SCADA System Security Assessment & Hardening

Comprehensive security assessment and hardening of SCADA systems, HMI interfaces, and industrial control networks. From Siemens to Schneider, we secure the systems that run your operations.

### Securing the Systems That Control Critical Operations

 

SCADA (Supervisory Control and Data Acquisition) systems are the nervous system of critical infrastructure -

controlling power grids, water treatment, manufacturing, and more. Unlike IT systems that can be taken offline

for patching, SCADA systems run 24/7/365, often for decades. We assess and harden these systems without

disrupting operations.

 

### What We Assess

 

**SCADA Platforms**

- Siemens WinCC & PCS 7

- Schneider Electric EcoStruxure & Wonderware

- GE iFIX & CIMPLICITY

- Rockwell FactoryTalk

- ABB System 800xA

- Honeywell Experion

- Emerson DeltaV

 

**Components We Secure**

- Master Terminal Units (MTUs)

- Human-Machine Interfaces (HMIs)

- Engineering Workstations

- Historians and data servers

- OPC servers and communication gateways

- Remote access infrastructure

- SCADA network architecture

 

**Communication Protocols**

- Modbus (TCP/RTU)

- DNP3 (Distributed Network Protocol)

- OPC (Classic & UA)

- IEC 60870-5-104

- Profinet & Profibus

- EtherNet/IP

- BACnet (building automation)

 

### Our Assessment Methodology

 

**Phase 1: Passive Discovery & Mapping (No Disruption)**

- Network traffic analysis and baseline

- Asset inventory and topology mapping

- Protocol identification and flow analysis

- Identify insecure communications

- Document legacy systems and constraints

 

**Phase 2: Configuration Review**

- SCADA server hardening assessment

- Operating system security review

- Database security (SQL Server, Oracle)

- User account and privilege analysis

- Authentication mechanisms

- Patch management review

- Backup and recovery validation

 

**Phase 3: HMI & Application Security**

- HMI application security review

- Hardcoded credentials discovery

- Access control effectiveness

- Session management

- Logging and audit capabilities

- Screen/display security

 

**Phase 4: Network Security Architecture**

- Network segmentation validation

- Firewall rules and effectiveness

- DMZ architecture review

- Remote access security

- VPN configuration and security

- Industrial DMZ (IDMZ) design

 

**Phase 5: Protocol Security Testing**

- Protocol manipulation testing

- Authentication bypass attempts

- Command injection testing

- Man-in-the-middle vulnerabilities

- Replay attack susceptibility

- Protocol fuzzing (controlled)

 

### Hardening Services

 

After assessment, we provide comprehensive hardening:

 

**System Hardening**

- Windows/Linux OS hardening for SCADA servers

- Service minimization and disabling unused features

- Security policy implementation

- Antivirus/endpoint protection deployment (OT-appropriate)

- Application whitelisting

- Secure baseline configurations

 

**Network Hardening**

- Network segmentation implementation

- Firewall rule optimization

- Industrial DMZ deployment

- VPN hardening for remote access

- Intrusion detection system (IDS) deployment

- Network access control (NAC)

 

**Access Control Hardening**

- Multi-factor authentication (MFA) implementation

- Role-based access control (RBAC)

- Privileged access management (PAM)

- Strong password policies

- Account lockout and monitoring

- Session timeout configuration

 

**Communication Security**

- Encryption implementation where possible

- Secure protocol migration (e.g., Modbus TCP to Modbus Secure)

- Certificate management

- VPN for remote sites

- Secure OPC UA deployment

 

**Monitoring & Detection**

- Security Information and Event Management (SIEM) integration

- Anomaly detection deployment

- Industrial protocol monitoring

- Asset change detection

- Continuous monitoring strategy

 

### Compliance Alignment

 

Our assessments support:

- **IEC 62443** - Industrial automation security

- **NERC-CIP** - North American grid security

- **NIS2 Directive** - EU critical infrastructure

- **ISO 27001/27019** - Information security for industrial control systems

- **NIST 800-82** - Guide to Industrial Control Systems Security

 

### Vendor-Specific Expertise

 

We have deep experience with:

- Siemens SIMATIC & TIA Portal security

- Schneider Electric Modicon & EcoStruxure hardening

- Rockwell Automation ControlLogix & FactoryTalk

- GE Digital SCADA platforms

- ABB control systems

- Honeywell Experion & Safety Manager

 

### Deliverables

 

- Comprehensive security assessment report

- Vulnerability findings with risk ratings (CVSS)

- Network diagrams and data flow maps

- Hardening recommendations prioritized by risk

- Step-by-step remediation guide

- Secure configuration templates

- Compensating controls for unpatchable systems

- Re-assessment after hardening implementation

- Executive summary for management

 

### Deployment Approach

 

**Non-Disruptive Testing**

- All testing coordinated with operations

- Passive monitoring prioritized over active scanning

- Testing during maintenance windows where needed

- Immediate rollback procedures if issues detected

- 24/7 availability during critical phases

 

**Phased Implementation**

- Hardening deployed incrementally

- Full testing after each phase

- Rollback plan for every change

- Documentation and knowledge transfer

- Training for operations and maintenance teams

 

### Ideal For

 

- Power generation and transmission operators

- Water and wastewater treatment facilities

- Oil & gas production and refining

- Chemical and petrochemical plants

- Manufacturing and discrete automation

- Building automation and smart buildings

- Transportation infrastructure

- Critical infrastructure under NIS2 Directive

 

### Why Choose MottaSec

 

**Operational Awareness**

We understand that SCADA systems cannot be "patched and rebooted." Our methodologies are built around

operational continuity-testing and hardening without disruption.

 

**Vendor-Agnostic Expertise**

From Siemens to Schneider to Rockwell, we've secured SCADA systems across all major vendors and

understand their unique security challenges and capabilities.

 

**Compliance-Driven**

Every finding is mapped to relevant standards (IEC 62443, NERC-CIP, NIS2) so you know exactly

how remediation supports your compliance objectives.

 

**Duration:** 4-12 weeks (depending on system complexity and sites) 

**Pricing:** Based on number of systems, sites, and assessment depth 

**Note:** Can work in operational environments with appropriate safety briefings