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N-Version Programming and Design-Fault Tolerance in Safety-Critical Actuators
Safety-critical aerospace systems demand reliability far beyond ordinary software engineering standards. In modern fly-by-wire architectures, actuators that drive control surfaces — elevators, ailerons, rudders, flaps, and high-authority maneuvering systems — must function correctly under all circumstances. Hardware redundancy alone cannot guarantee this; design faults in software remain a major threat. This is where N-Version…
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Power and Electromagnetic Side Channels: Data Extraction Across Physical Gaps
1. Beyond Software Boundaries: The Invisible Leakage When people talk about cybersecurity, they usually imagine code vulnerabilities, not physical ones. Yet some of the most insidious data leaks come not from compromised networks but from the subtle energy a device emits as it operates. Power consumption fluctuations and electromagnetic (EM) radiation — normally just…
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Physics vs Code: Why Google’s “Quantum Money” Challenges the Blockchain Paradigm
For the past decade, trust on the internet has been built on code. Cryptocurrencies, blockchains, and zero-knowledge proofs all rely on the hardness of certain mathematical problems. If you can’t solve them, you can’t cheat. But this foundation has a weakness: it assumes computing power grows slowly and predictably. Quantum computing breaks that assumption.…
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Memory Manipulation at the Assembly Level: The Dangerous Art of Reverse Engineering
Manipulating memory at the assembly level is where software stops being abstract and becomes physical — registers, stacks, heaps, and raw bytes. For those who work there, it’s intoxicating: you can watch high-level behavior collapse into a handful of instructions, discover why a crash happens, or understand exactly how a program enforces (or fails…
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Advanced Persistent Threats (APT) on Mobile and Network Systems
Advanced Persistent Threats (APTs) represent the highest tier of targeted cyberattacks: long-term, strategic intrusions executed by highly skilled adversaries, often state-sponsored groups or well-funded criminal organizations. Their goal is simple: remain inside a system for as long as possible while silently gathering intelligence, manipulating assets, or preparing for strategic disruption. Unlike common malware or…