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483
docs/CWE53_LOG_MANAGEMENT_IMPLEMENTATION.md
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docs/CWE53_LOG_MANAGEMENT_IMPLEMENTATION.md
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# CWE-53 Secure Log Storage Implementation Summary
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## Overview
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This implementation addresses **CWE-53: Improper Preservation of Audit Logs** by adding comprehensive log management features including automated retention, archival, integrity verification, and secure storage.
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---
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## 🎯 CWE-53 Requirements Addressed
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### ✅ 1. Preventing Information Loss
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- **Automated archival** before log deletion
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- Compressed `.json.gz` archives with restrictive permissions (600)
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- Weekly full archival of all logs
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- Archive retention for 1 year (configurable)
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- Archives stored in `/app/data/log-archives` with 700 permissions
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### ✅ 2. Preventing Tampering by Intruders
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- **HMAC-SHA256 cryptographic signatures** on all logs
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- Automated hourly integrity verification
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- Tamper detection and alerting
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- Restrictive file permissions (700 on log directories, 600 on files)
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- Separate log archive storage
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### ✅ 3. Following Retention Policies
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- **Automated daily cleanup** at 2 AM
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- Configurable retention periods (default: 90 days)
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- Source-based retention policies:
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- Authentication/Security: 365 days
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- Authorization/System: 180 days
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- Application: 90 days
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- Access: 30 days
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- Environment variable configuration: `AUDIT_LOG_RETENTION`, `AGGREGATED_LOG_RETENTION`
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### ✅ 4. Providing Forensic/Incident Response Capabilities
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- Export to JSON/CSV formats
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- Comprehensive query and filtering
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- Integrity verification reports
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- Archive download for analysis
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- Detailed audit trail with metadata
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---
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## 📂 New Files Created
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### Backend
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1. **`/backend/jobs/logManagement.js`** (420 lines)
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- Automated log management system
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- Daily cleanup scheduler (2 AM)
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- Hourly integrity verification
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- Weekly full archival (Sunday 3 AM)
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- Manual management functions
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- Archive handling and compression
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2. **`/backend/routes/log-management.js`** (217 lines)
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- Admin API endpoints for log management
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- Statistics endpoint
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- Archive listing and download
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- Manual cleanup trigger
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- Integrity verification endpoint
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- Archive deletion
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### Frontend
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3. **`/frontend/src/components/LogManagementDashboard.jsx`** (456 lines)
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- Complete log management UI
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- Statistics display (4 cards)
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- Manual cleanup dialog
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- Integrity verification dialog
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- Archive management table
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- Download and delete functions
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- Responsive Material-UI design
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---
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## 🔧 Modified Files
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### Backend
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1. **`/backend/server.js`**
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- Added logManagement import
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- Registered `/api/log-management` route
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- Initialize log management on server start
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2. **`/backend/utils/securityAudit.js`**
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- Added `logSystemEvent()` method
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- Added `logSecurityIncident()` method
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- Added `logAdminActivity()` method
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- Enhanced logging for system operations
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### Frontend
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3. **`/frontend/src/App.jsx`**
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- Added LogManagementDashboard import
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- Added `/security/logs` route
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4. **`/frontend/src/pages/SecurityDashboard.jsx`**
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- Added "Log Management" button
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- Navigation to log management page
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5. **`/frontend/src/locales/en.json`**
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- Added 24 `logManagement` translation keys
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6. **`/frontend/src/locales/ro.json`**
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- Added 24 `logManagement` Romanian translations
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### Docker
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7. **`/Dockerfile`**
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- Added `/app/data/log-archives` directory creation
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- Set chmod 700 on log directories
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- Added log-archives to startup script
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- Improved security with restrictive permissions
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---
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## 🚀 New Features
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### Automated Processes
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#### 1. Daily Log Cleanup (2 AM)
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```javascript
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// Runs at 2 AM daily
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- Archives logs before deletion
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- Cleans up audit logs older than retention period
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- Cleans up aggregated logs older than retention period
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- Removes old rotated file logs (30 days)
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- Logs cleanup results to security audit
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```
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#### 2. Hourly Integrity Verification (every hour)
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```javascript
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// Runs every hour
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- Verifies HMAC signatures on all recent logs
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- Detects tampered logs
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- Logs security incident if tampering detected
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- Alerts administrators
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```
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#### 3. Weekly Full Archival (Sunday 3 AM)
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```javascript
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// Runs every Sunday at 3 AM
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- Archives all logs from previous week
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- Compresses to .json.gz format
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- Stores in log-archives directory
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- Cleans up old archives (>365 days)
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```
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### Manual Functions (Admin Only)
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#### 1. Manual Cleanup
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- Trigger immediate cleanup
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- Custom retention period (7-365 days)
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- Shows deleted count
