Post #399908 22 Oct 15, 2026, 14:52 UTC Prompt injection in HTTP headers: what 217M web responses showhttps://www.signalscorps.com/blog/prompt-injection-in-http-headers/ Signals Corps Prompt injection in HTTP headers | Signals Corps Our Common Crawl scan found 7,959 sites sending HTTP headers aimed at AI agents, including 30 injection attempts. See what they say and how to defend agents.