Zero-Trust Security Framework for Web3 Document Compliance
SealGuard's enterprise security architecture implements a comprehensive zero-trust security model designed for regulated industries. This architecture addresses enterprise-grade security requirements while maintaining the decentralized benefits of Web3 infrastructure.
Security Layers (Outside → Inside)
┌─────────────────────────────────────────────────────────────┐
│ Layer 7: Compliance & Governance │
├─────────────────────────────────────────────────────────────┤
│ Layer 6: Application Security (WAF, API Security) │
├─────────────────────────────────────────────────────────────┤
│ Layer 5: Identity & Access Management (Zero Trust) │
├─────────────────────────────────────────────────────────────┤
│ Layer 4: Data Protection (Encryption, DLP) │
├─────────────────────────────────────────────────────────────┤
│ Layer 3: Network Security (VPC, Firewalls, IDS/IPS) │
├─────────────────────────────────────────────────────────────┤
│ Layer 2: Infrastructure Security (Container, K8s) │
├─────────────────────────────────────────────────────────────┤
│ Layer 1: Hardware Security (HSM, Secure Enclaves) │
└─────────────────────────────────────────────────────────────┘
Threat: Unauthorized users impersonating legitimate entities
Mitigations:
// Multi-factor authentication with hardware tokens
class MFAService {
async authenticateUser(
userId: string,
credentials: UserCredentials,
hardwareToken: HardwareToken,
biometricData?: BiometricData
): Promise<AuthenticationResult> {
// Step 1: Verify primary credentials
const primaryAuth = await this.verifyCredentials(userId, credentials);
if (!primaryAuth.success) {
throw new AuthenticationError('Primary authentication failed');
}
// Step 2: Verify hardware token (FIDO2/WebAuthn)
const tokenAuth = await this.verifyHardwareToken(hardwareToken);
if (!tokenAuth.success) {
throw new AuthenticationError('Hardware token verification failed');
}
// Step 3: Optional biometric verification
if (biometricData) {
const biometricAuth = await this.verifyBiometric(userId, biometricData);
if (!biometricAuth.success) {
throw new AuthenticationError('Biometric verification failed');
}
}
// Step 4: Generate secure session token
const sessionToken = await this.generateSecureToken(userId, {
authMethods: ['password', 'hardware_token', 'biometric'],
riskScore: await this.calculateRiskScore(userId),
expiresAt: Date.now() + (8 * 60 * 60 * 1000) // 8 hours
});
return {
success: true,
sessionToken,
permissions: await this.getUserPermissions(userId)
};
}
}Threat: Unauthorized modification of documents or system data
Mitigations:
// Immutable audit trail with cryptographic verification
class TamperProofAuditTrail {
private merkleTree: MerkleTree;
private hashChain: string[];
async recordAction(
action: AuditAction,
actor: string,
resourceId: string,
metadata: any
): Promise<AuditRecord> {
// Create tamper-proof record
const record: AuditRecord = {
id: generateUUID(),
timestamp: Date.now(),
action,
actor,
resourceId,
metadata,
previousHash: this.getLastHash(),
signature: await this.signRecord(action, actor, resourceId, metadata)
};
// Calculate current hash
record.currentHash = await this.calculateHash(record);
// Add to Merkle tree for batch verification
this.merkleTree.addLeaf(record.currentHash);
// Update hash chain
this.hashChain.push(record.currentHash);
// Store on blockchain for immutability
await this.storeOnBlockchain(record);
return record;
}
async verifyIntegrity(
fromRecord: string,
toRecord: string
): Promise<IntegrityVerificationResult> {
const records = await this.getRecordRange(fromRecord, toRecord);
for (let i = 0; i < records.length; i++) {
const record = records[i];
// Verify hash chain
const expectedPreviousHash = i > 0 ? records[i-1].currentHash : null;
if (record.previousHash !== expectedPreviousHash) {
return {
valid: false,
error: `Hash chain broken at record ${record.id}`,
tamperedRecord: record.id
};
}
// Verify signature
const signatureValid = await this.verifySignature(record);
if (!signatureValid) {
return {
valid: false,
error: `Invalid signature for record ${record.id}`,
tamperedRecord: record.id
};
}
// Verify blockchain storage
const blockchainRecord = await this.getBlockchainRecord(record.id);
if (!this.recordsMatch(record, blockchainRecord)) {
return {
valid: false,
error: `Blockchain mismatch for record ${record.id}`,
tamperedRecord: record.id
};
}
}
return { valid: true };
}
}Threat: Users denying actions they performed
Mitigations:
// Non-repudiation service with digital signatures
