Executive Summary

Document Management Systems have become high-value targets for cyberattacks because they concentrate an organization's most sensitive information in a single platform: contracts, financial records, personal data of employees and citizens, legal documents, and trade secrets. A breach of a DMS is not an IT incident — it is an organizational crisis with legal, regulatory, and reputational dimensions.

This whitepaper presents Sarthi DMS's comprehensive security architecture, benchmarked against CERT-In guidelines, ISO 27001:2022, NIST Cybersecurity Framework, and Indian data protection requirements. Security is not a feature in Sarthi DMS — it is the foundational design principle.

Chapter 1: The DMS Threat Landscape

1.1 Primary Threat Vectors

DMS platforms face threats across four primary vectors. External attacks include ransomware targeting document storage repositories (up 187% in India, 2023-2025), credential stuffing attacks against web-accessible DMS portals, SQL injection and API vulnerabilities in older DMS platforms, and supply chain attacks targeting DMS vendor software updates. Insider threats include unauthorized bulk document downloads by employees (estimated 60% of all data theft incidents), accidental exposure through misconfigured access permissions, and malicious document exfiltration prior to employee departure. Physical threats include unauthorized access to scanning hardware containing buffered document data. Regulatory threats include non-compliance penalties under DPDP Act 2023 ranging from ₹50 crore to ₹250 crore for significant breaches.

1.2 Incident Statistics for Indian DMS

Threat Type	Frequency (India 2024)	Average Impact	Recovery Time
Ransomware (DMS targeted)	2,800+ incidents	₹3.2 Cr average	18-42 days
Insider data theft	1,400+ incidents	₹1.8 Cr average	Unknown (often unreported)
Credential compromise	4,100+ incidents	₹0.8 Cr average	7-21 days
Misconfigured cloud storage	890+ incidents	₹2.1 Cr average	1-14 days
API exploitation	560+ incidents	₹4.6 Cr average	21-60 days

Chapter 2: Encryption Architecture

2.1 Data at Rest Encryption

All documents stored in Sarthi DMS are encrypted using AES-256 (Advanced Encryption Standard with 256-bit keys), the same standard used by Indian government classified systems and financial institutions. Encryption is applied at the file system level (encrypting the entire storage volume), at the document level (individual document-level encryption with unique keys per document class), and at the field level for sensitive metadata elements (PAN numbers, Aadhaar numbers, financial account details).

Encryption key management follows a hierarchical key structure: Master Key (Hardware Security Module protected) → Document Class Keys (rotated quarterly) → Document Instance Keys (unique per document). This architecture ensures that even if a storage volume is physically compromised, individual documents remain protected. Keys are never stored alongside the encrypted data.

2.2 Data in Transit Encryption

All network communication uses TLS 1.3 (the current gold standard), with older TLS 1.0/1.1 versions disabled. Certificate management uses mutual TLS (mTLS) for service-to-service communication within the DMS infrastructure, and standard TLS with HSTS (HTTP Strict Transport Security) for browser-based access. API endpoints enforce certificate pinning for registered client applications.

Chapter 3: Access Control Architecture

3.1 Role-Based Access Control (RBAC)

Sarthi DMS implements a four-tier RBAC model: System Administrator (full platform access, configuration, user management), Department Administrator (user management and configuration within department scope), Document Manager (upload, modify, delete, approve documents within assigned categories), and Document Viewer (read-only access to assigned document categories). All roles are configurable and can be combined with attribute-based restrictions (e.g., "view government contracts created after 2020 originating from Maharashtra procurement department").

3.2 Attribute-Based Access Control (ABAC)

Beyond roles, ABAC policies enforce contextual access restrictions: time-based restrictions (documents accessible only during office hours from office networks), location-based restrictions (sensitive documents accessible only from within specific IP ranges or geographic regions), classification-based restrictions (secret/confidential documents require additional authentication factor), and workflow-state restrictions (draft documents accessible only to creators and designated reviewers until approved).

3.3 Privileged Access Management

System administrators with elevated access are subject to: just-in-time (JIT) privilege elevation (admin rights granted for specific sessions, not permanently), privileged session recording (all admin actions are logged with screen recording capability), dual-person integrity for destructive operations (document deletion requires two-admin approval), and quarterly access reviews where all elevated permissions are revalidated.

Access Control Feature	Sarthi DMS	Industry Standard
Multi-Factor Authentication	✓ (OTP, TOTP, biometric)	Often optional
Single Sign-On (SSO)	✓ (SAML 2.0, OAuth 2.0)	Common
Attribute-Based Access	✓ (full ABAC engine)	Rare in Indian DMS
JIT Privilege Elevation	✓	Rare
Dual-Approval for Deletion	✓	Rare
Session Timeout	✓ Configurable (5-60 min)	Common

Chapter 4: Audit Logging & Monitoring

4.1 Comprehensive Audit Trail

Every action in Sarthi DMS generates an immutable audit log entry capturing: who (user ID, role, IP address, device fingerprint), what (action type, document ID, field-level changes, search queries), when (UTC timestamp and IST timestamp with millisecond precision), where (geographic location, network segment, access channel), and outcome (success, failure, denial, reason). Audit logs cannot be modified or deleted by any user including system administrators — audit log integrity is enforced through cryptographic chaining (each log entry includes a hash of the previous entry).

4.2 Real-Time Security Monitoring

Sarthi DMS includes a SIEM integration module that streams security events to the organization's preferred monitoring platform (Splunk, IBM QRadar, Microsoft Sentinel, or Sarthi DMS's built-in monitoring dashboard). Automated alerts trigger for: mass download attempts (>50 documents in 60 seconds by a single user), after-hours access to restricted classification documents, failed authentication spikes (>10 failed logins in 5 minutes for a single account), and privilege escalation events.

Chapter 5: Zero-Trust Architecture

Sarthi DMS implements zero-trust principles: never trust, always verify. Every access request is independently authenticated regardless of network location (no "once inside the firewall" trust). The zero-trust model comprises: Identity verification (MFA for every session, not just initial login), Device verification (registered device certificates, compliance posture check), Network microsegmentation (DMS services isolated in separate network segments with explicit access allowlisting), and Least-privilege access (users receive minimum access needed for their current task, with elevation required for sensitive operations).

Chapter 6: Indian Regulatory Compliance

Regulation	Key Requirement	Sarthi DMS Controls
IT Act 2000 / Amended 2008	Section 43A reasonable security practices	ISO 27001 alignment, CERT-In compliance
DPDP Act 2023	Data localization, consent, purpose limitation, erasure	On-premise deployment option, consent workflows, right-to-erasure automation
CERT-In Guidelines 2022	72-hour incident reporting, log retention 180 days	SIEM integration, 365-day log retention
ISO 27001:2022	ISMS framework, risk treatment, continual improvement	Sarthi DMS is ISO 27001 certified
RBI DMS Guidelines (Banks)	Audit trail, encryption, data classification	Bank-grade audit trails, AES-256, 5-tier data classification
SEBI Records Guidelines	7-year retention, tamper-proof storage	Immutable storage, automated retention schedules