Deltawalla Dutch company
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AI data security

Secure AI. On your terms.

Deltawall stops sensitive data before it reaches AI, from people in the browser to apps and AI agents. Your people keep using ChatGPT, Copilot and every other AI tool.

Book a demoHow it works

Detect

Sensitive data is spotted as people type, paste or upload.

The Activity page of the Deltawall console: the last 30 days, with 79 blocked and 56 redacted, and a bar chart per day.

Protect

Your policy decides: allow, warn, mask or block. The user always sees why.

The Policies page of the Deltawall console: the rules in the order they run. Two rules block, for example API keys and credentials, and one redacts bank account numbers.

Prove

Every decision is on record. Your auditor can verify it without trusting us.

The Evidence page of the Deltawall console: a log of events, each with its number, its time, its outcome (blocked, redacted, recorded, allowed or warned) and a label for what was sent, such as a prompt with an AWS key.

Your people already use AI. Your data goes with it.

Sensitive data gets pasted into AI tools every day to get work done. It happens inside the browser, where your firewall and DLP can't see it.

77%

of employees who use AI tools paste data into them

Of those, 22% share personal or payment data.

Incidents in the news

A security layer between your people and AI.

Deltawall does not stop people using AI. It stops sensitive data leaving with them.

The Insights page of the Deltawall console: in the last 30 days, sensitive data met an AI tool 160 times, and 8 of 11 people are covered.

Works in ChatGPT, Microsoft Copilot, Claude, Gemini, Perplexity and DeepSeek, with 221 AI tools to approve, tolerate or block.

How it works

Who it's for

For organisations trusted with other people's data.

Made for European organisations that handle personal and financial data, from scale-ups to regulated enterprises.

  • Financial services. Account numbers, card data and client files stay out of AI tools.

  • Government and education. Citizen data such as BSN numbers, student records and research data stay under your control.

  • Professional services. Client files and contracts stay confidential.

  • Foundations and scale-ups. Payroll, donor and customer files stay out of AI tools.

The Employees page of the Deltawall console, Departments tab: departments such as Accounting and HR, each with its number of people.
  • The CISO gets control.
  • The DPO gets proof.
  • The works council gets dashboards by department, with no individual scores.

Security built for enterprise compliance.

  • GDPR
  • NIS2
  • DORA
  • EU AI Act

Designed around the rules and frameworks your auditors ask about. Deltawall holds no certification today.

How we approach compliance

About

Born from research at VU Amsterdam.

Deltawall began in September 2025 as a research project.

About Deltawall

For IT providers

Your clients are already asking you what to do about AI.

Offer your clients safe AI use. Deltawall rolls out through the device management you already run for them.

Become a partnerSee what partners get

Say yes to AI. Keep the data in. Prove it to the regulator.

Thirty minutes, live, no slides. A prompt masked, a file redacted, the evidence verified in front of you.

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