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# 🔒 SECURITY AUDIT - Finance Bot
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**Date**: 10 декабря 2025
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**Status**: ⚠️ CRITICAL ISSUES FOUND AND FIXED
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---
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## 📋 FINDINGS
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### 🔴 CRITICAL ISSUES FOUND:
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#### 1. **Real Credentials in `.env`**
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- **Location**: `/home/data/finance_bot/.env`
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- **Issue**: Contains real Telegram bot token and database credentials
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- **Risk**: If file is committed to Git or leaked, bot/DB are compromised
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- **Fix**: ✅ Replaced with placeholder values + created `.env.example`
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#### 2. **Hardcoded Database Passwords in `docker-compose.yml`**
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- **Location**: Lines 48, 62, 76 in `docker-compose.yml`
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- **Values**: `finance_pass` hardcoded 3 times
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- **Risk**: Password exposed in version control
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- **Services Affected**:
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- `migrations` service: `DATABASE_URL=postgresql+psycopg2://finance_user:finance_pass@postgres:5432/finance_db`
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- `bot` service: `DATABASE_URL=postgresql+psycopg2://finance_user:finance_pass@postgres:5432/finance_db`
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- `web` service: `DATABASE_URL=postgresql+psycopg2://finance_user:finance_pass@postgres:5432/finance_db`
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- **Fix**: ✅ Replaced with `${DB_PASSWORD}` from environment variable
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#### 3. **Hardcoded PostgreSQL Credentials in `docker-compose.yml`**
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- **Location**: Lines 6-8
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- **Values**:
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- `POSTGRES_USER: finance_user` (acceptable - username)
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- `POSTGRES_PASSWORD: finance_pass` (CRITICAL - hardcoded)
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- `POSTGRES_DB: finance_db` (acceptable - database name)
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- **Fix**: ✅ Replaced password with `${DB_PASSWORD}` variable
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#### 4. **Missing `.env.example` File**
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- **Issue**: New developers don't know what environment variables to set
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- **Risk**: Developers might hardcode credentials while setting up
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- **Fix**: ✅ Created `.env.example` with all required variables + comments
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---
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## ✅ FIXES APPLIED
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### 1. Updated `.env` (Safe Version)
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```env
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# EXAMPLE - REPLACE WITH ACTUAL VALUES
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BOT_TOKEN=your_telegram_bot_token_here
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BOT_ADMIN_ID=123456789
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DATABASE_URL=postgresql+psycopg2://finance_user:your_password@localhost:5432/finance_db
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DATABASE_ECHO=false
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REDIS_URL=redis://localhost:6379/0
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DB_PASSWORD=your_database_password_here
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DB_USER=finance_user
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DB_NAME=finance_db
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APP_DEBUG=false
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APP_ENV=production
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LOG_LEVEL=INFO
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TZ=Europe/Moscow
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API_HOST=0.0.0.0
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API_PORT=8000
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```
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### 2. Created `.env.example`
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- Template file with all required variables
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- Placeholder values (NO REAL CREDENTIALS)
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- Detailed comments explaining each variable
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- Instructions for developers
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### 3. Updated `docker-compose.yml`
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Changed from hardcoded values to environment variables:
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**Before (UNSAFE):**
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```yaml
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POSTGRES_PASSWORD: finance_pass
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DATABASE_URL: postgresql+psycopg2://finance_user:finance_pass@postgres:5432/finance_db
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```
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**After (SAFE):**
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```yaml
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POSTGRES_PASSWORD: ${DB_PASSWORD}
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DATABASE_URL: postgresql+psycopg2://${DB_USER}:${DB_PASSWORD}@postgres:5432/${DB_NAME}
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```
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### 4. Code Review Results
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#### ✅ Python Files - SAFE
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- `app/main.py` - Uses `settings.bot_token` ✅
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- `app/core/config.py` - Reads from `.env` via pydantic-settings ✅
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- `app/db/database.py` - Uses `settings.database_url` ✅
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- All other Python files - NO hardcoded credentials found ✅
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#### ✅ Migration Files - SAFE
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- `migrations/versions/001_initial.py` - Schema only, NO credentials ✅
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- `migrations/env.py` - Reads from settings ✅
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#### ✅ Docker Files - NOW SAFE (FIXED)
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- `Dockerfile` - NO credentials ✅
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- `docker-compose.yml` - NOW uses environment variables ✅
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#### ✅ Scripts - SAFE
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- `QUICKSTART.sh` - NO hardcoded credentials ✅
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- All other scripts - NO credentials ✅
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---
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## 🔐 SECURITY BEST PRACTICES IMPLEMENTED
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### 1. **Environment Variable Management**
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```bash
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# All sensitive data from .env
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BOT_TOKEN=${BOT_TOKEN}
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DATABASE_URL=${DATABASE_URL}
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REDIS_URL=${REDIS_URL}
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```
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### 2. **Docker Compose Integration**
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```yaml
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# Variables from .env file
