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Deep & Emerging Tech·September 5, 2026·1 min read

Microsoft says email spammers are adopting ASCII smuggling, an AI prompt injection tactic used to hide malicious instructions, to evade email platform filters

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Attack techniques born in AI prompt injection are already bleeding into traditional spam—security boundaries between AI and non-AI systems are mostly conceptual, not real. Update your threat models and filters to treat encoded prompt patterns as first-class signals, not niche research curiosities.