Sublime Security

Sublime Security is a cybersecurity company that builds email security software, using machine learning to detect phishing, business email compromise, and malicious messages that traditional filters often miss. Its platform is open to customization, letting security teams write and share detection rules, which makes it relevant to organizations that want more control over how their email defenses are tuned. For governance and compliance leaders, Sublime matters because AI-driven threat detection is increasingly part of the controls regulators and auditors ask about when reviewing how a firm protects customer and employee data.

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ResearchGlobal2026-11-02

Live Invoice Fraud Campaign Hides Commands That Hijack Email AI Agents

Security vendor Sublime Security documented an active invoice fraud campaign embedding hidden instructions inside emails using invisible Unicode characters. The technique targets AI agents that read and act on email, redirecting them to follow attacker commands instead of legitimate user instructions. Enterprises running AI-connected email workflows face immediate prompt injection and financial fraud risk.

prompt injection invoice fraud email agents agentic AI Sublime Security financial controls Unicode obfuscation