Rakesh Kumar

USB and mobile media is often the biggest contributor to threats. it is vastly documented when it comes to cyber security risk assessment yet it is still a common sight that usb ports are left alone sometimes unattended and there is not automatic mechanism to protect them it is essential to have a mechanism that only trusted, authorized and fully scanned usb devices are connected to the hosts Processes like scanning before connecting and proactive agents on hosts which ensure only scanned media is connected are extremely critical and necessary #usb #hacking #data #malware

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The 5 Unbreakable Rules of OT Security !! What are your non-negotiable OT Cybersecurity Rules? When it comes to securing industrial environments, these principles are non-negotiable: 1️⃣ Visibility First You can’t protect what you can’t see. Build a complete and accurate asset inventory. 2️⃣ Safety is Paramount Cybersecurity must never compromise physical safety. Always assess the impact. 3️⃣ OT ≠ IT Don’t blindly apply IT tools to OT. It’s a different world with different priorities. 4️⃣ Secure the Network With limited endpoint security, the network becomes the battleground. Segment, monitor, control. 5️⃣ Change = Risk Even small changes can cause big problems. Manage and test every modification thoroughly. OT Security isn’t about buzzwords. It’s about doing the basics—right. 👉 Follow Shiv Kataria and OT Security Huddle for more practical insights. Reshare to hep others learn. #OTSecurity #ICS #Cybersecurity #IndustrialCyber #CriticalInfrastructure #CyberAwareness #SecurityFirst #OTNotIT

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🏭 ICS/OT systems power the world — but they also introduce unique cybersecurity challenges. From power plants to manufacturing lines, securing operational technology requires specialized skills and hands-on practice. The ICS/OT Cyber Security Lab Manual is a practical, exercise-driven guide that covers: 🔹 Setting up lab environments with VMware, Python, and PIP 🔹 Understanding ICS/OT protocols (Modbus, S7, OPC, OPC UA) through Wireshark traffic analysis 🔹 Building secure architectures with the Purdue Model & IT/OT DMZs 🔹 Creating asset inventories and registers from configs & packet captures 🔹 Conducting vulnerability scans with Nmap & Nessus in ICS contexts 🔹 Applying OSINT techniques (Google, WHOIS, Shodan, LinkedIn) to industrial systems 🔹 Incident detection & response exercises, including Dragos’ Backdoors & Breaches deck Whether you’re a student, SOC analyst, or OT engineer, this manual bridges the gap between IT security and the industrial world with step-by-step labs and real-world relevance. 👉 Read the manual and start your ICS/OT security journey today. #ics #ot #criticalinfrastructure #cybersecurity #industrialsecurity #soc #copiedpost

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OT Asset Management under NIST 1800-23 >> NIST 1800-23: Energy Sector Asset Management (ESAM) delivers a blueprint for visibility, control, and resilience across electric utilities, oil & gas, and other critical infrastructure sectors. >>> This project addresses the following characteristics of asset management: > Asset Discovery: establishment of a full baseline of physical and logical locations of assets > Asset Identification: capture of asset attributes, such as manufacturer, model, OS, IP addresses, MAC addresses, protocols, patch-level information, and firmware versions > Asset Visibility: continuous identification of newly connected or disconnected devices and IP and serial connections to other devices > Asset Disposition: the level of criticality (high, medium, or low) of a particular asset, its relation to other assets within the OT network, and its communication with other devices > Alerting Capabilities: detection of a deviation from the expected operation of assets >>> A standardized architecture allows organizations to replicate deployments across sites while tailoring to local needs, ensuring both scalability and security. > At each remote site, control systems generate raw ICS data and protocol traffic (Modbus, DNP3, EtherNet/IP), which is collected by local data servers. > These servers act as the secure bridge, encapsulating serial traffic and transmitting structured data through VPN tunnels back to the enterprise. > Once in the enterprise environment, asset management tools aggregate inputs from multiple sites, giving analysts a single source of truth. > Events and asset health indicators are displayed on centralized dashboards, enabling timely detection of anomalies, vulnerabilities, or misconfigurations. > Importantly, remote management is limited only to the data servers, ensuring that core control systems remain shielded from unnecessary exposure. >>> Here’s a 10-point summary of the ESAM reference design asset management system: > Data Collection – Gathers raw packet captures and structured data from OT networks. > Remote Configuration – Allows secure management and policy-driven data ingestion. > Data Aggregation – Centralizes collected data for further processing. > Monitoring – Continuously observes network activity for anomalies. > Discovery – Detects new devices when new IP/MAC addresses appear. > Data Analysis – Normalizes multi-site traffic into one view and establishes baselines of normal behavior. > Device Recognition – Identifies devices via MAC addresses or deep packet inspection (model/serial). > Device Classification – Assigns criticality levels automatically or manually. > Data Visualization – Displays collected and analyzed information in a centralized dashboard. > Alerting & Reporting – Notifies analysts of abnormal events and generates reports, including patch availability. #icssecurity #OTsecurity