class NonRepudiationService {
async createNonRepudiableAction(
userId: string,
action: string,
data: any,
userPrivateKey: string
): Promise<NonRepudiableRecord> {
// Create action payload
const payload = {
userId,
action,
data,
timestamp: Date.now(),
nonce: generateNonce()
};
// Generate user signature
const userSignature = await this.signWithPrivateKey(
JSON.stringify(payload),
userPrivateKey
);
// Generate system witness signature
const systemSignature = await this.signWithSystemKey(
JSON.stringify({ ...payload, userSignature })
);
// Create timestamped proof
const timestampProof = await this.createTimestampProof(payload);
const record: NonRepudiableRecord = {
id: generateUUID(),
payload,
userSignature,
systemSignature,
timestampProof,
blockchainTxHash: await this.storeOnBlockchain({
payload,
userSignature,
systemSignature
})
};
return record;
}
async verifyNonRepudiation(
recordId: string
): Promise<NonRepudiationVerificationResult> {
const record = await this.getRecord(recordId);
// Verify user signature
const userPublicKey = await this.getUserPublicKey(record.payload.userId);
const userSigValid = await this.verifySignature(
JSON.stringify(record.payload),
record.userSignature,
userPublicKey
);
// Verify system signature
const systemSigValid = await this.verifySignature(
JSON.stringify({ ...record.payload, userSignature: record.userSignature }),
record.systemSignature,
this.systemPublicKey
);
// Verify timestamp proof
const timestampValid = await this.verifyTimestampProof(
record.timestampProof
);
// Verify blockchain storage
const blockchainValid = await this.verifyBlockchainRecord(
record.blockchainTxHash
);
return {
valid: userSigValid && systemSigValid && timestampValid && blockchainValid,
userSignatureValid: userSigValid,
systemSignatureValid: systemSigValid,
timestampValid,
blockchainValid
};
}
}Threat: Unauthorized access to sensitive document content
Mitigations:
// Zero-knowledge document verification
class ZeroKnowledgeVerification {
async generateDocumentProof(
document: Document,
verificationCriteria: VerificationCriteria,
userPrivateKey: string
): Promise<ZKProof> {
// Create circuit inputs without revealing document content
const circuitInputs = {
documentHash: document.hash,
documentSize: document.size,
documentType: document.type,
complianceLevel: document.complianceLevel,
verificationCriteria,
userSecret: await this.deriveUserSecret(userPrivateKey)
};
// Generate zero-knowledge proof
const proof = await snarkjs.groth16.fullProve(
circuitInputs,
'./circuits/document_verification.wasm',
'./circuits/document_verification_final.zkey'
);
return {
proof: proof.proof,
publicSignals: proof.publicSignals,
verificationKey: await this.getVerificationKey()
};
}
async verifyDocumentProof(
proof: ZKProof,
expectedCriteria: VerificationCriteria
): Promise<boolean> {
// Verify proof without accessing document content
const verified = await snarkjs.groth16.verify(
proof.verificationKey,
proof.publicSignals,
proof.proof
);
if (!verified) {
return false;
}
// Verify public signals match expected criteria
return this.validatePublicSignals(proof.publicSignals, expectedCriteria);
}
}Threat: System unavailability due to resource exhaustion
Mitigations:
// Advanced rate limiting and DDoS protection
class DDoSProtection {
private rateLimiters: Map<string, RateLimiter> = new Map();
private suspiciousIPs: Set<string> = new Set();
async checkRateLimit(
clientId: string,
endpoint: string,
clientIP: string
): Promise<RateLimitResult> {
const key = `${clientId}:${endpoint}`;
// Get or create rate limiter for this client/endpoint
let limiter = this.rateLimiters.get(key);
if (!limiter) {
limiter = new RateLimiter({
windowMs: 60 * 1000, // 1 minute
max: this.getEndpointLimit(endpoint),
skipSuccessfulRequests: false,
skipFailedRequests: false
});
this.rateLimiters.set(key, limiter);
}
// Check rate limit
const result = await limiter.checkLimit();
if (!result.allowed) {
// Track suspicious behavior
await this.trackSuspiciousActivity(clientId, clientIP, endpoint);
// Implement progressive penalties
const penalty = await this.calculatePenalty(clientId, clientIP);
return {
allowed: false,
retryAfter: result.retryAfter + penalty,
reason: 'Rate limit exceeded'
};
}
return { allowed: true };
}
private async trackSuspiciousActivity(
clientId: string,
clientIP: string,
endpoint: string
): Promise<void> {
const activity = {
clientId,
clientIP,
endpoint,
timestamp: Date.now(),
type: 'rate_limit_exceeded'
};
await this.logSuspiciousActivity(activity);
