Data Protection

Azotte implements comprehensive data protection measures to ensure customer information privacy, regulatory compliance, and robust security across all operations.

Data Protection Framework

Privacy by Design

Azotte follows privacy-by-design principles:

Proactive measures - Prevention rather than remediation
Privacy as default - Maximum privacy protection without action
Privacy embedded - Integrated into system design
Full functionality - All interests accommodated
End-to-end security - Secure data lifecycle
Visibility and transparency - Stakeholder verification
Respect for user privacy - User-centric approach

Data Classification

enum DataClassification {
  PUBLIC = 'public',           // Marketing materials, documentation
  INTERNAL = 'internal',       // Business operations data
  CONFIDENTIAL = 'confidential', // Customer PII, financial data
  RESTRICTED = 'restricted'    // Payment card data, authentication keys
}

interface DataAsset {
  id: string;
  classification: DataClassification;
  retention_period: number; // days
  encryption_required: boolean;
  access_controls: AccessControl[];
  geographic_restrictions: string[];
}

Legal Basis for Processing

enum ProcessingBasis {
  CONSENT = 'consent',
  CONTRACT = 'contract',
  LEGAL_OBLIGATION = 'legal_obligation',
  VITAL_INTERESTS = 'vital_interests',
  PUBLIC_TASK = 'public_task',
  LEGITIMATE_INTERESTS = 'legitimate_interests'
}

interface DataProcessingRecord {
  processing_activity: string;
  legal_basis: ProcessingBasis;
  data_categories: string[];
  data_subjects: string[];
  recipients: string[];
  retention_period: string;
  security_measures: string[];
}

// Example processing record
const subscriptionProcessing: DataProcessingRecord = {
  processing_activity: 'Subscription billing and payment processing',
  legal_basis: ProcessingBasis.CONTRACT,
  data_categories: ['contact_info', 'payment_data', 'usage_data'],
  data_subjects: ['customers', 'subscribers'],
  recipients: ['payment_processors', 'accounting_system'],
  retention_period: '7 years after contract termination',
  security_measures: ['encryption', 'access_controls', 'audit_logging']
};

Data Subject Rights Implementation

class DataSubjectRights:
    def __init__(self, customer_service):
        self.customer_service = customer_service
        
    async def handle_access_request(self, customer_id: str) -> dict:
        """Right to access - Article 15 GDPR"""
        customer_data = await self.customer_service.get_all_data(customer_id)
        
        return {
            'personal_data': customer_data,
            'processing_purposes': self.get_processing_purposes(),
            'categories_of_data': self.get_data_categories(),
            'recipients': self.get_data_recipients(),
            'retention_period': self.get_retention_periods(),
            'data_source': 'directly_provided'
        }
    
    async def handle_rectification_request(self, customer_id: str, corrections: dict):
        """Right to rectification - Article 16 GDPR"""
        await self.customer_service.update_customer(customer_id, corrections)
        await self.audit_log.record_rectification(customer_id, corrections)
        
    async def handle_erasure_request(self, customer_id: str) -> bool:
        """Right to erasure (right to be forgotten) - Article 17 GDPR"""
        # Check if erasure is legally possible
        if await self.has_legal_obligation_to_retain(customer_id):
            return False
            
        await self.customer_service.anonymize_customer(customer_id)
        await self.audit_log.record_erasure(customer_id)
        return True
        
    async def handle_portability_request(self, customer_id: str) -> bytes:
        """Right to data portability - Article 20 GDPR"""
        customer_data = await self.customer_service.get_portable_data(customer_id)
        
        # Export in machine-readable format (JSON)
        export_data = {
            'export_date': datetime.utcnow().isoformat(),
            'customer_data': customer_data,
            'format': 'application/json',
            'encoding': 'utf-8'
        }
        
        return json.dumps(export_data, indent=2).encode('utf-8')

