# Advanced Security Features

## Overview

NIP provides enterprise-grade security features with real-time integrity monitoring, comprehensive verification, and forensic analysis capabilities.

## Features

### Real-Time Integrity Monitoring
- **Visual Status Indicators**: ✅ VERIFIED, ⚠️ USER-MODIFIED, 🔴 TAMPERED, ❓ UNKNOWN
- **Three-State Integrity Model**: Comprehensive security status tracking
- **Real-Time Detection**: Immediate tamper detection and alerts
- **Integration**: Security status shown in all CLI commands

### Verification Commands
```bash
# Verify package integrity
nip verify firefox

# Forensic diagnosis
nip diagnose vim

# Security status in system overview
nip status
```

### Security-Enhanced Listings
All package listings now include security status:
```bash
nip list
# Shows packages with security indicators:
# ✅ firefox 118.0 (stable) - VERIFIED
# ⚠️ vim 9.0.2 (stable) - USER-MODIFIED
```

### Forensic Analysis
- **Comprehensive Investigation**: File-level tamper analysis
- **Evidence Collection**: Structured forensic data
- **Timeline Analysis**: Security event correlation
- **Reporting**: Professional forensic reports

## Implementation Status

### ✅ Complete
- Real-time integrity monitoring integration
- Visual security status indicators
- Verification and diagnosis commands
- Security-aware CLI interface
- Forensic investigation capabilities

### 🔧 Available
- Multi-algorithm hash verification (BLAKE2b, BLAKE3, SHA256)
- Cryptographic signature verification
- Trust and attestation system
- Security event logging and SIEM integration

## Security Architecture

The security system is built on:
- **Content Addressable Storage (CAS)**: Cryptographic package identification
- **BLAKE3 Hashing**: High-performance integrity verification
- **Three-State Model**: Clear security status classification
- **Real-Time Monitoring**: Continuous integrity checking
- **Forensic Capabilities**: Professional investigation tools

## Enterprise Ready

NIP's security features are designed for:
- High-security environments
- Mission-critical systems
- Compliance requirements
- Forensic investigation needs
- Enterprise security policies