// Check if IP should be temporarily blocked
const recentViolations = await this.getRecentViolations(clientIP);
if (recentViolations.length > 10) {
this.suspiciousIPs.add(clientIP);
// Notify security team
await this.notifySecurityTeam({
type: 'potential_ddos',
clientIP,
violationCount: recentViolations.length
});
}
}
}Threat: Users gaining unauthorized access to higher privilege levels
Mitigations:
// Principle of least privilege with dynamic access control
class DynamicAccessControl {
async evaluateAccess(
userId: string,
resource: string,
action: string,
context: AccessContext
): Promise<AccessDecision> {
// Get user's base permissions
const basePermissions = await this.getUserPermissions(userId);
// Evaluate contextual factors
const riskScore = await this.calculateRiskScore({
userId,
resource,
action,
context
});
// Apply time-based restrictions
const timeRestrictions = await this.getTimeRestrictions(userId);
const currentTime = new Date();
if (!this.isWithinAllowedTime(currentTime, timeRestrictions)) {
return {
allowed: false,
reason: 'Access outside allowed time window',
requiresApproval: true
};
}
// Apply location-based restrictions
const locationRestrictions = await this.getLocationRestrictions(userId);
if (!this.isFromAllowedLocation(context.clientIP, locationRestrictions)) {
return {
allowed: false,
reason: 'Access from unauthorized location',
requiresApproval: true
};
}
// Check for privilege escalation attempts
const requiredPrivilege = await this.getRequiredPrivilege(resource, action);
if (requiredPrivilege > basePermissions.maxPrivilege) {
// Require additional approval for privilege escalation
return {
allowed: false,
reason: 'Insufficient privileges',
requiresApproval: true,
approvalRequired: {
type: 'privilege_escalation',
requiredApprovers: await this.getRequiredApprovers(requiredPrivilege),
justificationRequired: true
}
};
}
// Apply risk-based controls
if (riskScore > 0.7) {
return {
allowed: false,
reason: 'High risk score detected',
requiresApproval: true,
additionalVerification: {
type: 'step_up_authentication',
methods: ['hardware_token', 'biometric']
}
};
}
return {
allowed: true,
conditions: {
sessionTimeout: this.calculateSessionTimeout(riskScore),
auditLevel: this.calculateAuditLevel(riskScore),
monitoringLevel: 'enhanced'
}
};
}
}// Web Application Firewall (WAF) configuration
class WebApplicationFirewall {
private rules: WAFRule[] = [
{
id: 'sql-injection-protection',
pattern: /('|(\-\-)|(;)|(\||\|)|(\*|\*))/i,
action: 'block',
severity: 'high'
},
{
id: 'xss-protection',
pattern: /<script[^>]*>.*?<\/script>/gi,
action: 'sanitize',
severity: 'high'
},
{
id: 'file-upload-validation',
pattern: /\.(exe|bat|cmd|scr|pif|com)$/i,
action: 'block',
severity: 'critical'
}
];
async analyzeRequest(request: HTTPRequest): Promise<WAFResult> {
const violations: WAFViolation[] = [];
// Check all WAF rules
for (const rule of this.rules) {
const violation = await this.checkRule(request, rule);
if (violation) {
violations.push(violation);
}
}
// Calculate overall risk score
const riskScore = this.calculateRiskScore(violations);
// Determine action
if (riskScore >= 0.8) {
return {
action: 'block',
reason: 'High risk request detected',
violations
};
} else if (riskScore >= 0.5) {
return {
action: 'challenge',
reason: 'Medium risk request - additional verification required',
violations
};
}
return {
action: 'allow',
violations
};
}
}// API Security Gateway
class APISecurityGateway {
async validateAPIRequest(
request: APIRequest,
endpoint: APIEndpoint
): Promise<APIValidationResult> {
// 1. Authentication validation
const authResult = await this.validateAuthentication(request);
if (!authResult.valid) {
return {
valid: false,
error: 'Authentication failed',
statusCode: 401
};
}
// 2. Authorization validation
const authzResult = await this.validateAuthorization(
authResult.user,
endpoint,
request.method
);
if (!authzResult.allowed) {
return {
valid: false,
error: 'Insufficient permissions',
statusCode: 403
};
}
// 3. Input validation
const inputResult = await this.validateInput(request, endpoint.schema);
if (!inputResult.valid) {
return {
valid: false,
error: 'Invalid input data',
details: inputResult.errors,
statusCode: 400
};
}
// 4. Rate limiting
const rateLimitResult = await this.checkRateLimit(
authResult.user.id,
endpoint.path
);
if (!rateLimitResult.allowed) {
return {
valid: false,
error: 'Rate limit exceeded',
retryAfter: rateLimitResult.retryAfter,
statusCode: 429
};
}
// 5. Content validation
const contentResult = await this.validateContent(request);
