Security techniques developed for AI systems do not necessarily stay inside AI systems.
Microsoft reported in September 2026 that ASCII-smuggling techniques associated with prompt-injection research were also being used in phishing evasion.
The broader lesson is that attackers reuse useful ideas.
A technique that hides information from one automated system can sometimes be adapted to confuse another.
For users, this reinforces the importance of verifying links and destinations rather than relying entirely on what a message appears to say.
For security teams, it means AI security and traditional application security increasingly overlap.