TLDR: Emoji smuggling uses Unicode characters to hide malware from security systems, exploiting gaps in text detection, leveraging look-alike characters, emojis as code, invisible characters, and direction trickery. Attackers bypass security filters, making detection difficult. Defenses include input normalization, context-aware security, monitoring, user education, and security design. As AI and LLMs evolve, they face challenges from Unicode attacks, complicating security. Understanding these techniques is crucial for effective defenses against evolving threats.
https://sosintel.co.uk/emoji-smuggling-hiding-malicious-code-in-plain-sight/