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60 changes: 1 addition & 59 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -68,65 +68,7 @@ RetailShield closes that gap.

## Architecture

```
RETAILSHIELD
Retail-specific threat detection & automated response
built natively for Microsoft Sentinel

┌─────────────────────────────────────────────────────────────────┐
│ 1. RETAIL DATA SOURCES │
│ POS/Till · Identity (Azure AD) · Email/M365 · Network/Firewall │
│ Endpoints · Supply Chain & Suppliers │
└─────────────────────────────────────────────────────────────────┘
┌─────────────────────────────────────────────────────────────────┐
│ INGESTION → Microsoft Sentinel Log Analytics Workspace │
│ Standard tables + custom POS table (HMAC-SHA256 signed) │
└─────────────────────────────────────────────────────────────────┘
┌─────────────────────────────────────────────────────────────────┐
│ 2. DETECTION — 24 KQL rules mapped to MITRE ATT&CK │
│ │
│ Retail-specific (14): gift-card fraud · POS void/refund · │
│ credential stuffing · MFA fatigue · phishing · ransomware · │
│ supplier compromise · data exfil · AI voice fraud · POS │
│ anomaly · privileged role abuse · after-hours · impossible │
│ travel · TLS downgrade (PCI) │
│ │
│ Loss Prevention (4): void/refund abuse · gift card fraud · │
│ sweethearting · after-hours POS transaction │
│ │
│ Generic SOC (6): brute force · bulk file access · C2 beacon · │
│ DNS exfil · RDP lateral movement · suspicious PowerShell │
└─────────────────────────────────────────────────────────────────┘
Sentinel correlates alerts → INCIDENT (IP · account · host)
┌─────────────────────────────────────────────────────────────────┐
│ 3. AUTOMATED RESPONSE & MITIGATION — 8 Logic App playbooks │
│ │
│ ┌────────────────┐ ┌────────────────┐ ┌──────────────────┐ │
│ │ STEP 1 │──▶ STEP 2 │──▶ STEP 3 │ │
│ │ Triage & │ │ Contain / │ │ UK Compliance │ │
│ │ Enrich │ │ Mitigate │ │ Assistant │ │
│ │ │ │ │ │ │ │
│ │ classify + │ │ block IP · │ │ NCSC 24h + │ │
│ │ severity · │ │ disable acct · │ │ ICO 72h tracking│ │
│ │ threat-intel │ │ isolate host │ │ · drafts report │ │
│ │ (VT/AbuseIPDB) │ │ (Defender) │ │ (assists human) │ │
│ └────────────────┘ └────────────────┘ └──────────────────┘ │
└─────────────────────────────────────────────────────────────────┘

MODULES: [Threat Detection: LIVE] [Compliance Centre: LIVE] [Vulnerability Scanner: LIVE]
[Loss Prevention: LIVE] [ChainShield: PLANNED]

Validated in a controlled lab · published methodology (DOI 10.5281/zenodo.20608262) · avg ~22 min MTTD
A Sentinel-native content pack — not a standalone SIEM.
```
![RetailShield system flow](docs/images/retailshield_flow.svg)

---

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