335 lines
7.8 KiB
ReStructuredText
335 lines
7.8 KiB
ReStructuredText
Security Architecture
|
|
===================
|
|
|
|
This document outlines the security architecture of the AI-Writer platform, including authentication, authorization, data protection, and security best practices.
|
|
|
|
Authentication and Authorization
|
|
------------------------------
|
|
|
|
User Authentication
|
|
~~~~~~~~~~~~~~~~~
|
|
|
|
AI-Writer implements a multi-layered authentication system:
|
|
|
|
1. **Password-based Authentication**
|
|
|
|
* Passwords are hashed using bcrypt with appropriate work factors
|
|
* Password complexity requirements are enforced
|
|
* Account lockout after multiple failed attempts
|
|
* Password reset via secure email workflow
|
|
|
|
2. **API Key Authentication**
|
|
|
|
* Unique API keys for programmatic access
|
|
* Keys are stored using secure hashing
|
|
* Keys can be scoped to specific permissions
|
|
* Keys can be revoked at any time
|
|
|
|
3. **OAuth 2.0 (for multi-user deployments)**
|
|
|
|
* Standard OAuth 2.0 flow with authorization code
|
|
* JWT tokens with appropriate expiration
|
|
* Refresh token rotation
|
|
* PKCE for public clients
|
|
|
|
Authorization Model
|
|
~~~~~~~~~~~~~~~~
|
|
|
|
The platform uses a role-based access control (RBAC) system:
|
|
|
|
1. **User Roles**
|
|
|
|
* **Admin**: Full system access
|
|
* **Editor**: Content creation and editing
|
|
* **Viewer**: Read-only access to content
|
|
* **API**: Programmatic access with limited scope
|
|
|
|
2. **Permission Scopes**
|
|
|
|
* `content:read`: View content
|
|
* `content:write`: Create and edit content
|
|
* `content:delete`: Delete content
|
|
* `user:read`: View user information
|
|
* `user:write`: Modify user information
|
|
* `settings:read`: View settings
|
|
* `settings:write`: Modify settings
|
|
* `api:manage`: Manage API keys
|
|
|
|
3. **Resource-level Permissions**
|
|
|
|
* Permissions are checked at the resource level
|
|
* Users can only access their own content
|
|
* Sharing functionality with explicit permissions
|
|
|
|
Data Protection
|
|
-------------
|
|
|
|
Encryption
|
|
~~~~~~~~~
|
|
|
|
1. **Data in Transit**
|
|
|
|
* TLS 1.3 for all communications
|
|
* Strong cipher suites
|
|
* HSTS implementation
|
|
* Certificate pinning for API clients
|
|
|
|
2. **Data at Rest**
|
|
|
|
* Database encryption
|
|
* Encrypted file storage
|
|
* Secure key management
|
|
* Regular key rotation
|
|
|
|
3. **Sensitive Data**
|
|
|
|
* API keys and credentials are encrypted
|
|
* PII is encrypted with separate keys
|
|
* Encryption keys are properly secured
|
|
|
|
API Key Security
|
|
~~~~~~~~~~~~~~
|
|
|
|
1. **Key Generation**
|
|
|
|
* Keys are generated using cryptographically secure random functions
|
|
* Sufficient entropy (256 bits)
|
|
* Keys follow a consistent format for validation
|
|
|
|
2. **Key Storage**
|
|
|
|
* Only key hashes are stored in the database
|
|
* Secure comparison for validation
|
|
* Keys are never logged or exposed in error messages
|
|
|
|
3. **Key Management**
|
|
|
|
* Keys can be rotated regularly
|
|
* Unused keys are automatically expired
|
|
* Key usage is logged for audit purposes
|
|
|
|
Secure Development Practices
|
|
--------------------------
|
|
|
|
Input Validation
|
|
~~~~~~~~~~~~~~
|
|
|
|
1. **API Input Validation**
|
|
|
|
* All input is validated against schemas
|
|
* Type checking and constraint validation
|
|
* Protection against injection attacks
|
|
* Input sanitization where appropriate
|
|
|
|
2. **Content Validation**
|
|
|
|
* Content is scanned for malicious elements
|
|
* HTML/Markdown sanitization
|
|
* File upload validation and scanning
|
|
|
|
3. **Error Handling**
|
|
|
|
* Secure error handling that doesn't leak sensitive information
|
|
* Consistent error responses
|
|
* Detailed internal logging for troubleshooting
|
|
|
|
Dependency Management
|
|
~~~~~~~~~~~~~~~~~~
|
|
|
|
1. **Dependency Scanning**
|
|
|
|
* Regular scanning for vulnerable dependencies
|
|
* Automated updates for security patches
|
|
* Dependency pinning for stability
|
|
|
|
2. **Minimal Dependencies**
|
|
|
|
* Only necessary dependencies are included
|
|
* Regular dependency audits
|
|
* Preference for well-maintained libraries
|
|
|
|
3. **Containerization**
|
|
|
|
* Minimal base images
|
|
* Non-root container execution
|
|
* Image scanning for vulnerabilities