if (!contentResult.safe) {
return {
valid: false,
error: 'Potentially malicious content detected',
statusCode: 400
};
}
return {
valid: true,
user: authResult.user,
permissions: authzResult.permissions
};
}
}// Zero Trust Identity Provider
class ZeroTrustIdentityProvider {
async authenticateAndAuthorize(
credentials: AuthenticationCredentials,
requestContext: RequestContext
): Promise<ZeroTrustResult> {
// Step 1: Verify identity
const identityResult = await this.verifyIdentity(credentials);
if (!identityResult.verified) {
return {
success: false,
reason: 'Identity verification failed'
};
}
// Step 2: Assess device trust
const deviceTrust = await this.assessDeviceTrust(requestContext.device);
// Step 3: Evaluate network trust
const networkTrust = await this.evaluateNetworkTrust(requestContext.network);
// Step 4: Calculate overall trust score
const trustScore = this.calculateTrustScore({
identity: identityResult.confidence,
device: deviceTrust.score,
network: networkTrust.score,
behavioral: await this.getBehavioralScore(identityResult.userId)
});
// Step 5: Apply conditional access policies
const accessPolicies = await this.getAccessPolicies(identityResult.userId);
const policyResult = await this.evaluatePolicies(
accessPolicies,
trustScore,
requestContext
);
if (!policyResult.allowed) {
return {
success: false,
reason: policyResult.reason,
remediation: policyResult.remediation
};
}
// Step 6: Generate contextual access token
const accessToken = await this.generateContextualToken({
userId: identityResult.userId,
trustScore,
deviceId: requestContext.device.id,
networkContext: requestContext.network,
permissions: policyResult.permissions,
constraints: policyResult.constraints
});
return {
success: true,
accessToken,
trustScore,
permissions: policyResult.permissions,
constraints: policyResult.constraints
};
}
}// Privileged Access Management System
class PrivilegedAccessManager {
async requestPrivilegedAccess(
userId: string,
targetResource: string,
requestedPrivileges: string[],
justification: string,
duration: number
): Promise<PrivilegedAccessResult> {
// Create access request
const request: PrivilegedAccessRequest = {
id: generateUUID(),
userId,
targetResource,
requestedPrivileges,
justification,
duration,
requestedAt: Date.now(),
status: 'pending'
};
// Determine required approvers
const approvers = await this.getRequiredApprovers(
targetResource,
requestedPrivileges
);
// Check for emergency access
const isEmergency = await this.isEmergencyAccess(request);
if (isEmergency) {
// Grant temporary emergency access with enhanced monitoring
const emergencyAccess = await this.grantEmergencyAccess(request);
// Notify security team
await this.notifySecurityTeam({
type: 'emergency_access_granted',
request,
grantedAccess: emergencyAccess
});
return {
granted: true,
accessToken: emergencyAccess.token,
expiresAt: emergencyAccess.expiresAt,
conditions: {
monitoring: 'enhanced',
auditLevel: 'detailed',
sessionRecording: true
}
};
}
// Normal approval workflow
await this.initiateApprovalWorkflow(request, approvers);
return {
granted: false,
requestId: request.id,
status: 'pending_approval',
requiredApprovers: approvers.map(a => a.role),
estimatedApprovalTime: this.estimateApprovalTime(approvers)
};
}
async monitorPrivilegedSession(
sessionId: string,
userId: string
): Promise<void> {
const session = await this.getPrivilegedSession(sessionId);
// Real-time monitoring
const monitor = new PrivilegedSessionMonitor({
sessionId,
userId,
recordCommands: true,
recordScreenshots: true,
detectAnomalies: true,
alertThresholds: {
suspiciousCommands: 5,
dataExfiltrationSize: 100 * 1024 * 1024, // 100MB
unusualBehaviorScore: 0.8
}
});
monitor.on('suspicious_activity', async (activity) => {
await this.handleSuspiciousActivity(sessionId, activity);
});
monitor.on('policy_violation', async (violation) => {
await this.handlePolicyViolation(sessionId, violation);
});
monitor.on('session_timeout', async () => {
await this.terminatePrivilegedSession(sessionId);
});
await monitor.start();
}
}// Multi-layer encryption system
class DataProtectionService {
async encryptDocument(
document: Document,
encryptionPolicy: EncryptionPolicy
): Promise<EncryptedDocument> {
// Layer 1: Application-level encryption
const appEncrypted = await this.applicationEncrypt(
document.content,
encryptionPolicy.applicationKey
);
// Layer 2: Field-level encryption for sensitive data
const fieldEncrypted = await this.fieldLevelEncrypt(
appEncrypted,
document.sensitiveFields,
encryptionPolicy.fieldKeys
