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A neighboring Wi‑Fi, a handful of stolen credentials, and a quiet leap into a high‑value network—the kind of pivot that sounds cinematic until you realize how practical it is. We unpack that playbook and turn it into concrete defenses you can deploy across your environment, from client endpoints and browsers to databases, servers, and industrial control systems.

We start at the edge, where phishing, drive‑by downloads, and man‑in‑the‑middle still win far too often. You’ll get a clear blueprint for upgrading endpoint security with EDR, strict patching, and browser hardening, plus when to retire or sandbox legacy applets and how to stop sensitive data bleeding from local caches. From there we map the landscape of modern data platforms: the internal, conceptual, and external layers of databases; the resilience of distributed DBs; the interoperability and pitfalls of ODBC; and the security tradeoffs between NoSQL flexibility and relational ACID guarantees. Expect practical guardrails like TLS on every link, parameterized queries for SQLi defense, and role‑based access with tight segregation of duties.

Finally, we focus on servers and ICS, where downtime costs real money and, in OT, can impact safety. Learn how to prioritize hardening and patching without breaking legacy apps, isolate critical services to reduce blast radius, centralize logging to a SIEM, and apply the Purdue model to segment OT from IT. We share tested moves for OT environments—firewalls and DMZs, constrained remote access, realistic backup and recovery plans—and explain how to integrate safety and cybersecurity so alarms, procedures, and people work as one.

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