Data Retention Policies

Retention Schedules

data_retention_policies:
  customer_data:
    active_customers: "duration_of_relationship"
    inactive_customers: "7_years"
    minors: "deleted_upon_majority_request"
    
  payment_data:
    transaction_records: "7_years"
    card_tokens: "until_expired_or_deleted"
    failed_payments: "2_years"
    
  audit_logs:
    security_events: "7_years"
    access_logs: "1_year"
    compliance_records: "10_years"
    
  marketing_data:
    consent_based: "until_consent_withdrawn"
    legitimate_interest: "3_years"
    analytics: "2_years_anonymized"

Automated Data Lifecycle

class DataLifecycleManager {
  private retentionPolicies: Map<string, RetentionPolicy>;
  
  constructor() {
    this.retentionPolicies = new Map();
    this.loadRetentionPolicies();
  }
  
  async scheduleDataReview(): Promise<void> {
    // Daily review of data approaching retention limits
    cron.schedule('0 2 * * *', async () => {
      await this.reviewDataForDeletion();
    });
    
    // Weekly anonymization of expired marketing data
    cron.schedule('0 3 * * 0', async () => {
      await this.anonymizeExpiredData();
    });
  }
  
  async reviewDataForDeletion(): Promise<void> {
    const expiredData = await this.findExpiredData();
    
    for (const record of expiredData) {
      if (await this.canSafelyDelete(record)) {
        await this.scheduleForDeletion(record);
      } else {
        await this.anonymizeRecord(record);
      }
    }
  }
  
  async anonymizeRecord(record: DataRecord): Promise<void> {
    const anonymizedRecord = {
      ...record,
      // Remove or hash PII fields
      name: null,
      email: this.hashEmail(record.email),
      phone: null,
      address: null,
      // Keep business-relevant fields
      created_at: record.created_at,
      subscription_type: record.subscription_type,
      revenue: record.revenue
    };
    
    await this.database.update(record.table, record.id, anonymizedRecord);
    await this.auditLog.recordAnonymization(record.id);
  }
}

Cross-Border Data Transfers

Data Residency Controls

interface DataResidencyPolicy {
  region: string;
  allowed_countries: string[];
  data_classification_restrictions: {
    [key in DataClassification]: boolean;
  };
  transfer_mechanisms: TransferMechanism[];
}

enum TransferMechanism {
  ADEQUACY_DECISION = 'adequacy_decision',
  STANDARD_CONTRACTUAL_CLAUSES = 'scc',
  BINDING_CORPORATE_RULES = 'bcr',
  CONSENT = 'consent'
}

class DataResidencyManager {
  private policies: Map<string, DataResidencyPolicy>;
  
  async validateTransfer(
    data: DataAsset,
    sourceRegion: string,
    targetRegion: string
  ): Promise<TransferValidation> {
    const sourcePolicy = this.policies.get(sourceRegion);
    const targetPolicy = this.policies.get(targetRegion);
    
    // Check if target country is allowed
    if (!sourcePolicy.allowed_countries.includes(targetRegion)) {
      return {
        allowed: false,
        reason: 'Target country not in allowed list',
        required_mechanisms: []
      };
    }
    
    // Check data classification restrictions
    if (!sourcePolicy.data_classification_restrictions[data.classification]) {
      return {
        allowed: false,
        reason: 'Data classification not permitted for transfer',
        required_mechanisms: []
      };
    }
    
    return {
      allowed: true,
      mechanisms: this.getApplicableTransferMechanisms(sourceRegion, targetRegion)
    };
  }
}

Standard Contractual Clauses Implementation

interface SCCImplementation {
  module_one: boolean; // Controller to controller
  module_two: boolean; // Controller to processor
  module_three: boolean; // Processor to processor
  module_four: boolean; // Processor to controller
  
  dpia_completed: boolean; // Data Protection Impact Assessment
  technical_measures: TechnicalMeasure[];
  organizational_measures: OrganizationalMeasure[];
}

const technicalMeasures: TechnicalMeasure[] = [
  {
    measure: 'encryption_in_transit',
    implementation: 'TLS 1.3 with perfect forward secrecy',
    certification: 'FIPS 140-2 Level 3'
  },
  {
    measure: 'encryption_at_rest',
    implementation: 'AES-256 with HSM key management',
    certification: 'Common Criteria EAL4+'
  },
  {
    measure: 'access_controls',
    implementation: 'RBAC with MFA and privileged access management',
    audit_frequency: 'quarterly'
  }
];