);
// Layer 3: Transport encryption (handled by TLS)
// Layer 4: Storage encryption (handled by storage provider)
// Generate encryption metadata
const metadata: EncryptionMetadata = {
algorithm: encryptionPolicy.algorithm,
keyVersion: encryptionPolicy.keyVersion,
encryptedAt: Date.now(),
encryptedBy: encryptionPolicy.userId,
integrityHash: await this.calculateIntegrityHash(fieldEncrypted)
};
return {
id: document.id,
encryptedContent: fieldEncrypted,
metadata,
accessControlList: await this.generateACL(document, encryptionPolicy)
};
}
async decryptDocument(
encryptedDocument: EncryptedDocument,
decryptionContext: DecryptionContext
): Promise<Document> {
// Verify access permissions
const accessAllowed = await this.verifyAccess(
decryptionContext.userId,
encryptedDocument.accessControlList
);
if (!accessAllowed) {
throw new UnauthorizedAccessError('Insufficient permissions to decrypt document');
}
// Verify integrity
const integrityValid = await this.verifyIntegrity(
encryptedDocument.encryptedContent,
encryptedDocument.metadata.integrityHash
);
if (!integrityValid) {
throw new IntegrityError('Document integrity verification failed');
}
// Decrypt field-level encryption
const fieldDecrypted = await this.fieldLevelDecrypt(
encryptedDocument.encryptedContent,
decryptionContext.fieldKeys
);
// Decrypt application-level encryption
const appDecrypted = await this.applicationDecrypt(
fieldDecrypted,
decryptionContext.applicationKey
);
// Log access for audit
await this.logDocumentAccess({
documentId: encryptedDocument.id,
userId: decryptionContext.userId,
accessType: 'decrypt',
timestamp: Date.now()
});
return {
id: encryptedDocument.id,
content: appDecrypted,
metadata: encryptedDocument.metadata
};
}
}// Enterprise Key Management Service
class KeyManagementService {
private hsm: HardwareSecurityModule;
private keyRotationSchedule: Map<string, RotationSchedule> = new Map();
async generateEncryptionKey(
keyType: KeyType,
keyPolicy: KeyPolicy
): Promise<EncryptionKey> {
// Generate key in HSM for hardware-backed security
const keyMaterial = await this.hsm.generateKey({
algorithm: keyPolicy.algorithm,
keySize: keyPolicy.keySize,
usage: keyPolicy.usage
});
const key: EncryptionKey = {
id: generateUUID(),
type: keyType,
algorithm: keyPolicy.algorithm,
keySize: keyPolicy.keySize,
createdAt: Date.now(),
createdBy: keyPolicy.createdBy,
version: 1,
status: 'active',
policy: keyPolicy,
hsmKeyId: keyMaterial.id
};
// Store key metadata (not the actual key material)
await this.storeKeyMetadata(key);
// Schedule automatic rotation
if (keyPolicy.autoRotate) {
this.scheduleKeyRotation(key.id, keyPolicy.rotationInterval);
}
// Log key generation
await this.auditLog({
action: 'key_generated',
keyId: key.id,
keyType,
createdBy: keyPolicy.createdBy
});
return key;
}
async rotateKey(keyId: string): Promise<EncryptionKey> {
const currentKey = await this.getKey(keyId);
if (!currentKey) {
throw new KeyNotFoundError(`Key ${keyId} not found`);
}
// Generate new key version
const newKeyMaterial = await this.hsm.generateKey({
algorithm: currentKey.algorithm,
keySize: currentKey.keySize,
usage: currentKey.policy.usage
});
const newKey: EncryptionKey = {
...currentKey,
version: currentKey.version + 1,
createdAt: Date.now(),
hsmKeyId: newKeyMaterial.id,
status: 'active'
};
// Mark old key as deprecated
await this.updateKeyStatus(currentKey.id, 'deprecated');
// Store new key
await this.storeKeyMetadata(newKey);
// Re-encrypt data with new key (background process)
await this.scheduleDataReEncryption(currentKey.id, newKey.id);
// Log key rotation
await this.auditLog({
action: 'key_rotated',
oldKeyId: currentKey.id,
newKeyId: newKey.id,
rotatedAt: Date.now()
});
return newKey;
}
async revokeKey(
keyId: string,
reason: string,
revokedBy: string
): Promise<void> {
const key = await this.getKey(keyId);
if (!key) {
throw new KeyNotFoundError(`Key ${keyId} not found`);
}
// Mark key as revoked
await this.updateKeyStatus(keyId, 'revoked');
// Destroy key material in HSM
await this.hsm.destroyKey(key.hsmKeyId);
// Notify all systems using this key
await this.notifyKeyRevocation(keyId);
// Log key revocation
await this.auditLog({
action: 'key_revoked',
keyId,
reason,
revokedBy,
revokedAt: Date.now()
});
}
}// Multi-jurisdiction compliance engine
class ComplianceEngine {
private regulations: Map<string, RegulationFramework> = new Map();
constructor() {
this.initializeRegulations();
}
private initializeRegulations(): void {
// GDPR (European Union)
this.regulations.set('GDPR', {
jurisdiction: 'EU',
