SHA-256 TAMPER-EVIDENT HASH CHAIN
Every entry cryptographically links to its predecessor. Altering any record breaks the entire chain.
ZERO-TRUST DEFENSE PIPELINE
Five hardened layers enforce continuous verification for every AI gateway request.
NIST SP 800-207
OWASP LLM TOP 10
ZERO-TRUST ARCHITECTURE
DEFENSE LAYERS — REQUEST FLOW
L1
LAYER 1 — CRYPTOGRAPHIC AUTHENTICATION
Cryptographic Ingress Verification
HMAC-SHA256
Timing-safe compare
Nonce replay prevention
300s window
L2
LAYER 2 — ADAPTIVE RATE LIMITER
Token Bucket Rate Limiter
Token bucket
standard 30tok/1s
premium 150tok/10s
internal 1000tok/100s
L3
LAYER 3 — AI THREAT FIREWALL
AI Context Poisoning & Prompt Injection Firewall
9 OWASP LLM rules
Shannon entropy > 4.8 bits/char
Risk scoring engine
L4
LAYER 4 — EXECUTION SANDBOX
Agent Tool Execution Sandbox
RBAC least-privilege
Shell injection blocker
Path traversal prevention
L5
LAYER 5 — AUDIT LEDGER
Tamper-Evident SHA-256 Hash Chain
SHA-256 hash chain
Tamper detection
p50/p95/p99 telemetry
LIVE GATEWAY METRICS
AUTO-REFRESH 5s
UPTIME
--
seconds
LEDGER INTEGRITY
--
TOTAL REQUESTS
--
processed
BLOCK RATE
--%
of all requests
OWASP LLM TOP 10 — COVERAGE MATRIX
| ID |
THREAT NAME |
HANDLING LAYER |
STATUS |
| LLM01 |
Prompt Injection |
Layer 3 — AI Threat Firewall |
COVERED |
| LLM02 |
Sensitive Information Disclosure |
Layer 3 — Credential Leak Detection |
COVERED |
| LLM03 |
Supply Chain Vulnerabilities |
Layer 1 — Cryptographic Auth |
PARTIAL |
| LLM04 |
Data and Model Poisoning |
Layer 3 — Token Flood / DoS Detection |
COVERED |
| LLM05 |
Improper Output Handling |
Layer 4 — Execution Sandbox |
COVERED |
| LLM06 |
Excessive Agency / Exfiltration |
Layer 3 — Markdown Exfil Detection |
COVERED |
| LLM07 |
System Prompt Leakage |
Layer 3 — Prompt Extraction Rule |
COVERED |
| LLM08 |
Vector and Embedding Weaknesses |
Out of scope — embedding layer |
OUT-OF-SCOPE |
| LLM09 |
Misinformation |
Out of scope — output validation |
OUT-OF-SCOPE |
| LLM10 |
Unbounded Consumption |
Layer 2 — Adaptive Rate Limiter |
COVERED |