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OTA Updates & Device Lifecycle: How Real IoT Products Stay Alive Long After They Leave the Factory
If you’ve ever deployed an IoT product in the real world — not a prototype, not a dev kit, but a real commercial device installed inside walls, mounted on poles, stuck inside machines, or screwed into ceilings — you know the feeling. The moment the device leaves your lab, a clock starts ticking. Something will change. Something will drift. Something will need updating. Maybe it’s a bug you didn’t notice. Maybe it’s a sensor offset you couldn’t predict. Maybe it’s a machine-le
Srihari Maddula
7 hours ago6 min read


Quantum-Safe IoT: The Hard Truth About Bringing Quantum-Safe Security to Tiny Devices
There’s a strange tension you feel the first time someone asks,“Can our IoT product be quantum-safe?” On one hand, it sounds like a marketing question.A buzzword tossed around by people who haven’t spent a day in firmware development.Quantum computers, cryptanalysis, lattice problems — these things feel oceans away from a microcontroller that’s struggling to fit a LoRaWAN stack and a couple of timers. But on the other hand, something deeper kicks in — a quiet awareness that t
Srihari Maddula
7 hours ago6 min read


Zero-Trust IoT: The Quiet Discipline That Keeps Edge Devices Safe Long After You Stop Thinking About Them
A EurthTech Deep Technical Narrative There is a moment, early in every IoT project, when the product feels invincible.The firmware boots.The radio connects.The device sends its first packets.You see the structured JSON in the cloud, and it feels beautiful — clean, orderly, obedient. And then one day, someone asks the question you’ve been avoiding: “What happens if someone tries to break it?” At first, you think about obvious things.Someone sniffing the radio packets.Someone r
Srihari Maddula
7 hours ago5 min read


"We Added a Secure Element, So We're Secure Now" Is Not How the SE050 Actually Works
A hardware secure element like NXP's EdgeLock SE050 shows up on a BOM, and the assumption that follows — sometimes unstated, sometimes stated directly in a client conversation — is that the product is now meaningfully more secure, full stop. That's not wrong exactly, but it's dangerously incomplete. A secure element protects a specific, narrow set of things extremely well, and does nothing at all for a much larger set of things a product's overall security posture also depend
Srihari Maddula
1 day ago5 min read


Satellite IoT for Remote Asset Monitoring: Designing a Secure Message Protocol Over Iridium SBD
A remote industrial site — far enough from any cellular tower or LoRaWAN gateway coverage that terrestrial connectivity simply isn't an option — still needs its sensor data to reach a central monitoring location, reliably and securely. Satellite communication is the obvious answer to the reachability problem and a genuinely non-obvious engineering problem once security and cost enter the picture, because satellite airtime is expensive per byte in a way terrestrial connectivit
Srihari Maddula
Aug 238 min read


Reverse Engineering Firmware: Is Your Code Safe from Hackers?
Reading Time: 25 mins Topic: Embedded AI Bridging the gap between academic projects and industry reality. 1. The Hook: The Illusion of Compiled Safety There is a dangerous myth that persists in the embedded systems industry: “Once the C code is compiled into a binary and flashed onto the microcontroller, our intellectual property is safe.” Nothing could be further from the truth. Every day, competitors, security researchers, and malicious actors are ripping firmware straight
Srihari Maddula
Mar 156 min read


Security in IoT: It’s Not Just SSL/TLS
Author: Srihari Maddula Reading Time: 18 mins True security is built into the silicon itself. Photo by Unsplash. In many university courses and online tutorials, "IoT Security" is often reduced to a single checkbox: SSL/TLS. Students are taught that as long as their data is encrypted "in flight" (from the device to the server), the system is secure. If you use HTTPS or MQTTS with a certificate, you’re good to go. But here is the industry reality: Network encryption is the bar
Srihari Maddula
Mar 14 min read


