Applying Y Combinator S26
TOO SOON

Your AI is running.
Is anyone watching?

ShieldCore intercepts every request your team sends to AI models. Real-time DLP, injection detection, and immutable audit trails — in under 2ms.

<2ms overhead per request 99.99% uptime SLA 9 security scanners OpenAI · Anthropic · Gemini
import OpenAI from 'openai';

const openai = new OpenAI({ apiKey: 'sc-usr-8f3kLmN2x', baseURL: 'https://proxy.shieldcore.net/v1' });
SOON: OUR NATIVE SDK FOR TECHNOLOGIES ALL SCANNERS ACTIVE

Every day, employees send sensitive data to AI. Nobody is watching.

These are real incidents. Without a security layer, yours is next.

Samsung Electronics · 2023

Engineers pasted proprietary source code into ChatGPT to debug it. Three separate leaks in 20 days.

$100M+ estimated loss
Ferrari · 2025

CEO nearly defrauded for €1M via a deepfake voice call. AI-powered impersonation at the executive level.

€1,000,000 near loss
Fortune 500 · 2025

AI coding agent manipulated via prompt injection in a README. Production API credentials exfiltrated.

Production breach
Legal Firm · 2024

Lawyers summarized client contracts in Claude. Client confidentiality violated across multiple matters.

Client relationships terminated
Fintech Startup · 2025

AI coding agent read .env files with production database credentials during an autonomous task.

6-hour database exposure
Healthcare Company · 2024

Support staff summarized patient tickets in ChatGPT. PHI sent to third-party servers. HIPAA violation.

$2.3M regulatory fine

The EU AI Act, HIPAA, SOC 2, and GDPR now require audit trails and data governance for AI systems. The window to comply without incident is closing.

Start securing your AI →

The Security Pipeline

Every prompt passes through 9 hardened stages. Optimized for maximum performance with minimal latency.

Note: These functions represent our current MVP core. We are scaling our features rapidly based on enterprise demand, implementing even more scanners and integrations every week.

01
Verified

Tenant Resolution

Identifies the company and employee from their personal proxy key. Zero-trust from the first byte.

02
Real-time

Rate Limiting

Sliding window rate limiter enforces per-user and per-organization quotas.

03
Universal

Request Parsing

Extracts prompt text from OpenAI, Anthropic, and Gemini formats — automatically, with no config needed.

04
Concurrent

Parallel Scanners

PII detection, secrets scanning, prompt injection (regex + ML), and indirect injection — all concurrent.

05
Instant

Policy Evaluation

Loads company-specific rules from cache. Decides: Allow, Block, Mask, or Warn. Hot-reloadable YAML.

06
Secure

Request Transformation

Replaces sensitive values with typed placeholders. JSON structure preserved. The LLM never sees raw PII.

07
Upstream

Upstream Forwarding

Forwards the sanitized request to the real LLM using the company key — employees never see the real key.

08
Hardened

Response Processing

Scans the AI response for jailbreak completions, harmful content, and data exfiltration attempts.

09
Async

Audit Event Emission

Asynchronously logs every event with SHA-256 hash chaining. Immutable, compliant, always-on.

Minimal
Pipeline Latency

Stages 1–6 and 8–9 run in your infrastructure. Stage 7 hits the LLM. Your users notice nothing. Your security team sees everything.

The AI Security Stack.
Modular. High-performance.

Nine specialized modules — deploy all or pick the ones your threat model demands.

See everything your AI does.
Control all of it.

Built for companies that use AI and have something to protect. Real-time threat feed, per-user analytics, and policy management — in one place.

app.shieldcore.net/dashboard
ShieldCore

Overview

Acme Corp · Production

LIVE
Active Proxies
24
Requests / min
1,402
Threats Blocked
84
Tokens Today
2.1M
Recent Interceptions Last 10 minutes
ID Threat Type Severity
TH-2841 PII Detected — SSN Critical
TH-2840 Prompt Injection Critical
TH-2839 Rate Limit Warning High
TH-2838 Secret Key Detected Critical
TH-2837 Unusual Model Usage Medium

Simple pricing. No surprises.

Every plan includes the proxy, DLP, injection detection, and audit trail. No per-seat fees on top.

Starter

$500

/month · up to 25 users

  • Reverse proxy (all AI providers)
  • DLP — PII and secrets detection
  • Prompt injection detection
  • Audit trail (90 days)
  • Live activity dashboard
  • Token cost tracking
  • Email alerts
  • 500K tokens monitored / month
Get started
Most popular

Team

$2,000

/month · up to 100 users

  • Everything in Starter
  • Agent File Monitor (eBPF daemon)
  • Policy engine with RBAC
  • Audit trail (1 year)
  • SOC 2, GDPR, EU AI Act reports
  • Slack + Teams alerts
  • SSO (Google + Microsoft)
  • Unlimited tokens monitored
Get started

Enterprise

Custom

Unlimited users

  • Everything in Team
  • Automated red teaming (OWASP LLM Top 10)
  • Self-hosted deployment option
  • Audit trail up to 7 years
  • HIPAA, ISO 42001 compliance reports
  • SIEM integration (Splunk, Elastic)
  • SAML 2.0 SSO
  • 99.99% SLA + dedicated support
Contact sales
$0.0001 per token scanned

Pay-as-you-go — all core features, no monthly commitment. Converts to a subscription when your volume stabilizes. Ideal for pilots and testing.

Start for free

How ShieldCore compares

The two leading AI security companies were acquired by Check Point and Palo Alto Networks in 2025. ShieldCore is the independent, complete alternative — with no enterprise lock-in.

Scroll to see full comparison

Product ProxyDLPAnti-InjectFS MonitorCost ControlAudit TrailSelf-Host
ShieldCore
Lakera (Check Point)
Acquired 2025
API ~
Prompt Security (Palo Alto)
Acquired 2025
~ ~
Silmaril (YC SP26)
Limited scope
~
Full support ~ Partial / limited Not available
Y Combinator Summer 2026

The AI security standard every company needs. Built independent.

The problem is real. The regulation is incoming. The leading competitors were absorbed into $50B+ platforms — leaving the mid-market without a complete, independent solution. ShieldCore fills that gap.

Get early access →

Latest Insights.
Security, engineering, and AI.

Your AI runs.
We keep it secure.

Five-minute integration. Works with your existing AI stack. No changes to your employees' workflow.

No credit card required 5-minute setup Works with existing AI providers SOC 2 compliant infrastructure