Data Breach Response

Incident Response Procedures

enum BreachSeverity {
  LOW = 'low',       // Minimal risk to individuals
  MEDIUM = 'medium', // Some risk, mitigation possible
  HIGH = 'high',     // Significant risk to individuals
  CRITICAL = 'critical' // Immediate severe harm likely
}

interface DataBreach {
  id: string;
  discovered_at: Date;
  severity: BreachSeverity;
  affected_records: number;
  data_categories: string[];
  probable_consequences: string[];
  mitigation_measures: string[];
  notification_required: boolean;
  notification_deadline: Date;
}

class BreachResponseManager {
  async handleDataBreach(breach: DataBreach): Promise<void> {
    // Step 1: Immediate containment
    await this.containBreach(breach);
    
    // Step 2: Assessment and documentation
    await this.assessBreachImpact(breach);
    
    // Step 3: Regulatory notification (within 72 hours)
    if (breach.notification_required) {
      await this.notifyRegulators(breach);
    }
    
    // Step 4: Individual notification (without undue delay)
    if (breach.severity >= BreachSeverity.HIGH) {
      await this.notifyAffectedIndividuals(breach);
    }
    
    // Step 5: Internal processes
    await this.updateSecurityMeasures(breach);
    await this.documentLessonsLearned(breach);
  }
  
  async notifyRegulators(breach: DataBreach): Promise<void> {
    const notification = {
      nature_of_breach: breach.data_categories,
      number_of_affected: breach.affected_records,
      probable_consequences: breach.probable_consequences,
      measures_taken: breach.mitigation_measures,
      dpo_contact: process.env.DPO_CONTACT
    };
    
    await this.dpaApi.submitBreachNotification(notification);
  }
}

Breach Detection Systems

class BreachDetectionSystem:
    def __init__(self):
        self.anomaly_detector = AnomalyDetector()
        self.access_monitor = AccessMonitor()
        
    async def monitor_data_access_patterns(self):
        """Continuous monitoring for unusual access patterns"""
        while True:
            access_logs = await self.get_recent_access_logs()
            
            for log in access_logs:
                anomaly_score = self.anomaly_detector.analyze(log)
                
                if anomaly_score > 0.8:  # High anomaly threshold
                    await self.alert_security_team({
                        'type': 'access_anomaly',
                        'score': anomaly_score,
                        'user_id': log.user_id,
                        'accessed_data': log.data_categories,
                        'timestamp': log.timestamp
                    })
            
            await asyncio.sleep(60)  # Check every minute
    
    async def detect_data_exfiltration(self):
        """Monitor for potential data exfiltration"""
        unusual_exports = await self.find_unusual_export_activity()
        
        for export in unusual_exports:
            if export.volume > self.get_normal_export_volume() * 10:
                await self.trigger_breach_investigation(
                    f"Unusual data export: {export.volume} records by {export.user_id}"
                )

Privacy Controls

interface ConsentRecord {
  customer_id: string;
  processing_purpose: string;
  consent_given: boolean;
  consent_date: Date;
  consent_method: 'explicit' | 'opt_in' | 'implied';
  withdrawn_date?: Date;
  legal_basis: ProcessingBasis;
  granular_consents: {
    marketing_emails: boolean;
    analytics_tracking: boolean;
    third_party_sharing: boolean;
  };
}

class ConsentManager {
  async recordConsent(consent: ConsentRecord): Promise<void> {
    // Validate consent record
    if (!this.isValidConsent(consent)) {
      throw new Error('Invalid consent record');
    }
    
    // Store consent with audit trail
    await this.database.consents.create(consent);
    await this.auditLog.recordConsentGranted(consent);
    
