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A shield for tailored AI applications

Protect your internally developed applications and AI systems from prompt injections, information leaks and toxic LLM responses

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Contact offices

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London (UK)

Easthampstead Road

Wokingham

RG40 3AE  Berkshire

+44 (7887) 505 116

Prague (CZ)

Freyova 1/12

Areal Pivovar offices

190 00  Prague 

+420 (730) 561 700

Vienna (A)

 

Scheydgasse 41

A-1210  Vienna

+43 (660) 400 1409

Terms & Conditions

© 2026 Contigen Ltd. | All rights reserved 

A Layered Security Framework for Applications

AI threat protection shield

Get real-time, semantic defense against 13 core and advanced AI threats, including prompt injection, jailbreaking and data exfiltration.

1

Data leakage fortress

With over 950 pre-built rules, our enterprise-grade DLP prevents sensitive data like API keys, credentials and customer PII from being exposed through your application.

2

Multi-word pattern protection

Go beyond simple keywords. Our AI-powered engine detects and blocks malicious or unwanted multi-word phrases in real-time with near-zero false positives.

3

Effortless integration

Switch your API endpoint from "api.openai.com" to "app.nexfirewall.com". That's it. You get enterprise-grade security in less than 5 minutes.

4

More about Nex Firewall for AI-powered applications

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Protecting your AI solutions

While your custom AI applications deliver significant value, they are also high-value targets for sophisticated AI-specific attacks. Threats like prompt injection, data leakage and jailbreaking can disrupt your systems, compromise critical data, and damage your brand image.

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A resilient barrier securing your AI systems

A Nex Firewall protects your custom applications through an all-encompassing four-layer defense. Being fully OpenAI API compatible, it allows for effortless integration - by modifying just one line of code to point to our endpoint, your application gains instant protection with no need for SDK changes or intricate configuration.

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