deployments across enterprises. Security teams need certainty that GenAI won’t overshare sensitive insights with the wrong users.
Knostic simulates AI behavior, enforces policy at the knowledge level, and gives teams the visibility and confidence to deploy AI knowledge assistants safely at scale.
into where and how commercial AI Assistants like Microsoft Copilot, Glean, and Gemini for Workspaces overshare enterprise data.
for policy drift and new overshared content.
through optimized permissions and labeling.
All of this is backed by Knostic’s real-time enforcement capabilities, letting you stop oversharing before it starts.
Discover access control weaknesses by automatically testing whether enterprise AI assistants expose restricted documents from SharePoint, OneDrive, and Google Drive.
Enforce AI access based on user role, department, and business context, not static permissions alone.
Deploy fast with zero disruption. Connect to M365, Glean, and Copilot within hours, not months.
Get automated recommendations for Purview labels and M365 permissions, grounded in how AI tools actually behave.
Identify where DLP, RBAC, or Purview policies break down when faced with inference-based exposure.
Take immediate action on oversharing, prioritized by role, department, or sensitivity.
See not just what was accessed, but what was assembled and inferred by AI across siloed sources.
Ensure safe rollout of Copilot, Glean, and Gemini enterprise-wide with granular control over AI answers.
Learn moreCatch where knowledge discovery tools “connect the dots” too well, surfacing private or regulated info.
Learn moreSupport HIPAA, GDPR, and SEC compliance by tracking how knowledge is accessed, not just files.
Learn moreModel what LLMs can leak using only standard user access. Prove risk with realistic, AI-powered abuse paths.
Learn moreKnow what Copilot might reveal to contractors, assistants, or offshore teams, before it happens.
Learn moreQuantify risk at the AI layer. Prove governance maturity with clear dashboards and real-world simulations.
Learn moreKnostic provides proactive identification of specific exposure gaps before incidents occur.
Learn more
Discover latent oversharing in HR, finance, or legal data during due diligence or system integration.
Learn moreCheck whether the existing segmentation holds when LLMs are allowed to infer across domains.
Detect stale content still exposed by Copilot and automate cleanup actions.
Learn moreSimulate natural language reconnaissance. Show what even non-admin users could uncover with AI-enabled prompts.
Learn moreQuantify the exposure from a compromised account with Copilot, not just file access, but inferred insight.
Learn moreKnostic helps healthcare organizations prevent AI tools like Copilot from exposing PHI and ensures HIPAA-compliant knowledge access.
Pharma teams use Knostic to protect R&D data, clinical trials, and IP from unauthorized inference by enterprise AI tools.
Knostic enables financial institutions to enforce need-to-know policies and meet SEC, FINRA, and SOX compliance during AI adoption.
Energy companies rely on Knostic to secure operational knowledge and validate knowledge boundaries in AI-powered environments.
Enforce regulatory requirements at the AI layer and generate defensible audit trails.
Build securely with visibility into which training data or internal docs can be surfaced by AI.
Prevent Copilot from surfacing salaries, complaints, or sensitive HR records unintentionally.
Identify exposed data sets, improve access-hygiene, and understand how AI interprets unstructured knowledge.
Ensure client-related knowledge doesn’t leak across teams or via AI assistants.
Prove AI governance maturity and secure enterprise AI rollouts with confidence.
Align AI adoption with IT controls and reduce the risk of unintended exposure at scale.
Close the gap between user access and knowledge inference; reinforce true need-to-know enforcement.
Understand real AI risks and see governance maturity in measurable terms, not vague reports.
Run realistic, inference-based LLM recon and demonstrate control breakdowns.
Knostic transforms how enterprises govern AI tools by securing what legacy systems can’t: the knowledge layer. Whether you're deploying Copilot, defending against insider risk, or preparing for an audit, Knostic gives you:
Purview provides excellent data governance policies and classification - our tool validates that those policies are properly enforced when users interact with AI assistants. Think of it as continuous testing to ensure your Purview investments are working as intended in real-world AI scenarios.
Purview sets the rules - we help you verify they're being followed. Our tool provides ongoing validation that your Purview classifications and policies are effectively preventing inappropriate AI-powered document discovery.
This does not replace Purview. You should continue to use Purview for data discovery and sensitivity classification. The data discovery process using Purview (and other similar data discovery tools) can take months to complete for a full scan of a large enterprise’s entire file system.
Knostic takes a broad approach with prompts built on a corpus of sensitive business topics for specific user profiles. This approach can accelerate the discovery of sensitive business
content, uncovering 80% of the high priority findings in less than 20% of the time.
AI assistants can surface sensitive information through aggregation, inference, and semantic search that doesn't trigger DLP's pattern-based detection, even when the underlying access should be restricted.
Knostic fills this gap by testing whether AI-powered document discovery and response generation properly respect your existing access controls and data classifications, catching scenarios where AI finds creative ways to surface restricted information that DLP policies weren't designed to anticipate.
DLP protects against known sharing patterns. Knostic discovers unknown, AI-enabled, access patterns that emerge from conversational interactions with enterprise data.
Even without formal data discovery or classification, Knostic provides immediate value by identifying what sensitive information is currently exposed through AI assistants - essentially performing data discovery through the lens of actual user access patterns.
We also support Glean and will be adding more Enterprise AI tools soon.
You would need to be using Microsoft 365 and have a minimal number of Copilot licenses active for testing, but you do not not need to have active Copilot users. Even if you are not intending to use Copilot, this approach can still help accelerate the discovery of sensitive content within Microsoft 365 itself.
Personas can be determined in a number of ways. We recommend that you start with a user given birthright permissions in your organization - an "Everyone" user. Then you can copy select representative users within specific business areas into testing accounts, or create an aggregate persona based on the combined permissions of a team, department, or job function.
You do not not need to have any defined roles to get started. At times program owners feel like they are not ready because they don’t have a robust Identity and Access Management program or fall short in defining roles. As long as you have Department level delineation of users, that’s sufficient to define a profile. Knonstic can also help by beginning an assessment with a user profile that has no permissions at all.
Knostic doesn't sell customer data or share it with partners.
Specifically, Knostic collects document metadata, such as the file name, location, date of creation and last update, the document author, and document summary information that Knostic uses to perform analysis. Analysis provides summary document topics related to the prompt context and contextual recommendations regarding prioritization.
Knostic tests real access scenarios, providing actionable remediation targets down to the riskiest files, folders, and sites.
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