Stop Employees Sharing Sensitive Data with ChatGPT
Most employees sharing sensitive data with AI tools are not doing it deliberately. They are trying to work more efficiently. The problem is that the prompt box looks like any other text field — and there is nothing stopping them from pasting in whatever they need to provide context.
Ventrin is a Chrome extension that scans and sanitises employee prompts locally in the browser before they are sent to ChatGPT, Claude, Gemini or Copilot. When sensitive content is detected, Ventrin warns the employee, rewrites the prompt automatically, or blocks the send — depending on your team's policy. Sensitive data never leaves the device unintentionally. Admins see every risk event in a central dashboard.
Why employees share sensitive data with AI tools
AI tools are genuinely useful for day-to-day work tasks: summarising documents, drafting emails, analysing data, writing reports. The faster route to a good result is to give the tool as much context as possible — which means employees often paste in real content.
Without controls, every department is exposed. Legal pastes client correspondence. Finance pastes revenue reports. HR pastes employee records. Sales pastes deal notes with prospect details. The data leaves the organisation, is processed by a third-party model and becomes part of that provider's service logs — often with no visibility for the business.
Client names, matter references, case strategy, correspondence and confidential instructions.
Prospect contact details, pipeline values, deal notes and negotiation strategy.
Employee issues, grievances, performance reviews, candidate data and salary details.
Revenue figures, margin data, forecasts, invoices and supplier account details.
Proprietary code, API credentials, architecture diagrams and internal system endpoints.
Internal processes, supplier relationships, pricing agreements and logistics data.
How Ventrin intercepts risky prompts in real time
Ventrin runs as a Chrome extension on each employee's device. It watches what is typed or pasted into AI tool prompt boxes. Before a prompt is sent, Ventrin checks it against the policies your team has defined.
If a risk is detected, Ventrin can display a warning so the employee understands what was found, rewrite the prompt with sensitive details removed while keeping the intent intact, or block the send entirely for high-risk content like credentials.
Admins see a log of every flagged event: which AI tool, what risk type, what action was taken and when. No raw prompt content is stored on Ventrin's servers.
Key Ventrin features for this use case
Runs locally on device. Catches risky prompts before they reach ChatGPT, Claude or Gemini.
Define what to allow, warn about, sanitise or block — per team, role or tool.
Three response modes depending on risk level. Warns on mild risks. Rewrites on moderate. Blocks credentials entirely.
Dashboard shows flagged events across the whole team. Filter by user, tool or risk type.
Exportable log of every AI-related risk event. Useful for compliance review and incident investigation.
Ventrin does not interrupt normal work. Employees only see an alert when a risk is actually detected.
AI risk by department
Click any card to see how Ventrin protects each team's AI use.
- Client names and matter references
- Case strategy and legal advice
- Confidential correspondence
- Litigation positions
Client identifier detection and matter reference blocking. Prompts are rewritten with generalised legal context.
- Prospect names and contact data
- Deal values and pipeline figures
- Negotiation notes
- Competitive intelligence
Personal data detection removes contact details. Financial figures are generalised. Named companies are flagged.
- Employee names and personal data
- Grievance and disciplinary records
- Salary and benefits data
- Candidate assessment notes
High-sensitivity HR prompts are blocked. Named individuals in employee records cannot be sent to external AI tools.
- Revenue and margin figures
- Forecast data
- Supplier invoices and account numbers
- Internal budget breakdowns
Financial figures are detected and generalised. Account references and named suppliers are removed from prompts.
- API keys and access tokens
- Internal system endpoints
- Proprietary code logic
- Architecture and infrastructure details
Credentials are blocked entirely. Internal hostnames and key strings are caught before they reach AI tools.
- Supplier pricing and terms
- Internal process documentation
- Logistics and delivery data
- Contractual obligations
Internal reference detection flags supplier names, pricing terms and process documents. Admins are notified.
Built for teams that cannot afford a data incident
Local-first detection
The scanning model runs in your browser, not on our servers. Sensitive content never leaves the device for analysis.
No data egress
Ventrin does not receive, store or process your team's prompt content. Only risk event metadata is logged.
Configurable policy controls
Warn, sanitise or block based on content type and team role. Full control over how the extension behaves.
Admin event logs
Every flagged event is recorded with risk type, action and timestamp. Provides the audit trail your compliance process needs.
Protect your team's AI use from the browser
Ventrin deploys as a Chrome extension. No proxy, no network change, no IT project. Most teams are protected on the same day.
Frequently asked questions
Ventrin protects company-managed browsers. For BYOD environments, the Chrome extension can be installed individually. Combining Ventrin with a clear AI use policy gives employees guidance about which devices should be used for work-related AI tasks.
Training is a useful first step but it does not prevent accidental exposure. Employees under time pressure often make fast decisions. Ventrin catches risks at the point of action, not in a training room weeks earlier. It reinforces good behaviour rather than replacing training.
Yes. Ventrin's policy engine lets you configure different levels of protection by team or role. Legal and HR teams, for example, can have stricter blocking rules, while marketing and content teams may only need warnings for PII.
No. The scanning runs locally and adds no perceptible delay to normal use. Employees will not notice Ventrin operating in the background unless it detects a risk.
The employee sees their original prompt rewritten with risky details removed or generalised. They can review the safe version before sending. They understand what was changed and why. The original version is never sent to the AI tool.
Not currently, but the event is logged. If an employee believes a block was incorrect, they can contact their admin who can review the event and adjust the team policy if needed.
Let your team use AI without leaking sensitive data.
Join legal and professional teams already using Ventrin to protect their AI use. Browser-based, locally detected, fast to deploy.