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🔐 Cybersecurity in OT starts with visibility. If you don’t know your vulnerabilities, you can’t protect against them. In the past, we had to: 🧾 Subscribe to newsletters, 📡 Check RSS feeds, 🌐 Search vendor websites manually. ➡️ Now it’s easier thanks to the CSAF format (Common Security Advisory Framework)! Vendors publish vulnerabilities in a standardized and machine-readable way. 📥 Tools like Siemens SINEC Security Guard can automatically ingest and analyze these reports. That’s how you keep track of vulnerabilities in OT environments! 💬 What tools do you use to manage vulnerabilities in your OT systems? #OTSecurity #CSAF #IEC62443 #IndustrialCybersecurity #SINECSecurityGuard

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Here’s a quick look comparison between OT Security and IT Security for your LinkedIn post: Primary Focus: OT Security focuses on safety, system uptime, and reliable process control, while IT Security prioritizes data confidentiality, integrity, and availability. Main Goal: OT Security aims to ensure continuous operation of industrial processes, whereas IT Security’s goal is to protect data and digital assets from breaches. Systems Protected: OT Security covers SCADA, PLCs, DCS, sensors, actuators, and HMIs. IT Security protects servers, PCs, databases, and applications. Downtime Impact: OT downtime can lead to physical damage, safety hazards, and production loss. IT downtime typically results in data loss, financial loss, and reputational damage. Update/Patch Cycle: OT systems have infrequent updates that are heavily tested to avoid disruptions. IT systems undergo regular and frequent updates to quickly fix vulnerabilities. Threat Landscape: OT faces threats like physical sabotage, malware targeting ICS, and insider threats. IT faces malware, ransomware, phishing, and data breaches. Network Priority: OT networks require deterministic communication with low latency, prioritizing availability over security. IT networks emphasize scalability, flexibility, and strong security controls. Common Standards: OT security follows standards such as IEC 62443, NERC CIP, and NIST SP 800-82. IT security uses ISO 27001, NIST CSF, GDPR, and PCI-DSS. Connectivity: OT networks are often isolated or air-gapped but are increasingly integrated with IT. IT networks are internet-connected and cloud-enabled. Security Approach: Both adopt defense-in-depth strategies, but OT emphasizes strict access control and monitoring of industrial protocols, while IT focuses on firewalls, endpoint protection, and encryption. #ITSecurity #Cybersecurity #InformationTechnology #DataProtection #NetworkSecurity #CloudSecurity #ITCompliance #ITGovernance #ITInfrastructure #DigitalTransformation #OTSecurity #OperationalTechnology #ICS #SCADA #IndustrialSecurity #OTNetwork #CriticalInfrastructure #IndustrialControlSystems #CyberPhysicalSystems #OTCybersecurity

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