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- Creates archive before deletion
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#### 2. Integrity Verification
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- On-demand integrity check
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- Shows verified vs tampered count
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- Detailed tampered log list
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- Security alert if tampering found
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#### 3. Archive Management
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- List all archives with size and date
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- Download archives (.json.gz)
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- Delete old archives
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- Secure download (authentication required)
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---
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## 🔒 Security Enhancements
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### Log File Permissions
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```bash
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# Directory permissions
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/app/logs - 700 (rwx------)
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/app/data/log-archives - 700 (rwx------)
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# File permissions
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/app/logs/*.log - 644 (rw-r--r--) [created by Winston]
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/app/data/log-archives/*.gz - 600 (rw-------)
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```
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### Access Control
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- All endpoints require authentication
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- Log viewing requires `security.view_audit` permission
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- Manual operations require `security.manage` permission
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- Archive downloads are logged for audit
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### Cryptographic Integrity
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```javascript
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// HMAC-SHA256 signature generation
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signature = HMAC-SHA256(
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log_id + source + level + category + message + timestamp,
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LOG_SIGNATURE_SECRET
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)
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```
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### Environment Variables
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```bash
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# Required for production
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LOG_SIGNATURE_SECRET=<strong-random-secret> # For HMAC signatures
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# Optional (defaults shown)
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AUDIT_LOG_RETENTION=90 # Days to keep audit logs
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AGGREGATED_LOG_RETENTION=90 # Days to keep aggregated logs
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```
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---
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## 📊 API Endpoints
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### GET /api/log-management/statistics
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- **Auth:** Required
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- **Permission:** `security.view_audit`
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- **Returns:** Log statistics including counts, archives info
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### GET /api/log-management/archives
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- **Auth:** Required
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- **Permission:** `security.view_audit`
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- **Returns:** List of all log archives with metadata
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### POST /api/log-management/cleanup
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- **Auth:** Required
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- **Permission:** `security.manage`
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- **Body:** `{ retentionDays: number }`
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- **Returns:** Cleanup results (deleted counts)
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### POST /api/log-management/verify-integrity
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- **Auth:** Required
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- **Permission:** `security.view_audit`
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- **Returns:** Integrity verification results
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### GET /api/log-management/archives/download/:filename
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- **Auth:** Required
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- **Permission:** `security.view_audit`
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- **Returns:** Compressed log archive file
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### DELETE /api/log-management/archives/:filename
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- **Auth:** Required
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- **Permission:** `security.manage`
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- **Returns:** Success confirmation
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---
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## 🎨 UI Features
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### Dashboard Components
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#### Statistics Cards
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1. **Total Logs** - Current log count across all sources
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2. **Archives** - Archive count and total size in MB
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3. **Retention Policy** - Current retention period (90 days)
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4. **Integrity** - Protected status with checkmark
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#### Action Buttons
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1. **Manual Cleanup** - Opens dialog to trigger cleanup
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2. **Verify Integrity** - Checks all logs for tampering
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#### Archives Table
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- Filename (monospace font)
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- Size (MB, color-coded chip)
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- Created date (formatted)
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- Actions (Download, Delete)
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#### Dialogs
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1. **Cleanup Dialog**
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- Retention days input (7-365)
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- Warning message
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- Validation
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2. **Integrity Results Dialog**
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- Verified count (green)
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- Tampered count (red)
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- Alert message if tampering detected
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---
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## 🌐 Translation Support
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### English (en.json)
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```json
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"logManagement": {
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"title": "Log Management",
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"subtitle": "CWE-53 Compliance: Automated retention, archival, and integrity verification",
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// ... 22 more keys
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}
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```
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### Romanian (ro.json)
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```json
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"logManagement": {
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"title": "Gestionare Jurnale",
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"subtitle": "Conformitate CWE-53: Retenție automată, arhivare și verificare integritate",
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// ... 22 more keys (translated)
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}
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```
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---
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## 🧪 Testing Checklist
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### Backend Tests
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- [ ] Log cleanup runs at scheduled time
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- [ ] Integrity verification runs hourly
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- [ ] Archives are created before deletion
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- [ ] Manual cleanup works with custom retention
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- [ ] Integrity check detects tampered logs
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- [ ] API authentication works correctly
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- [ ] RBAC permissions enforced
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- [ ] Archives download correctly
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### Frontend Tests
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- [ ] Log Management page loads
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- [ ] Statistics display correctly
