ASCII smuggling crosses over from AI prompt injection to phishing evasion

In this article What is ASCII smuggling? Writing a practical ASCII-smuggling signature What we observed: ASCII smuggling repurposed for phishing What is known and what is new Is there a detection gap? Mitigation and protection guidance References Learn More Microsoft researchers observed a high-volume phishing campaign using invisible Unicode tag characters , a technique popularized in AI prompt injection research as ASCII Smuggling .