requirements: {
dataMinimization: true,
consentManagement: true,
rightToErasure: true,
dataPortability: true,
privacyByDesign: true,
dataProtectionOfficer: true,
breachNotification: {
timeLimit: 72 * 60 * 60 * 1000, // 72 hours
authorities: ['supervisory_authority'],
dataSubjects: true
}
},
penalties: {
maximum: 0.04, // 4% of annual turnover
currency: 'EUR',
amount: 20000000 // €20 million
}
});
// HIPAA (United States Healthcare)
this.regulations.set('HIPAA', {
jurisdiction: 'US',
requirements: {
accessControls: true,
auditControls: true,
integrity: true,
personOrEntityAuthentication: true,
transmissionSecurity: true,
businessAssociateAgreements: true,
riskAssessment: {
frequency: 'annual',
scope: 'comprehensive'
}
},
penalties: {
tier1: { min: 100, max: 50000 },
tier2: { min: 1000, max: 100000 },
tier3: { min: 10000, max: 250000 },
tier4: { min: 25000, max: 1500000 }
}
});
// SOX (Sarbanes-Oxley Act)
this.regulations.set('SOX', {
jurisdiction: 'US',
requirements: {
internalControls: true,
financialReporting: true,
auditTrail: true,
segregationOfDuties: true,
changeManagement: true,
executiveCertification: true
}
});
}
async assessCompliance(
document: Document,
jurisdiction: string[]
): Promise<ComplianceAssessment> {
const assessments: RegulationAssessment[] = [];
for (const jurisdictionCode of jurisdiction) {
const regulation = this.regulations.get(jurisdictionCode);
if (!regulation) {
continue;
}
const assessment = await this.assessRegulation(document, regulation);
assessments.push({
regulation: jurisdictionCode,
compliant: assessment.compliant,
violations: assessment.violations,
recommendations: assessment.recommendations,
riskScore: assessment.riskScore
});
}
// Calculate overall compliance score
const overallScore = this.calculateOverallScore(assessments);
return {
documentId: document.id,
overallCompliant: overallScore >= 0.8,
overallScore,
assessments,
generatedAt: Date.now()
};
}
private async assessRegulation(
document: Document,
regulation: RegulationFramework
): Promise<DetailedAssessment> {
const violations: ComplianceViolation[] = [];
const recommendations: ComplianceRecommendation[] = [];
// Check data minimization (GDPR)
if (regulation.requirements.dataMinimization) {
const dataMinimizationResult = await this.checkDataMinimization(document);
if (!dataMinimizationResult.compliant) {
violations.push({
type: 'data_minimization',
severity: 'medium',
description: 'Document contains excessive personal data',
remediation: 'Remove unnecessary personal data fields'
});
}
}
// Check access controls (HIPAA)
if (regulation.requirements.accessControls) {
const accessControlResult = await this.checkAccessControls(document);
if (!accessControlResult.compliant) {
violations.push({
type: 'access_control',
severity: 'high',
description: 'Insufficient access controls',
remediation: 'Implement role-based access controls'
});
}
}
// Check audit trail (SOX)
if (regulation.requirements.auditTrail) {
const auditTrailResult = await this.checkAuditTrail(document);
if (!auditTrailResult.compliant) {
violations.push({
type: 'audit_trail',
severity: 'high',
description: 'Incomplete audit trail',
remediation: 'Enable comprehensive audit logging'
});
}
}
// Generate recommendations
if (violations.length > 0) {
recommendations.push({
priority: 'high',
description: 'Address compliance violations immediately',
actions: violations.map(v => v.remediation)
});
}
const riskScore = this.calculateRiskScore(violations);
return {
compliant: violations.length === 0,
violations,
recommendations,
riskScore
};
}
}// Advanced SIEM system for security monitoring
class SecurityMonitoringSystem {
private eventProcessors: Map<string, EventProcessor> = new Map();
private alertRules: AlertRule[] = [];
private incidentResponse: IncidentResponseSystem;
async processSecurityEvent(event: SecurityEvent): Promise<void> {
// Enrich event with contextual information
const enrichedEvent = await this.enrichEvent(event);
// Correlate with other events
const correlatedEvents = await this.correlateEvents(enrichedEvent);
// Apply detection rules
const detectionResults = await this.applyDetectionRules(
enrichedEvent,
correlatedEvents
);
// Generate alerts if necessary
for (const detection of detectionResults) {
if (detection.severity >= AlertSeverity.MEDIUM) {
await this.generateAlert(detection, enrichedEvent);
}
}
// Store event for analysis
await this.storeEvent(enrichedEvent);
}
private async applyDetectionRules(
event: EnrichedSecurityEvent,
correlatedEvents: SecurityEvent[]