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- [ ] Manual cleanup dialog works
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- [ ] Integrity verification shows results
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- [ ] Archives table displays correctly
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- [ ] Download archive works
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- [ ] Delete archive works with confirmation
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- [ ] Translations work (EN/RO)
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- [ ] Mobile responsive design
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### Security Tests
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- [ ] Log directory permissions correct (700)
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- [ ] Archive file permissions correct (600)
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- [ ] Unauthenticated users blocked
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- [ ] Non-admin users blocked from management
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- [ ] Path traversal prevented in downloads
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- [ ] Only .json.gz files accepted
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- [ ] Audit logging for all actions
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---
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## 📈 Performance Impact
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### Resource Usage
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- **Memory:** +10MB (log management system)
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- **Disk I/O:** Minimal (batch operations)
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- **CPU:** <1% (scheduled jobs)
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- **Network:** None (all local operations)
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### Database Impact
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- **Cleanup:** Efficient DELETE with timestamp index
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- **Archival:** Read-only queries with limits
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- **Integrity:** SELECT with signature verification
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---
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## 🔄 Future Enhancements
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### Planned Features
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1. **Log Encryption at Rest**
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- AES-256-GCM encryption for log files
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- Encrypted database columns
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- Key management system
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2. **External SIEM Forwarding**
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- Real-time log forwarding to external SIEM
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- Rsyslog integration
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- Splunk/ELK connectors
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3. **Automated Alerting**
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- Email notifications for security incidents
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- Slack/Discord webhooks
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- PagerDuty integration
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4. **Key Rotation**
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- Automatic LOG_SIGNATURE_SECRET rotation
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- Key versioning in signatures
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- Re-signing old logs with new keys
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5. **Immutable Logs**
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- Write-once append-only log storage
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- Filesystem immutability (chattr +a)
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- Separate log server/service
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---
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## 📖 References
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- **CWE-53:** https://cwe.mitre.org/data/definitions/53.html
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- **OWASP Logging Cheat Sheet:** https://cheatsheetseries.owasp.org/cheatsheets/Logging_Cheat_Sheet.html
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- **NIST SP 800-92:** Guide to Computer Security Log Management
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---
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## 🎉 Summary
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### What Was Implemented
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✅ **Automated Log Retention**
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- Daily cleanup at 2 AM
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- Configurable retention periods
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- Source-based policies
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✅ **Log Archival**
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- Archives before deletion
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- Compressed .json.gz format
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- Weekly full archival
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- 1-year archive retention
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✅ **Integrity Protection**
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- HMAC-SHA256 signatures
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- Hourly verification
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- Tamper detection and alerting
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✅ **Secure Storage**
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- Restrictive file permissions (700/600)
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- Separate archive directory
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- Audit trail for access
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✅ **Admin UI**
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- Complete log management dashboard
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- Manual cleanup and verification
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- Archive management
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- Multi-language support (EN/RO)
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✅ **API Endpoints**
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- 6 new REST endpoints
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- RBAC protected
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- Rate limited
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- Fully audited
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### Compliance Status
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| Requirement | Status | Implementation |
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|-------------|--------|----------------|
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| Prevent Information Loss | ✅ COMPLETE | Automated archival, backup, redundancy |
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| Prevent Tampering | ✅ COMPLETE | HMAC signatures, integrity checks, permissions |
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| Retention Policies | ✅ COMPLETE | Automated cleanup, configurable periods |
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| Forensic Capabilities | ✅ COMPLETE | Export, query, archive download |
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---
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## 🚀 Deployment
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### Environment Setup
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```bash
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# Required
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export LOG_SIGNATURE_SECRET="your-strong-random-secret-here"
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# Optional
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export AUDIT_LOG_RETENTION=90
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export AGGREGATED_LOG_RETENTION=90
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```
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### Docker Deployment
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```bash
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# Rebuild container with new features
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docker compose build
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# Start with new configuration
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docker compose up -d
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# Verify logs
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docker logs streamflow
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# Check log management initialization
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docker logs streamflow | grep "LogManagement"
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```
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### Access UI
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1. Login as admin
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2. Navigate to Security → Log Management
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3. View statistics and archives
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4. Perform manual operations as needed
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---
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## ✅ Testing Complete
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All features tested and verified:
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- ✅ Backend API endpoints working
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- ✅ Frontend UI rendering correctly
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- ✅ Translations loaded (EN/RO)
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- ✅ Docker build successful
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- ✅ No route conflicts
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- ✅ RBAC permissions enforced
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- ✅ Automated scheduling active
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**Status:** READY FOR PRODUCTION ✨
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