---
title: "Introduction to Security"
description: "Learn about Sarah's security measures and how to protect your information and that of your customers."
keywords: ["security", "privacy", "protection", "data", "access"]
lastUpdated: "2025-01-26"
---

# Introduction to Security

Security is fundamental in Sarah. This guide explains the security measures implemented and how you can protect your information and that of your customers.

## Security Principles

### Data Protection

Sarah implements multiple security layers to protect:

- **Customer data**: Personal and contact information
- **Financial data**: Payment and transaction information
- **Commercial data**: Inventory, sales, reports
- **Credentials**: Users, passwords, tokens

### Compliance

Sarah complies with security standards:

- **Encryption**: Data encrypted in transit and at rest
- **Authentication**: Robust authentication system
- **Authorization**: Role-based access control
- **Audit**: Logging of important activities

## Security Features

### Authentication

- **Strong passwords**: Complexity requirements
- **Two-factor authentication (2FA)**: Optional but recommended
- **Secure sessions**: Encrypted session tokens
- **Session timeout**: Automatic after inactivity

### Authorization

- **Roles and permissions**: Granular access control
- **Per-company access**: Each user only sees their company
- **Specific permissions**: Control over what each user can do

### Encryption

- **Data in transit**: HTTPS/TLS for all communications
- **Data at rest**: Encryption of sensitive data
- **Credentials**: Encrypted passwords and tokens

### Audit

- **Activity logging**: Logs of important actions
- **Traceability**: Who did what and when
- **Monitoring**: Detection of suspicious activities

## Roles and Permissions

### Administrator (Role ID: 1)

Full system access:

- ✅ Company configuration
- ✅ User management
- ✅ Access to all modules
- ✅ Billing and reports
- ✅ Integration configuration

### Cashier (Role ID: 2)

Focused on cash operations:

- ✅ Point of sale (POS)
- ✅ Cash registers and shifts
- ✅ Basic sales
- ❌ Configuration
- ❌ User management

### Salesperson (Role ID: 3)

Focused on sales:

- ✅ Point of sale (POS)
- ✅ Customer management
- ✅ Sales
- ❌ Cash registers and shifts
- ❌ Configuration

## Best Practices

### For Administrators

- ✅ **Use strong passwords**: Minimum 12 characters, mix of uppercase, lowercase, numbers, and symbols
- ✅ **Enable 2FA**: Two-factor authentication when available
- ✅ **Review users regularly**: Remove users who no longer need access
- ✅ **Assign appropriate roles**: Don't give administrator permissions unnecessarily
- ✅ **Monitor activities**: Review logs regularly

### For Users

- ✅ **Don't share credentials**: Each user must have their own account
- ✅ **Log out**: Log out when finished, especially on shared computers
- ✅ **Report problems**: If you notice something suspicious, report it immediately
- ✅ **Update passwords**: Change passwords periodically

### For the Company

- ✅ **Password policy**: Establish a clear policy
- ✅ **Training**: Train your team on security
- ✅ **Regular review**: Review users and permissions regularly
- ✅ **Backup**: Ensure you have regular backups

## Data Protection

### Customer Data

- **Personal information**: Stored securely
- **Contact data**: Protected and only accessible by authorized users
- **Purchase history**: Only visible to users with permissions

### Financial Data

- **Payment information**: Card data is not stored
- **Transactions**: Processed securely
- **MercadoPago integration**: MercadoPago handles all sensitive information

### Commercial Data

- **Inventory**: Protected and only accessible by authorized users
- **Sales**: Complete history with traceability
- **Reports**: Only authorized users can view reports

## Secure Integrations

### MercadoPago

- **Encrypted credentials**: Tokens stored securely
- **Secure communication**: All communications are HTTPS
- **No card data**: MercadoPago handles all sensitive information

### Correo Argentino

- **Encrypted credentials**: Username and password stored securely
- **Secure communication**: API calls are HTTPS
- **Validation**: Credentials validated before use

### AFIP/ARCA

- **Secure certificates**: Digital certificates for authentication
- **Encrypted communication**: All communications are secure
- **Traceability**: All operations are recorded

## Security Incidents

### If You Suspect a Problem

1. **Change passwords**: Change all passwords immediately
2. **Review users**: Verify there are no unauthorized users
3. **Review activities**: Review recent activity logs
4. **Contact support**: Contact Sarah support immediately

### Prevention

- ✅ **Monitor regularly**: Review users and activities
- ✅ **Train team**: Ensure everyone understands security
- ✅ **Update regularly**: Keep system updated
- ✅ **Use best practices**: Follow security best practices

## Next Steps

- [Roles and Permissions](/docs/security/permissions) - Learn about roles and permissions
- [Authentication and Access](/docs/security/authentication) - Configure authentication