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Stop Malicious Prompts at the Source

Prevent malicious prompts from hijacking your AI. Knostic stops leaks, fraud, and loss of reputation in real time.

The-Prompt-Injection-Firewall
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Detect Prompt Injection Before It Reaches the Model

Knostic analyzes every prompt as it’s submitted, spotting manipulation attempts, like hidden instructions or jailbreaks, before they can cause harm

Block or Sanitize Malicious Prompts

Suspicious inputs are automatically blocked or cleaned, preventing data exfiltration and unauthorized actions without disrupting valid queries

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Guard Against More Than Just Prompt Injection

Knostic protects against jailbreaks, denial-of-wallet exploits, and hidden instructions, ensuring your AI applications stay secure and compliant

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Key Capabilities

Real-Time Prompt Inspection

Analyze and filter prompts before they reach the model

Automatic Input Sanitization

Block or clean malicious prompts in real time

Defense Against LLM Exploits

Protect against jailbreaks, hidden instructions, and denial-of-wallet attacks

Customizable Policies

Tune sensitivity and enforcement for each application or model

Comprehensive Audit Logs

Maintain detailed records for incident response and compliance

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Frequently Asked Questions

A crafted prompt designed to override system instructions, exfiltrate sensitive data, or trigger harmful actions.

Because they rely on static filters or network firewalls, which cannot parse evolving natural-language manipulations or jailbreak attempts.

By inspecting prompts and responses in real time, detecting manipulation attempts, and applying adaptive policies tuned to each application.

No. Policies can be tuned to balance filtering sensitivity with usability, minimizing false positives.

Absolutely. Security teams can tune detection sensitivity and choose to block, log, or sanitize suspicious prompts based on context.

Knostic supports standalone LLM deployments, multi-agent frameworks, and API/gateway integrations.

Latest research and news

research findings

MCP Hijacking of Cursor’s New Browser

 
We walk through how Cursor’s new browser could be compromised via JavaScript injection. Unlike VS Code, Cursor does not perform integrity checks on Cursor-specific features. That ...
AI Governance

AI Supply Chain Risks: MCP, Extensions, Prompts & Coding ...

 
What security leaders need to know from our recent webinar with Knostic CTO Sounil Yu The inflection point: Open source meets machine‑speed vuln discovery The XKCD “tiny module in ...

What’s next?

Want to protect your AI applications from prompt injection and LLM-specific attacks?
Let's talk.

Knostic keeps your AI applications secure and compliant by inspecting prompts and responses in real time, blocking malicious inputs, and defending against jailbreaks and hidden instructions.