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Process safety and Industrial Control Systems (ICS) cybersecurity are deeply interconnected. Ignoring one can lead to catastrophic failures in industrial environments. Sinclair Koelemij emphasizes that safety systems must be secure, and cybersecurity measures must account for operational safety.
You Should Know:
Key Commands & Tools for ICS Security & Process Safety
1. Nmap for ICS Network Scanning
nmap -sT -Pn -p 1-1024 --script=modbus-discover <target_IP>
Scans for open Modbus ports, commonly used in ICS.
2. PLC Memory Dump with Metasploit
use auxiliary/scanner/scada/modbus_findunitid set RHOSTS <target_IP> run
Identifies connected PLCs and extracts memory data.
3. Wireshark ICS Traffic Analysis
wireshark -k -i eth0 -Y "modbus || dnp3 || ethercat"
Filters ICS-specific protocols for deep packet inspection.
4. Securing Linux-based ICS Workstations
sudo apt install ufw sudo ufw enable sudo ufw deny 502/tcp Block Modbus if unused
5. Windows ICS Hardening (PowerShell)
Set-NetFirewallRule -DisplayName "Modbus TCP" -Enabled False Disable-WindowsOptionalFeature -Online -FeatureName "SMB1Protocol"
6. Detecting Anomalies with Python
import pyshark
capture = pyshark.LiveCapture(interface='eth0', display_filter='modbus')
for packet in capture.sniff_continuously():
if int(packet.modbus.func_code) > 20:
print("Suspicious MODBUS function code detected!")
7. Logging ICS Events in Linux
sudo journalctl -f -u scada-service
Monitors SCADA service logs in real-time.
What Undercode Say:
Industrial systems require a security-first approach integrated with safety protocols. Legacy ICS devices often lack encryption, making them vulnerable to Man-in-the-Middle (MITM) attacks. Always:
– Segment OT networks from IT.
– Monitor ICS traffic for unusual patterns.
– Apply firmware updates cautiously (test offline first).
– Use YARA rules to detect malware targeting PLCs.
Expected Output:
A hardened ICS environment with continuous monitoring, secure PLC configurations, and minimized attack surfaces.
For further reading, check:
References:
Reported By: Demeyerdavy Industrial – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
