christoph/experimental-evaluation-of-webassembly-under-transient-fault-conditions-for-safety-critical-systems
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\chapter{Introduction}\label{ch:introduction}
As semiconductor node sizes shrink, transient hardware faults pose a growing risk to computing systems, especially in environments where reliability is critical.
\Gls{wasm}, a binary-code format developed for the web, is increasingly used in embedded systems through standalone runtimes such as the \Gls{wamr}~\autocite{wamr}.
\Gls{wasm}, a binary code format developed for the web, is increasingly used in embedded systems through standalone runtimes such as the \Gls{wamr}~\autocite{wamr}.
This thesis investigates \Gls{wamr}'s compatibility with hardening techniques for transient hardware faults through systematic single-bit fault injection on a simulated IA-32 CPU using the \Gls{fail} \gls{fi} framework.
The interpreter and \gls{aot} execution modes of \Gls{wamr} are compared under fault conditions and software-based hardening techniques are evaluated at two levels: (I) the language/application level, by hardening source programs before compilation to \Gls{wasm}, and (II) the runtime level, by hardening \Gls{wamr} itself.