Phishing Campaign Sends Millions of Emails Using Invisible Unicode to Evade Filters

Microsoft is alerting of a "high-volume phishing campaign" that's using invisible Unicode tag characters to bypass email filters. "Instead of using these characters to hide instructions from people while exposing them to AI models, the attacker used them to split financial lure words such as...

ASCII smuggling crosses over from AI prompt injection to phishing evasion

In this article 1. What is ASCII smuggling? 2. Writing a practical ASCII-smuggling signature 3. What we observed: ASCII smuggling repurposed for phishing 4. What is known and what is new 5. Is there a detection gap? 6. Mitigation and protection guidance 7. References 8. Learn More Microsoft...

Reverse CAPTCHA: Evaluating LLM Susceptibility to Invisible Unicode Instruction Injection

We introduce Reverse CAPTCHA, an evaluation framework that tests whether large language models follow invisible Unicode-encoded instructions embedded in otherwise normal-looking text. Unlike traditional CAPTCHAs that distinguish humans from machines, our benchmark exploits a capability gap: model...

CVE-2001-1157

Baltimore Technologies WEBsweeper 4.0 and 4.02 does not properly filter Javascript from HTML pages, which could allow remote attackers to bypass the filtering via 1 an extra leading and one or more characters before the SCRIPT tag, or 2 tags using Unicode...

CVE-2001-1157: Undefined Security Weakness

Baltimore Technologies WEBsweeper 4.0 and 4.02 does not properly filter Javascript from HTML pages, which could allow remote attackers to bypass the filtering via 1 an extra leading and one or more characters before the SCRIPT tag, or 2 tags using Unicode...