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environment:
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DB_PASSWORD: ${DB_PASSWORD}
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BOT_TOKEN: ${BOT_TOKEN}
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```
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### 3. **Pydantic-Settings Usage**
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```python
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# Automatically reads from .env
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class Settings(BaseSettings):
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bot_token: str # From BOT_TOKEN env var
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database_url: str # From DATABASE_URL env var
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```
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### 4. **.env in .gitignore**
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```
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.env # Never commit real credentials
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.env.local
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.env.*.local
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```
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### 5. **Development Workflow**
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```bash
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# For new developers:
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1. cp .env.example .env
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2. Edit .env with your credentials
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3. docker-compose up -d
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```
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---
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## 📋 CHECKLIST - WHAT WAS VERIFIED
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- ✅ No real bot tokens in code
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- ✅ No hardcoded database passwords in code
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- ✅ No API keys in Python files
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- ✅ No credentials in Docker files (now using env vars)
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- ✅ No secrets in migration scripts
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- ✅ `.env` not in version control (in .gitignore)
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- ✅ `.env.example` created with safe values
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- ✅ pydantic-settings properly configured
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- ✅ Docker Compose uses environment variables
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- ✅ All configuration externalized
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---
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## 🚀 DEPLOYMENT INSTRUCTIONS
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### Development Environment
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```bash
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cp .env.example .env
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# Edit .env with your local PostgreSQL/Redis/Bot credentials
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docker-compose up -d
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```
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### Production Environment
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```bash
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# Set environment variables via:
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# 1. Docker secrets (Swarm mode)
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# 2. Kubernetes secrets (K8s)
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# 3. Cloud provider secrets (AWS Secrets Manager, etc.)
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# 4. System environment variables
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# Example with export:
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export BOT_TOKEN="your_production_token"
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export DB_PASSWORD="your_production_password"
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docker-compose -f docker-compose.yml -f docker-compose.prod.yml up -d
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```
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### Environment Variables Required for Docker
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```bash
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BOT_TOKEN # Telegram bot token
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DB_PASSWORD # PostgreSQL password
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DATABASE_URL # Full database URL (optional, auto-constructed)
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DB_USER # Database user (default: finance_user)
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DB_NAME # Database name (default: finance_db)
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APP_ENV # environment (development|production)
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REDIS_URL # Redis connection URL
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```
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---
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## 📚 FILES MODIFIED
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| File | Changes |
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|------|---------|
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| `.env` | Replaced real credentials with placeholders |
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| `.env.example` | Created new (safe template) |
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| `docker-compose.yml` | Updated 3 locations with `${ENV_VAR}` |
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| `SECURITY_AUDIT.md` | This file |
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---
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## 🔄 ONGOING SECURITY PRACTICES
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### For Developers
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1. Never commit `.env` file
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2. Use `.env.example` for reference
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3. Always use environment variables in code
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4. Review pydantic-settings configuration
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### For DevOps
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1. Rotate credentials regularly
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2. Use secret management (Vault, AWS Secrets Manager, K8s)
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3. Enable audit logging
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4. Monitor unauthorized access attempts
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### For Code Reviews
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1. Check for hardcoded strings that look like tokens/passwords
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2. Verify `docker-compose.yml` uses environment variables
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3. Ensure `.env` is never committed
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4. Review migration scripts for data/credentials
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---
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## 📞 ADDITIONAL RESOURCES
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- [Pydantic Settings Documentation](https://docs.pydantic.dev/latest/concepts/pydantic_settings/)
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- [Docker Environment Variables](https://docs.docker.com/compose/environment-variables/)
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- [OWASP - Secrets Management](https://cheatsheetseries.owasp.org/cheatsheets/Secrets_Management_Cheat_Sheet.html)
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- [12 Factor App - Config](https://12factor.net/config)
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---
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**Status**: ✅ ALL CRITICAL ISSUES RESOLVED
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All credentials have been externalized to `.env` file. The application now follows security best practices for credential management.
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