|
|
|
|
Logging and Monitoring
|
|
--------------------
|
|
|
|
Security Logging
|
|
~~~~~~~~~~~~~~
|
|
|
|
1. **Authentication Events**
|
|
|
|
* Login attempts (successful and failed)
|
|
* Password changes and resets
|
|
* API key creation and usage
|
|
* Session management events
|
|
|
|
2. **Authorization Events**
|
|
|
|
* Permission checks
|
|
* Access denials
|
|
* Privilege escalation
|
|
* Role changes
|
|
|
|
3. **System Events**
|
|
|
|
* Configuration changes
|
|
* Service starts and stops
|
|
* Database migrations
|
|
* Backup and restore operations
|
|
|
|
Monitoring and Alerting
|
|
~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
1. **Security Monitoring**
|
|
|
|
* Real-time monitoring for suspicious activities
|
|
* Anomaly detection for unusual patterns
|
|
* Rate limiting and abuse detection
|
|
* Geographic anomaly detection
|
|
|
|
2. **Performance Monitoring**
|
|
|
|
* Resource usage tracking
|
|
* API response time monitoring
|
|
* Error rate monitoring
|
|
* Database performance tracking
|
|
|
|
3. **Alerting**
|
|
|
|
* Immediate alerts for security incidents
|
|
* Escalation procedures
|
|
* On-call rotation
|
|
* Incident response playbooks
|
|
|
|
Compliance and Privacy
|
|
--------------------
|
|
|
|
Data Governance
|
|
~~~~~~~~~~~~~
|
|
|
|
1. **Data Classification**
|
|
|
|
* Clear classification of data sensitivity
|
|
* Handling procedures for each classification
|
|
* Access controls based on classification
|
|
* Retention policies by data type
|
|
|
|
2. **Data Minimization**
|
|
|
|
* Only necessary data is collected
|
|
* Automatic data pruning
|
|
* Anonymization where possible
|
|
* Purpose limitation
|
|
|
|
3. **User Consent**
|
|
|
|
* Clear consent mechanisms
|
|
* Granular permission options
|
|
* Easy consent withdrawal
|
|
* Consent records
|
|
|
|
Privacy Features
|
|
~~~~~~~~~~~~~
|
|
|
|
1. **User Privacy Controls**
|
|
|
|
* Data export functionality
|
|
* Account deletion
|
|
* Privacy settings management
|
|
* Usage tracking opt-out
|
|
|
|
2. **Data Portability**
|
|
|
|
* Export in standard formats
|
|
* Complete data export
|
|
* Machine-readable formats
|
|
* Import capabilities
|
|
|
|
3. **Transparency**
|
|
|
|
* Clear privacy policy
|
|
* Data usage explanations
|
|
* Third-party data sharing disclosure
|
|
* Processing activities documentation
|
|
|
|
Security Testing
|
|
--------------
|
|
|
|
Vulnerability Management
|
|
~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
1. **Security Testing**
|
|
|
|
* Regular penetration testing
|
|
* Static application security testing (SAST)
|
|
* Dynamic application security testing (DAST)
|
|
* Software composition analysis (SCA)
|
|
|
|
2. **Bug Bounty Program**
|
|
|
|
* Responsible disclosure policy
|
|
* Security researcher engagement
|
|
* Vulnerability triage process
|
|
* Remediation tracking
|
|
|
|
3. **Security Reviews**
|
|
|
|
* Code reviews with security focus
|
|
* Architecture security reviews
|
|
* Threat modeling
|
|
* Security design reviews
|
|
|
|
Incident Response
|
|
~~~~~~~~~~~~~~~
|
|
|
|
1. **Incident Response Plan**
|
|
|
|
* Defined incident response procedures
|
|
* Roles and responsibilities
|
|
* Communication templates
|
|
* Escalation paths
|
|
|
|
2. **Breach Notification**
|
|
|
|
* Legal compliance with notification requirements
|
|
* User communication plan
|
|
* Regulatory reporting procedures
|
|
* Post-incident analysis
|
|
|
|
3. **Recovery Procedures**
|
|
|
|
* Backup and restore testing
|
|
* Business continuity planning
|
|
* Disaster recovery procedures
|
|
* Service level objectives
|
|
|
|
Security Roadmap
|
|
--------------
|
|
|
|
Planned Security Enhancements
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
1. **Short-term (0-6 months)**
|
|
|
|
* Implement multi-factor authentication
|
|
* Enhance API key management
|
|
* Improve security logging
|
|
* Conduct initial penetration test
|
|
|
|
2. **Medium-term (6-12 months)**
|
|
|
|
* Implement security information and event management (SIEM)
|
|
* Enhance data encryption
|
|
* Develop comprehensive security training
|
|
* Implement automated security testing in CI/CD
|
|
|
|
3. **Long-term (12+ months)**
|
|
|
|
* Achieve SOC 2 compliance
|
|
* Implement advanced threat protection
|
|
* Develop zero-trust architecture
|
|
* Enhance privacy features for international compliance |