We built Shield because authentication was never the hard part

Most security tools are obsessed with the front door.

Who is this person? Do they have the right credentials? Is this device trusted? Those are real questions, and the industry has spent twenty years building increasingly sophisticated answers to them.

But while everyone focused on the front door, attackers started using the windows.

A compromised session. A poisoned form. A bot that doesn't look like a bot. A prompt that rewrites the AI's instructions. A tool call that should never have been permitted.

None of those break authentication. They happen after authentication. They exploit the assumption that once a request is let in, it can be trusted to do whatever it claims to want to do.

What existing tools miss

• A WAF sees traffic volume and known payload patterns. It doesn't understand the intent of a form submission or the risk of a file upload.
• CAPTCHA distinguishes humans from bots at the door. It has no view into what happens inside the session.
• An LLM with no protection in front of it is an open channel to your business logic. Prompt injection, data extraction and system-prompt leakage don't require authentication to exploit.
• An AI agent with MCP tool access can write, delete, send, schedule. Nobody was evaluating whether each call should actually happen.

The layer nobody was covering

Shield was created to sit between the front door and the sensitive systems behind it. Not to replace the WAF. Not to replace CAPTCHA. To operate deeper — where requests have already been let in and are about to do something.

It is an active decision layer. Every request gets a verdict: allow, monitor, challenge, or block. Every verdict is signed and recorded. Nothing passes through without being evaluated.

Built from what we run in production

Anonymization, identity, MCP — for us these aren't slides in a deck. They're problems we solve every day building Corpilus. Shield is the layer we needed, turned into a product.

Shield is preparing for launch. Pre-register for early access.

We also teach how this works, live, with our expert partner Avenue78 — from AI security to the Identity Living System.