): Promise<DetectionResult[]> {
const results: DetectionResult[] = [];
// Rule 1: Multiple failed login attempts
if (event.type === 'authentication_failed') {
const recentFailures = correlatedEvents.filter(
e => e.type === 'authentication_failed' &&
e.sourceIP === event.sourceIP &&
e.timestamp > Date.now() - (5 * 60 * 1000) // Last 5 minutes
);
if (recentFailures.length >= 5) {
results.push({
ruleId: 'brute_force_detection',
severity: AlertSeverity.HIGH,
description: 'Potential brute force attack detected',
indicators: {
sourceIP: event.sourceIP,
failureCount: recentFailures.length,
timeWindow: '5 minutes'
},
recommendedActions: [
'Block source IP',
'Notify security team',
'Review user account'
]
});
}
}
// Rule 2: Unusual data access patterns
if (event.type === 'document_access') {
const userBaseline = await this.getUserBaseline(event.userId);
const accessPattern = await this.analyzeAccessPattern(event, userBaseline);
if (accessPattern.anomalyScore > 0.8) {
results.push({
ruleId: 'unusual_access_pattern',
severity: AlertSeverity.MEDIUM,
description: 'Unusual document access pattern detected',
indicators: {
userId: event.userId,
anomalyScore: accessPattern.anomalyScore,
deviations: accessPattern.deviations
},
recommendedActions: [
'Review user activity',
'Verify user identity',
'Monitor subsequent actions'
]
});
}
}
// Rule 3: Privilege escalation attempts
if (event.type === 'privilege_escalation_attempt') {
results.push({
ruleId: 'privilege_escalation',
severity: AlertSeverity.CRITICAL,
description: 'Privilege escalation attempt detected',
indicators: {
userId: event.userId,
requestedPrivileges: event.metadata.requestedPrivileges,
currentPrivileges: event.metadata.currentPrivileges
},
recommendedActions: [
'Immediately review user account',
'Suspend user if necessary',
'Investigate potential compromise'
]
});
}
return results;
}
private async generateAlert(
detection: DetectionResult,
event: EnrichedSecurityEvent
): Promise<void> {
const alert: SecurityAlert = {
id: generateUUID(),
ruleId: detection.ruleId,
severity: detection.severity,
title: detection.description,
description: this.formatAlertDescription(detection, event),
indicators: detection.indicators,
recommendedActions: detection.recommendedActions,
createdAt: Date.now(),
status: 'open',
assignedTo: await this.getAlertAssignee(detection.severity)
};
// Store alert
await this.storeAlert(alert);
// Notify security team
await this.notifySecurityTeam(alert);
// Auto-remediate if configured
if (detection.severity === AlertSeverity.CRITICAL) {
await this.initiateAutoRemediation(alert, event);
}
}
}// Automated incident response system
class IncidentResponseSystem {
private playbooks: Map<string, ResponsePlaybook> = new Map();
private activeIncidents: Map<string, SecurityIncident> = new Map();
async handleSecurityIncident(
alert: SecurityAlert,
event: SecurityEvent
): Promise<IncidentResponse> {
// Create security incident
const incident: SecurityIncident = {
id: generateUUID(),
alertId: alert.id,
type: this.classifyIncident(alert, event),
severity: alert.severity,
status: 'investigating',
createdAt: Date.now(),
affectedSystems: await this.identifyAffectedSystems(event),
timeline: [{
timestamp: Date.now(),
action: 'incident_created',
description: 'Security incident created from alert',
actor: 'system'
}]
};
// Get appropriate response playbook
const playbook = this.getResponsePlaybook(incident.type);
if (!playbook) {
throw new Error(`No playbook found for incident type: ${incident.type}`);
}
// Execute response playbook
const response = await this.executePlaybook(incident, playbook);
// Store incident
this.activeIncidents.set(incident.id, incident);
return response;
}
private async executePlaybook(
incident: SecurityIncident,
playbook: ResponsePlaybook
): Promise<IncidentResponse> {
const executedActions: ResponseAction[] = [];
for (const step of playbook.steps) {
try {
const actionResult = await this.executeResponseAction(
incident,
step.action
);
executedActions.push({
...step.action,
result: actionResult,
executedAt: Date.now()
});
// Update incident timeline
incident.timeline.push({
timestamp: Date.now(),
action: step.action.type,
description: step.action.description,
actor: 'system',
result: actionResult.success ? 'success' : 'failed'
});
// Check if step requires human intervention
if (step.requiresApproval && !actionResult.success) {
await this.requestHumanIntervention(incident, step);
break;
}
} catch (error) {
executedActions.push({
...step.action,
result: {
success: false,
error: error.message
},