Why Encryption Alone Does Not Secure IoT Devices
Srihari Maddula Encryption is usually the first security decision made in an IoT system. Sometimes it is also the last. Data is encrypted in transit, keys are provisioned, certificates are installed, and a sense of closure follows. The system appears secure because the most visible part of security has been addressed. In real deployments, this confidence rarely survives long. Not because encryption fails, but because it is expected to solve problems that exist outside its sco
Srihari Maddula
Feb 224 min read


Why Secure IoT Is Not About Encryption Alone
In most IoT discussions, security is reduced to a checklist. Use TLS. Encrypt data. Protect keys. Rotate certificates. These measures are important, but they address only one layer of the problem. They protect data in transit and at rest. They do not guarantee that the data itself is meaningful, trustworthy, or grounded in physical reality. As IoT systems move deeper into infrastructure, automation, healthcare, energy, and safety-critical domains, this distinction becomes dan
Srihari Maddula
Feb 74 min read


When “Secure Hardware” Isn’t Secure:
How Open Hardware Security Labs Are Making Embedded Products Stronger In 2025, even a ₹500 IoT gadget carries Wi-Fi, Bluetooth, OTA updates, and a microcontroller running “secure” firmware. But here’s the uncomfortable truth: Most devices look secure on paper but collapse the moment someone attacks the hardware directly. It doesn’t take a nation-state attacker — just a motivated engineer with curiosity and the right tools. Examples? A 200-nanosecond voltage glitch bypassing a
Srihari Maddula
Nov 18, 20254 min read


Unlocking the Potential of Embedded Systems
Embedded systems programming is the backbone of modern technology, powering everything from smart appliances to industrial automation. As businesses increasingly rely on connected devices and intelligent systems, understanding how to harness embedded systems becomes critical. I will guide you through the essential aspects of embedded systems programming, highlighting practical strategies and technical insights that can transform complex ideas into reliable, secure, and scalab
Srihari Maddula
Nov 3, 20254 min read


Understanding Side-Channel Attacks in Embedded Systems
When we think of embedded system security, our minds often jump to encryption protocols, secure bootloaders, or tamper detection. But what if your device is leaking secrets—not through software, but through electricity, timing, or electromagnetic noise? Welcome to the world of side-channel attacks (SCAs)—where attackers don’t crack your cryptography; they observe how your hardware executes it.In the rapidly expanding domains of IoT product engineering, smart city infrastructu
Eurth Engineering
Jul 15, 20254 min read


Post-Quantum Cryptography for IoT: ML-KEM, ML-DSA and SLH-DSA
Public-key cryptography protects most device identities, key exchanges and firmware signatures today. It rests on problems (RSA and elliptic curves) that a large, fault-tolerant quantum computer could solve with Shor's algorithm. No such machine exists yet. The reason to act now is the lifetime of IoT hardware: a device shipped today may still be in service in 2040, and traffic recorded today can be stored and decrypted later. On 13 August 2024, NIST published the first three
Srihari Maddula
Dec 25, 20243 min read


White Paper: Preparing Your Business for Quantum-Safe Cryptography in the Era of Quantum Computing
Introduction: The Dawn of a Quantum Revolution Quantum computing has reached a pivotal moment. On December 9, 2024, Google unveiled its “Willow” chip, showcasing unparalleled advancements in error correction and computational power. This milestone brings quantum technology closer to mainstream application, unlocking transformative opportunities in optimization, material science, AI, and smart infrastructure development. However, these advancements also introduce a significant
Srihari Maddula
Dec 14, 20244 min read


What is XDR, EDR, and MDR, and How IT/OT is Getting Ready
In today's rapidly evolving threat landscape, organizations face an increasing number of cyber threats targeting both Information Technology (IT) and Operational Technology (OT) systems. As industries embrace digital transformation and IT/OT convergence, securing critical infrastructure has become more complex and essential than ever. To combat these threats effectively, a new breed of cybersecurity solutions has emerged — Extended Detection and Response (XDR), Endpoint Detec
Srihari Maddula
Sep 28, 20234 min read
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