AI 安全
ASCII Smuggling Shifts from Prompt Injection to Email Attacks as Invisible Unicode Disrupts Classifier Tokenization
Microsoft has uncovered phishing emails that insert invisible Unicode Tag characters into financial keywords, altering the tokens seen by rule-based and machine-learning classifiers. With attacks peaking at more than 2.3 million emails per day, the campaign shows that AI red-teaming techniques are beginning to migrate into conventional cybersecurity offense and defense.