    // Update processing permissions
    await this.updateProcessingPermissions(consent.customer_id);
  }
  
  async withdrawConsent(
    customerId: string,
    processingPurpose: string
  ): Promise<void> {
    const consent = await this.database.consents.findOne({
      customer_id: customerId,
      processing_purpose: processingPurpose
    });
    
    if (!consent) {
      throw new Error('Consent record not found');
    }
    
    // Mark as withdrawn
    consent.consent_given = false;
    consent.withdrawn_date = new Date();
    
    await this.database.consents.update(consent);
    await this.auditLog.recordConsentWithdrawn(consent);
    
    // Stop processing based on withdrawn consent
    await this.cessProcessing(customerId, processingPurpose);
  }
  
  async validateProcessing(
    customerId: string,
    processingPurpose: string
  ): Promise<boolean> {
    const consents = await this.getActiveConsents(customerId);
    
    return consents.some(consent => 
      consent.processing_purpose === processingPurpose &&
      consent.consent_given &&
      !consent.withdrawn_date
    );
  }
}

Privacy Impact Assessments

privacy_impact_assessment:
  trigger_criteria:
    - new_processing_activity
    - high_risk_processing
    - systematic_monitoring
    - special_category_data
    - automated_decision_making
    
  assessment_components:
    - systematic_description_of_processing
    - purposes_and_legitimate_interests
    - necessity_and_proportionality_assessment
    - identification_of_privacy_risks
    - risk_mitigation_measures
    - safeguards_and_security_measures
    - data_subject_consultation_results
    
  approval_process:
    - data_protection_officer_review
    - legal_team_approval
    - management_sign_off
    - supervisory_authority_consultation_if_required

Monitoring & Compliance

Compliance Dashboard

interface ComplianceDashboard {
  gdpr_compliance: {
    data_subject_requests_pending: number;
    average_response_time_hours: number;
    consent_withdrawal_rate: number;
    breach_incidents_this_month: number;
  };
  data_protection: {
    encryption_coverage_percentage: number;
    access_control_violations: number;
    data_retention_compliance_rate: number;
    cross_border_transfer_approvals: number;
  };
  audit_metrics: {
    last_external_audit: Date;
    audit_findings_open: number;
    compliance_training_completion_rate: number;
    policy_updates_pending: number;
  };
}

class ComplianceMonitoring {
  async generateComplianceReport(): Promise<ComplianceReport> {
    return {
      reporting_period: this.getCurrentPeriod(),
      data_processing_activities: await this.getProcessingActivities(),
      data_subject_requests: await this.getDataSubjectRequestStats(),
      security_incidents: await this.getSecurityIncidents(),
      training_records: await this.getTrainingCompletionData(),
      recommendations: await this.generateRecommendations()
    };
  }
}

Best Practices

Data Minimization

Collect only necessary data - Purpose limitation principle
Regular data audits - Identify and remove unnecessary data
Granular consent - Allow specific consent for different purposes
Automated deletion - Implement retention period enforcement
Data mapping - Maintain comprehensive data flow documentation

Accountability Measures

Data protection policies - Clear, accessible privacy policies
Staff training - Regular privacy and security training
Vendor management - Data processing agreements with third parties
Technical measures - Privacy-enhancing technologies
Regular assessments - Ongoing privacy impact assessments

Next Steps

Learn about Tokenization
Understand Encryption
Explore PCI Compliance

Data Protection Framework​

Privacy by Design​

Data Classification​

GDPR Compliance​

Legal Basis for Processing​

Data Subject Rights Implementation​

Data Retention Policies​

Retention Schedules​

Automated Data Lifecycle​

Cross-Border Data Transfers​

Data Residency Controls​

Standard Contractual Clauses Implementation​

Data Breach Response​

Incident Response Procedures​

Breach Detection Systems​

Privacy Controls​

Consent Management​

Privacy Impact Assessments​

Monitoring & Compliance​

Compliance Dashboard​

Best Practices​

Data Minimization​

Accountability Measures​

Next Steps​