executedAt: Date.now()
});
// Escalate on critical failures
if (step.action.critical) {
await this.escalateIncident(incident, error);
}
}
}
return {
incidentId: incident.id,
playbookId: playbook.id,
executedActions,
status: this.calculateResponseStatus(executedActions),
nextSteps: await this.determineNextSteps(incident, executedActions)
};
}
private async executeResponseAction(
incident: SecurityIncident,
action: ResponseActionDefinition
): Promise<ActionResult> {
switch (action.type) {
case 'isolate_user':
return await this.isolateUser(action.parameters.userId);
case 'block_ip':
return await this.blockIPAddress(action.parameters.ipAddress);
case 'revoke_tokens':
return await this.revokeUserTokens(action.parameters.userId);
case 'quarantine_document':
return await this.quarantineDocument(action.parameters.documentId);
case 'notify_stakeholders':
return await this.notifyStakeholders(
action.parameters.stakeholders,
incident
);
case 'collect_evidence':
return await this.collectEvidence(
incident,
action.parameters.evidenceTypes
);
default:
throw new Error(`Unknown response action type: ${action.type}`);
}
}
}// Security metrics and KPI tracking
class SecurityMetricsCollector {
async generateSecurityDashboard(): Promise<SecurityDashboard> {
const timeRange = {
start: Date.now() - (30 * 24 * 60 * 60 * 1000), // Last 30 days
end: Date.now()
};
return {
overview: {
totalSecurityEvents: await this.getTotalSecurityEvents(timeRange),
criticalAlerts: await this.getCriticalAlerts(timeRange),
activeIncidents: await this.getActiveIncidents(),
meanTimeToDetection: await this.getMeanTimeToDetection(timeRange),
meanTimeToResponse: await this.getMeanTimeToResponse(timeRange),
securityScore: await this.calculateSecurityScore()
},
threatLandscape: {
topThreats: await this.getTopThreats(timeRange),
attackVectors: await this.getAttackVectors(timeRange),
geographicDistribution: await this.getGeographicThreatDistribution(timeRange),
trendAnalysis: await this.getThreatTrends(timeRange)
},
complianceStatus: {
overallCompliance: await this.getOverallComplianceScore(),
regulationCompliance: await this.getRegulationComplianceBreakdown(),
complianceViolations: await this.getComplianceViolations(timeRange),
auditReadiness: await this.getAuditReadinessScore()
},
accessManagement: {
privilegedAccessSessions: await this.getPrivilegedAccessMetrics(timeRange),
accessViolations: await this.getAccessViolations(timeRange),
identityRiskScore: await this.getIdentityRiskScore(),
unusualAccessPatterns: await this.getUnusualAccessPatterns(timeRange)
},
dataProtection: {
encryptionCoverage: await this.getEncryptionCoverage(),
dataLeakageIncidents: await this.getDataLeakageIncidents(timeRange),
keyRotationStatus: await this.getKeyRotationStatus(),
dataClassificationCoverage: await this.getDataClassificationCoverage()
}
};
}
private async calculateSecurityScore(): Promise<SecurityScore> {
const factors = {
threatDetection: await this.getThreatDetectionScore(),
incidentResponse: await this.getIncidentResponseScore(),
compliance: await this.getComplianceScore(),
accessControl: await this.getAccessControlScore(),
dataProtection: await this.getDataProtectionScore(),
vulnerabilityManagement: await this.getVulnerabilityScore()
};
// Weighted average calculation
const weights = {
threatDetection: 0.2,
incidentResponse: 0.2,
compliance: 0.2,
accessControl: 0.15,
dataProtection: 0.15,
vulnerabilityManagement: 0.1
};
const overallScore = Object.entries(factors).reduce(
(total, [factor, score]) => total + (score * weights[factor]),
0
);
return {
overall: Math.round(overallScore * 100),
factors,
trend: await this.getSecurityScoreTrend(),
recommendations: await this.getSecurityRecommendations(factors)
};
}
}SealGuard's enterprise security architecture provides:
- Comprehensive Threat Protection: Multi-layered defense against STRIDE threats
- Zero Trust Implementation: Never trust, always verify approach
- Advanced Access Control: Dynamic, risk-based access decisions
- Data Protection: Multi-layer encryption with enterprise key management
- Compliance Automation: Multi-jurisdiction regulatory compliance
- Intelligent Monitoring: AI-powered threat detection and response
- Incident Response: Automated playbook-driven response system
- Continuous Improvement: Metrics-driven security optimization
This architecture addresses enterprise security requirements while maintaining the benefits of Web3 infrastructure, providing a robust foundation for regulated industries to adopt decentralized document compliance solutions.